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Conserved domains on  [gi|68303917|gb|AAY89645|]
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SLC3A1 variant D [Homo sapiens]

Protein Classification

alpha-amylase family protein( domain architecture ID 1562432)

alpha-amylase family protein may catalyze the hydrolysis of alpha-(1,4) glycosidic linkages of glycogen, starch, related polysaccharides, and some oligosaccharides

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
AmyAc_family super family cl38930
Alpha amylase catalytic domain family; The Alpha-amylase family comprises the largest family ...
7-200 1.68e-107

Alpha amylase catalytic domain family; The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; and C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost this catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


The actual alignment was detected with superfamily member cd11359:

Pssm-ID: 476817 [Multi-domain]  Cd Length: 456  Bit Score: 320.46  E-value: 1.68e-107
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   7 NSYRFMGTEAYaESIDRTVMYYGLPFIQEADFPFNNYLSML-DTVSGNSVYEVITSWMENMPEGKWPNWMIGGPDSSRLT 85
Cdd:cd11359 260 GRYRFMITEVY-DDIDTTMRYYGTSFKQEADFPFNFYLLDLgANLSGNSINELVESWMSNMPEGKWPNWVLGNHDNSRIA 338
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  86 SRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMGNIVAANLNESY---DINTLRSKSPMQWDNSSNAGFSEASNTWLPTNS 162
Cdd:cd11359 339 SRLGPQYVRAMNMLLLTLPGTPTTYYGEEIGMEDVDISVDKEKDpytFESRDPERTPMQWNNSNNAGFSDANKTWLPVNS 418
                       170       180       190
                ....*....|....*....|....*....|....*...
gi 68303917 163 DYHTVNVDVQKTQPRSALKLYQDLSLLHANELLLNRGW 200
Cdd:cd11359 419 DYKTVNVEVQKTDPTSMLNLYRELLLLRSSELALHRGW 456
 
Name Accession Description Interval E-value
AmyAc_SLC3A1 cd11359
Alpha amylase catalytic domain found in Solute Carrier family 3 member 1 proteins; SLC3A1, ...
7-200 1.68e-107

Alpha amylase catalytic domain found in Solute Carrier family 3 member 1 proteins; SLC3A1, also called Neutral and basic amino acid transport protein rBAT or NBAT, plays a role in amino acid and cystine absorption. Mutations in the gene encoding SLC3A1 causes cystinuria, an autosomal recessive disorder characterized by the failure of proximal tubules to reabsorb filtered cystine and dibasic amino acids. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200494 [Multi-domain]  Cd Length: 456  Bit Score: 320.46  E-value: 1.68e-107
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   7 NSYRFMGTEAYaESIDRTVMYYGLPFIQEADFPFNNYLSML-DTVSGNSVYEVITSWMENMPEGKWPNWMIGGPDSSRLT 85
Cdd:cd11359 260 GRYRFMITEVY-DDIDTTMRYYGTSFKQEADFPFNFYLLDLgANLSGNSINELVESWMSNMPEGKWPNWVLGNHDNSRIA 338
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  86 SRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMGNIVAANLNESY---DINTLRSKSPMQWDNSSNAGFSEASNTWLPTNS 162
Cdd:cd11359 339 SRLGPQYVRAMNMLLLTLPGTPTTYYGEEIGMEDVDISVDKEKDpytFESRDPERTPMQWNNSNNAGFSDANKTWLPVNS 418
                       170       180       190
                ....*....|....*....|....*....|....*...
gi 68303917 163 DYHTVNVDVQKTQPRSALKLYQDLSLLHANELLLNRGW 200
Cdd:cd11359 419 DYKTVNVEVQKTDPTSMLNLYRELLLLRSSELALHRGW 456
AmyA COG0366
Glycosidase/amylase (phosphorylase) [Carbohydrate transport and metabolism];
15-186 3.54e-35

Glycosidase/amylase (phosphorylase) [Carbohydrate transport and metabolism];


Pssm-ID: 440135 [Multi-domain]  Cd Length: 413  Bit Score: 131.52  E-value: 3.54e-35
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  15 EAYAESIDRTVMYYGLPFIQEA-DFPFNNYLSM-LDTVSGNSVYEVITSWMENMPEGKWPNWMIGGPDSSRLTSRLGNQY 92
Cdd:COG0366 240 EAWVDPPEDVARYFGGDELDMAfNFPLMPALWDaLAPEDAAELRDALAQTPALYPEGGWWANFLRNHDQPRLASRLGGDY 319
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  93 ----VNVMNMLLFTLPGTPITYYGEEIGMGNivaANLNESYDINTLRskSPMQWDNSSNAGFSEAsntWLPTNSDYHTVN 168
Cdd:COG0366 320 drrrAKLAAALLLTLPGTPYIYYGDEIGMTG---DKLQDPEGRDGCR--TPMPWSDDRNAGFSTG---WLPVPPNYKAIN 391
                       170
                ....*....|....*...
gi 68303917 169 VDVQKTQPRSALKLYQDL 186
Cdd:COG0366 392 VEAQEADPDSLLNFYRKL 409
PRK10933 PRK10933
trehalose-6-phosphate hydrolase; Provisional
62-229 1.79e-15

trehalose-6-phosphate hydrolase; Provisional


Pssm-ID: 182849 [Multi-domain]  Cd Length: 551  Bit Score: 76.71  E-value: 1.79e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   62 WMENMPEGKWPNWMIGGPDSSRLTSRLGN------QYVNVMNMLLFTLPGTPITYYGEEIGMGNIVAANLNESYDINTLR 135
Cdd:PRK10933 307 WQQGMHNVAWNALFWCNHDQPRIVSRFGDegeyrvPAAKMLAMVLHGMQGTPYIYQGEEIGMTNPHFTRITDYRDVESLN 386
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  136 --------------------SKS------PMQWDNSSNAGFSEASnTWLPTNSDYHTVNVDVQKTQPRSALKLYQDLSLL 189
Cdd:PRK10933 387 mfaelrndgrdadellailaSKSrdnsrtPMQWDNGDNAGFTQGE-PWIGLCDNYQEINVEAALADEDSVFYTYQKLIAL 465
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|.
gi 68303917  190 HANELLLNRGWFCHLRNDSHYV-VYTRELDGidRIFIVVLN 229
Cdd:PRK10933 466 RKQEPVLTWGDYQDLLPNHPSLwCYRREWQG--QTLLVIAN 504
Alpha-amylase pfam00128
Alpha amylase, catalytic domain; Alpha amylase is classified as family 13 of the glycosyl ...
56-119 7.96e-12

Alpha amylase, catalytic domain; Alpha amylase is classified as family 13 of the glycosyl hydrolases. The structure is an 8 stranded alpha/beta barrel containing the active site, interrupted by a ~70 a.a. calcium-binding domain protruding between beta strand 3 and alpha helix 3, and a carboxyl-terminal Greek key beta-barrel domain.


Pssm-ID: 395077 [Multi-domain]  Cd Length: 334  Bit Score: 65.07  E-value: 7.96e-12
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 68303917    56 YEVITSWMENMPE-GKWPNWMIGGPDSSRLTSRLGNQ--YVNVMNMLLFTLPGTPITYYGEEIGMGN 119
Cdd:pfam00128 264 KEMITDWLDALPDtNGWNFTFLGNHDQPRFLSRFGDDraSAKLLAVFLLTLRGTPYIYQGEEIGMTG 330
 
Name Accession Description Interval E-value
AmyAc_SLC3A1 cd11359
Alpha amylase catalytic domain found in Solute Carrier family 3 member 1 proteins; SLC3A1, ...
7-200 1.68e-107

Alpha amylase catalytic domain found in Solute Carrier family 3 member 1 proteins; SLC3A1, also called Neutral and basic amino acid transport protein rBAT or NBAT, plays a role in amino acid and cystine absorption. Mutations in the gene encoding SLC3A1 causes cystinuria, an autosomal recessive disorder characterized by the failure of proximal tubules to reabsorb filtered cystine and dibasic amino acids. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200494 [Multi-domain]  Cd Length: 456  Bit Score: 320.46  E-value: 1.68e-107
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   7 NSYRFMGTEAYaESIDRTVMYYGLPFIQEADFPFNNYLSML-DTVSGNSVYEVITSWMENMPEGKWPNWMIGGPDSSRLT 85
Cdd:cd11359 260 GRYRFMITEVY-DDIDTTMRYYGTSFKQEADFPFNFYLLDLgANLSGNSINELVESWMSNMPEGKWPNWVLGNHDNSRIA 338
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  86 SRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMGNIVAANLNESY---DINTLRSKSPMQWDNSSNAGFSEASNTWLPTNS 162
Cdd:cd11359 339 SRLGPQYVRAMNMLLLTLPGTPTTYYGEEIGMEDVDISVDKEKDpytFESRDPERTPMQWNNSNNAGFSDANKTWLPVNS 418
                       170       180       190
                ....*....|....*....|....*....|....*...
gi 68303917 163 DYHTVNVDVQKTQPRSALKLYQDLSLLHANELLLNRGW 200
Cdd:cd11359 419 DYKTVNVEVQKTDPTSMLNLYRELLLLRSSELALHRGW 456
AmyAc_maltase cd11328
Alpha amylase catalytic domain found in maltase (also known as alpha glucosidase) and related ...
10-199 1.08e-63

Alpha amylase catalytic domain found in maltase (also known as alpha glucosidase) and related proteins; Maltase (EC 3.2.1.20) hydrolyzes the terminal, non-reducing (1->4)-linked alpha-D-glucose residues in maltose, releasing alpha-D-glucose. In most cases, maltase is equivalent to alpha-glucosidase, but the term "maltase" emphasizes the disaccharide nature of the substrate from which glucose is cleaved, and the term "alpha-glucosidase" emphasizes the bond, whether the substrate is a disaccharide or polysaccharide. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200467 [Multi-domain]  Cd Length: 470  Bit Score: 208.24  E-value: 1.08e-63
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  10 RFMGTEAYAeSIDRTVMYYGLPFIQEADFPFNNYLsmLDTVSGNS----VYEVITSWMENMPEGKWPNWMIGGPDSSRLT 85
Cdd:cd11328 266 RVMMTEAYS-SLDNTMKYYGNETTYGAHFPFNFEL--ITNLNKNSnatdFKDLIDKWLDNMPEGQTANWVLGNHDNPRVA 342
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  86 SRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMGN--------IVAANLNESYDINTLRS----KSPMQWDNSSNAGFSEA 153
Cdd:cd11328 343 SRFGEERVDGMNMLSMLLPGVAVTYYGEEIGMEDttiswedtVDPPACNAGPENYEAYSrdpaRTPFQWDDSKNAGFSTA 422
                       170       180       190       200
                ....*....|....*....|....*....|....*....|....*.
gi 68303917 154 SNTWLPTNSDYHTVNVDVQKTQPRSALKLYQDLSLLHANELLLNRG 199
Cdd:cd11328 423 NKTWLPVNPNYKTLNLEAQKKDPRSHYNIYKKLAQLRKSPTFLRGD 468
AmyAc_OligoGlu_like cd11331
Alpha amylase catalytic domain found in oligo-1,6-glucosidase (also called isomaltase; ...
5-199 2.60e-39

Alpha amylase catalytic domain found in oligo-1,6-glucosidase (also called isomaltase; sucrase-isomaltase; alpha-limit dextrinase) and related proteins; Oligo-1,6-glucosidase (EC 3.2.1.10) hydrolyzes the alpha-1,6-glucosidic linkage of isomalto-oligosaccharides, pannose, and dextran. Unlike alpha-1,4-glucosidases (EC 3.2.1.20), it fails to hydrolyze the alpha-1,4-glucosidic bonds of maltosaccharides. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200470 [Multi-domain]  Cd Length: 450  Bit Score: 143.62  E-value: 2.60e-39
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   5 LVNSY--RFMGTEAYAeSIDRTVMYYGLPFiQEADFPFNNYLSMLDTvSGNSVYEVITSWMENMPEGKWPNWMIGGPDSS 82
Cdd:cd11331 248 VVDEFgdRVLIGEIYL-PLDRLVAYYGAGR-DGLHLPFNFHLISLPW-DAAALARAIEEYEAALPAGAWPNWVLGNHDQP 324
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  83 RLTSRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMGNIV---------AANLNESYDINTLRSKSPMQWDNSSNAGFSEA 153
Cdd:cd11331 325 RIASRVGPAQARVAAMLLLTLRGTPTLYYGDELGMEDVPippervqdpAELNQPGGGLGRDPERTPMPWDASPNAGFSAA 404
                       170       180       190       200
                ....*....|....*....|....*....|....*....|....*.
gi 68303917 154 sNTWLPTNSDYHTVNVDVQKTQPRSALKLYQDLSLLHANELLLNRG 199
Cdd:cd11331 405 -DPWLPLSPDARQRNVATQEADPGSMLSLYRRLLALRRAHPALSAG 449
AmyA COG0366
Glycosidase/amylase (phosphorylase) [Carbohydrate transport and metabolism];
15-186 3.54e-35

Glycosidase/amylase (phosphorylase) [Carbohydrate transport and metabolism];


Pssm-ID: 440135 [Multi-domain]  Cd Length: 413  Bit Score: 131.52  E-value: 3.54e-35
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  15 EAYAESIDRTVMYYGLPFIQEA-DFPFNNYLSM-LDTVSGNSVYEVITSWMENMPEGKWPNWMIGGPDSSRLTSRLGNQY 92
Cdd:COG0366 240 EAWVDPPEDVARYFGGDELDMAfNFPLMPALWDaLAPEDAAELRDALAQTPALYPEGGWWANFLRNHDQPRLASRLGGDY 319
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  93 ----VNVMNMLLFTLPGTPITYYGEEIGMGNivaANLNESYDINTLRskSPMQWDNSSNAGFSEAsntWLPTNSDYHTVN 168
Cdd:COG0366 320 drrrAKLAAALLLTLPGTPYIYYGDEIGMTG---DKLQDPEGRDGCR--TPMPWSDDRNAGFSTG---WLPVPPNYKAIN 391
                       170
                ....*....|....*...
gi 68303917 169 VDVQKTQPRSALKLYQDL 186
Cdd:COG0366 392 VEAQEADPDSLLNFYRKL 409
AmyAc_SI_OligoGlu_DGase cd11333
Alpha amylase catalytic domain found in Sucrose isomerases, oligo-1,6-glucosidase (also called ...
15-186 4.64e-29

Alpha amylase catalytic domain found in Sucrose isomerases, oligo-1,6-glucosidase (also called isomaltase; sucrase-isomaltase; alpha-limit dextrinase), dextran glucosidase (also called glucan 1,6-alpha-glucosidase), and related proteins; The sucrose isomerases (SIs) Isomaltulose synthase (EC 5.4.99.11) and Trehalose synthase (EC 5.4.99.16) catalyze the isomerization of sucrose and maltose to produce isomaltulose and trehalulose, respectively. Oligo-1,6-glucosidase (EC 3.2.1.10) hydrolyzes the alpha-1,6-glucosidic linkage of isomaltooligosaccharides, pannose, and dextran. Unlike alpha-1,4-glucosidases (EC 3.2.1.20), it fails to hydrolyze the alpha-1,4-glucosidic bonds of maltosaccharides. Dextran glucosidase (DGase, EC 3.2.1.70) hydrolyzes alpha-1,6-glucosidic linkages at the non-reducing end of panose, isomaltooligosaccharides and dextran to produce alpha-glucose.The common reaction chemistry of the alpha-amylase family enzymes is based on a two-step acid catalytic mechanism that requires two critical carboxylates: one acting as a general acid/base (Glu) and the other as a nucleophile (Asp). Both hydrolysis and transglycosylation proceed via the nucleophilic substitution reaction between the anomeric carbon, C1 and a nucleophile. Both enzymes contain the three catalytic residues (Asp, Glu and Asp) common to the alpha-amylase family as well as two histidine residues which are predicted to be critical to binding the glucose residue adjacent to the scissile bond in the substrates. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200472 [Multi-domain]  Cd Length: 428  Bit Score: 115.25  E-value: 4.64e-29
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  15 EAYAESIDRTVMYYGlpfiqeadfPFNNYLSM--------LDTVSGNSVY----------EVITSWMENMPEGKWPNWMI 76
Cdd:cd11333 249 EAPGVDPEEALKYVG---------PDRGELSMvfnfehldLDYGPGGKWKpkpwdleelkKILSKWQKALQGDGWNALFL 319
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  77 GGPDSSRLTSRLGNQYVN------VMNMLLFTLPGTPITYYGEEIGMGNivaanlneSYDintlRSKSPMQWDNSSNAGF 150
Cdd:cd11333 320 ENHDQPRSVSRFGNDGEYrvesakMLATLLLTLRGTPFIYQGEEIGMTN--------SRD----NARTPMQWDDSPNAGF 387
                       170       180       190
                ....*....|....*....|....*....|....*.
gi 68303917 151 SEaSNTWLPTNSDYHTVNVDVQKTQPRSALKLYQDL 186
Cdd:cd11333 388 ST-GKPWLPVNPNYKEINVEAQLADPDSVLNFYKKL 422
AmyAc_TreS cd11334
Alpha amylase catalytic domain found in Trehalose synthetase; Trehalose synthetase (TreS) ...
83-180 1.27e-20

Alpha amylase catalytic domain found in Trehalose synthetase; Trehalose synthetase (TreS) catalyzes the reversible interconversion of trehalose and maltose. The enzyme catalyzes the reaction in both directions, but the preferred substrate is maltose. Glucose is formed as a by-product of this reaction. It is believed that the catalytic mechanism may involve the cutting of the incoming disaccharide and transfer of a glucose to an enzyme-bound glucose. This enzyme also catalyzes production of a glucosamine disaccharide from maltose and glucosamine. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200473 [Multi-domain]  Cd Length: 447  Bit Score: 91.47  E-value: 1.27e-20
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  83 RLTSRLGNQY--VNVMNMLLFTLPGTPITYYGEEIGMG-NIvaaNLNESYDINTlrsksPMQWDNSSNAGFSEAS--NTW 157
Cdd:cd11334 339 RLAPMLGGDRrrIELAYSLLFSLPGTPVIYYGDEIGMGdNL---YLPDRDGVRT-----PMQWSADRNGGFSTADpqKLY 410
                        90       100
                ....*....|....*....|....*..
gi 68303917 158 LPTNSD----YHTVNVDVQKTQPRSAL 180
Cdd:cd11334 411 LPVIDDgpygYERVNVEAQRRDPSSLL 437
AmyAc_2 cd11348
Alpha amylase catalytic domain found in an uncharacterized protein family; The Alpha-amylase ...
80-186 1.26e-18

Alpha amylase catalytic domain found in an uncharacterized protein family; The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The catalytic triad (DED) is not present here. The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200486 [Multi-domain]  Cd Length: 429  Bit Score: 85.82  E-value: 1.26e-18
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  80 DSSRLTSRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMGNIVAANLNE-SYdiNTLRSKSPMQWDNSSNAGFS--EASNT 156
Cdd:cd11348 319 DTPRLNARLTEEELKLAFAFLLTMPGVPFIYYGDEIGMRYIEGLPSKEgGY--NRTGSRTPMQWDSGKNAGFStaPAERL 396
                        90       100       110
                ....*....|....*....|....*....|
gi 68303917 157 WLPTNSDYHTVNVDVQKTQPRSALKLYQDL 186
Cdd:cd11348 397 YLPVDPAPDRPTVAAQEDDPNSLLNFVRDL 426
AmyAc_bac2_AmyA cd11316
Alpha amylase catalytic domain found in bacterial Alpha-amylases (also called 1, ...
80-199 4.63e-16

Alpha amylase catalytic domain found in bacterial Alpha-amylases (also called 1,4-alpha-D-glucan-4-glucanohydrolase); AmyA (EC 3.2.1.1) catalyzes the hydrolysis of alpha-(1,4) glycosidic linkages of glycogen, starch, related polysaccharides, and some oligosaccharides. This group includes Chloroflexi, Dictyoglomi, and Fusobacteria. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200455 [Multi-domain]  Cd Length: 403  Bit Score: 78.01  E-value: 4.63e-16
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  80 DSSRLTSRLGNQyVNVMNM---LLFTLPGTPITYYGEEIGMgnivaanLNESYDINtLRskSPMQWDNSSNAGFSeasnT 156
Cdd:cd11316 294 DQDRVASQLGGD-EAKAKLaaaLLLTLPGNPFIYYGEEIGM-------LGSKPDEN-IR--TPMSWDADSGAGFT----T 358
                        90       100       110       120
                ....*....|....*....|....*....|....*....|....*
gi 68303917 157 WLPT--NSDYHTVNVDVQKTQPRSALKLYQDLSLLHANELLLNRG 199
Cdd:cd11316 359 WIPPrpNTNATTASVEAQEADPDSLLNHYKRLIALRNEYPALARG 403
PRK10933 PRK10933
trehalose-6-phosphate hydrolase; Provisional
62-229 1.79e-15

trehalose-6-phosphate hydrolase; Provisional


Pssm-ID: 182849 [Multi-domain]  Cd Length: 551  Bit Score: 76.71  E-value: 1.79e-15
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   62 WMENMPEGKWPNWMIGGPDSSRLTSRLGN------QYVNVMNMLLFTLPGTPITYYGEEIGMGNIVAANLNESYDINTLR 135
Cdd:PRK10933 307 WQQGMHNVAWNALFWCNHDQPRIVSRFGDegeyrvPAAKMLAMVLHGMQGTPYIYQGEEIGMTNPHFTRITDYRDVESLN 386
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  136 --------------------SKS------PMQWDNSSNAGFSEASnTWLPTNSDYHTVNVDVQKTQPRSALKLYQDLSLL 189
Cdd:PRK10933 387 mfaelrndgrdadellailaSKSrdnsrtPMQWDNGDNAGFTQGE-PWIGLCDNYQEINVEAALADEDSVFYTYQKLIAL 465
                        170       180       190       200
                 ....*....|....*....|....*....|....*....|.
gi 68303917  190 HANELLLNRGWFCHLRNDSHYV-VYTRELDGidRIFIVVLN 229
Cdd:PRK10933 466 RKQEPVLTWGDYQDLLPNHPSLwCYRREWQG--QTLLVIAN 504
AmyAc_OligoGlu cd11330
Alpha amylase catalytic domain found in oligo-1,6-glucosidase (also called isomaltase; ...
41-186 4.48e-14

Alpha amylase catalytic domain found in oligo-1,6-glucosidase (also called isomaltase; sucrase-isomaltase; alpha-limit dextrinase) and related proteins; Oligo-1,6-glucosidase (EC 3.2.1.10) hydrolyzes the alpha-1,6-glucosidic linkage of isomalto-oligosaccharides, pannose, and dextran. Unlike alpha-1,4-glucosidases (EC 3.2.1.20), it fails to hydrolyze the alpha-1,4-glucosidic bonds of maltosaccharides. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200469 [Multi-domain]  Cd Length: 472  Bit Score: 72.29  E-value: 4.48e-14
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  41 NNYLSMLDTVSGNSVYEVITSWMENMPEGkWPNWMIGGPDSSRLTSRLGN-----QYVNVMNMLLFTLPGTPITYYGEEI 115
Cdd:cd11330 289 YSFDLLGRPFSAAVVRDALEAFEAEAPDG-WPCWAFSNHDVPRAVSRWAGgaddpALARLLLALLLSLRGSVCLYQGEEL 367
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917 116 GM--GNIVAANLNESYDINTL-----R--SKSPMQWD-NSSNAGFSEASnTWLPTNSDYHTVNVDVQKTQPRSALKLYQD 185
Cdd:cd11330 368 GLpeAELPFEELQDPYGITFWpefkgRdgCRTPMPWQaDAPHAGFSTAK-PWLPVPPEHLALAVDVQEKDPGSVLNFYRR 446

                .
gi 68303917 186 L 186
Cdd:cd11330 447 F 447
AmyAc_SLC3A2 cd11345
Alpha amylase catalytic domain found in solute carrier family 3 member 2 proteins; 4F2 ...
68-193 6.13e-13

Alpha amylase catalytic domain found in solute carrier family 3 member 2 proteins; 4F2 cell-surface antigen heavy chain (hc) is a protein that in humans is encoded by the SLC3A2 gene. 4F2hc is a multifunctional type II membrane glycoprotein involved in amino acid transport and cell fusion, adhesion, and transformation. It is related to bacterial alpha-glycosidases, but lacks alpha-glycosidase activity. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200483 [Multi-domain]  Cd Length: 326  Bit Score: 68.24  E-value: 6.13e-13
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  68 EGKWPNWMIGGPDSSRLTSRLGNQYVNVMNMLLFTLPGTPITYYGEEIGMgnivAANLNESydintlrskSPMQWDNSSn 147
Cdd:cd11345 221 GQRSLAWGIGARQGGHLASLVPAALVRLYQLLLFTLPGTPVFNYGDEIGL----QDAQGKS---------PKMLRPNNE- 286
                        90       100       110       120
                ....*....|....*....|....*....|....*....|....*.
gi 68303917 148 AGFSEASNTwlptnsdyhTVNVDVQKTQPRSALKLYQDLSLLHANE 193
Cdd:cd11345 287 PEIAEEVNA---------NMTAKAQKEDRGSLRSFFRSLSDLRGKE 323
Alpha-amylase pfam00128
Alpha amylase, catalytic domain; Alpha amylase is classified as family 13 of the glycosyl ...
56-119 7.96e-12

Alpha amylase, catalytic domain; Alpha amylase is classified as family 13 of the glycosyl hydrolases. The structure is an 8 stranded alpha/beta barrel containing the active site, interrupted by a ~70 a.a. calcium-binding domain protruding between beta strand 3 and alpha helix 3, and a carboxyl-terminal Greek key beta-barrel domain.


Pssm-ID: 395077 [Multi-domain]  Cd Length: 334  Bit Score: 65.07  E-value: 7.96e-12
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 68303917    56 YEVITSWMENMPE-GKWPNWMIGGPDSSRLTSRLGNQ--YVNVMNMLLFTLPGTPITYYGEEIGMGN 119
Cdd:pfam00128 264 KEMITDWLDALPDtNGWNFTFLGNHDQPRFLSRFGDDraSAKLLAVFLLTLRGTPYIYQGEEIGMTG 330
AmyAc_OligoGlu_TS cd11332
Alpha amylase catalytic domain found in oligo-1,6-glucosidase (also called isomaltase; ...
69-200 2.13e-06

Alpha amylase catalytic domain found in oligo-1,6-glucosidase (also called isomaltase; sucrase-isomaltase; alpha-limit dextrinase), trehalose synthase (also called maltose alpha-D-glucosyltransferase), and related proteins; Oligo-1,6-glucosidase (EC 3.2.1.10) hydrolyzes the alpha-1,6-glucosidic linkage of isomaltooligosaccharides, pannose, and dextran. Unlike alpha-1,4-glucosidases (EC 3.2.1.20), it fails to hydrolyze the alpha-1,4-glucosidic bonds of maltosaccharides. Trehalose synthase (EC 5.4.99.16) catalyzes the isomerization of maltose to produce trehalulose. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200471 [Multi-domain]  Cd Length: 481  Bit Score: 48.81  E-value: 2.13e-06
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  69 GKWPNWMIGGPDSSRLTSRLG--------------NQYVNV---------MNMLLFTLPGTPITYYGEEIGMGNIVAANL 125
Cdd:cd11332 314 GAPPTWVLSNHDVVRHVSRYGlptpgpdpsgidgtDEPPDLalglrraraAALLMLALPGSAYLYQGEELGLPEVEDLPD 393
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917 126 NESYDINTLRSKS----------PMQWdnSSNA---GFS-EASNTWLPTNSDYHTVNVDVQKTQPRSALKLYQD-LSLLH 190
Cdd:cd11332 394 ALRQDPIWERSGGtergrdgcrvPLPW--SGDAppfGFSpGGAEPWLPQPAWWARYAVDAQEADPGSTLSLYRRaLRLRR 471
                       170
                ....*....|
gi 68303917 191 ANELLLNRGW 200
Cdd:cd11332 472 ELPAGGGGLV 481
AmyAc_CMD cd11338
Alpha amylase catalytic domain found in cyclomaltodextrinases and related proteins; ...
80-117 2.53e-05

Alpha amylase catalytic domain found in cyclomaltodextrinases and related proteins; Cyclomaltodextrinase (CDase; EC3.2.1.54), neopullulanase (NPase; EC 3.2.1.135), and maltogenic amylase (MA; EC 3.2.1.133) catalyze the hydrolysis of alpha-(1,4) glycosidic linkages on a number of substrates including cyclomaltodextrins (CDs), pullulan, and starch. These enzymes hydrolyze CDs and starch to maltose and pullulan to panose by cleavage of alpha-1,4 glycosidic bonds whereas alpha-amylases essentially lack activity on CDs and pullulan. They also catalyze transglycosylation of oligosaccharides to the C3-, C4- or C6-hydroxyl groups of various acceptor sugar molecules. Since these proteins are nearly indistinguishable from each other, they are referred to as cyclomaltodextrinases (CMDs). The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200477 [Multi-domain]  Cd Length: 389  Bit Score: 45.55  E-value: 2.53e-05
                        10        20        30        40
                ....*....|....*....|....*....|....*....|
gi 68303917  80 DSSRLTSRLGNQY--VNVMNMLLFTLPGTPITYYGEEIGM 117
Cdd:cd11338 305 DTPRILTLLGGDKarLKLALALQFTLPGAPCIYYGDEIGL 344
AmyAc_bac_CMD_like cd11354
Alpha amylase catalytic domain found in bacterial cyclomaltodextrinases and related proteins; ...
72-116 4.21e-05

Alpha amylase catalytic domain found in bacterial cyclomaltodextrinases and related proteins; Cyclomaltodextrinase (CDase; EC3.2.1.54), neopullulanase (NPase; EC 3.2.1.135), and maltogenic amylase (MA; EC 3.2.1.133) catalyze the hydrolysis of alpha-(1,4) glycosidic linkages on a number of substrates including cyclomaltodextrins (CDs), pullulan, and starch. These enzymes hydrolyze CDs and starch to maltose and pullulan to panose by cleavage of alpha-1,4 glycosidic bonds whereas alpha-amylases essentially lack activity on CDs and pullulan. They also catalyze transglycosylation of oligosaccharides to the C3-, C4- or C6-hydroxyl groups of various acceptor sugar molecules. Since these proteins are nearly indistinguishable from each other, they are referred to as cyclomaltodextrinases (CMDs). This group of CMDs is bacterial. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200491 [Multi-domain]  Cd Length: 357  Bit Score: 44.63  E-value: 4.21e-05
                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*
gi 68303917  72 PNWMIGGPDSSRLTSRLGNQYVNVMNMLLFTLPGTPITYYGEEIG 116
Cdd:cd11354 258 PQTFVGNHDVTRIASQVGDDGAALAAAVLFTVPGIPSIYYGDEQG 302
AmyAc_maltase-like cd11329
Alpha amylase catalytic domain family found in maltase; Maltase (EC 3.2.1.20) hydrolyzes the ...
18-139 5.66e-05

Alpha amylase catalytic domain family found in maltase; Maltase (EC 3.2.1.20) hydrolyzes the terminal, non-reducing (1->4)-linked alpha-D-glucose residues in maltose, releasing alpha-D-glucose. The catalytic triad (DED) which is highly conserved in the other maltase group is not present in this subfamily. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200468 [Multi-domain]  Cd Length: 477  Bit Score: 44.29  E-value: 5.66e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  18 AESIDR-TVMYYGLPFIQEADFPFN-NYLSMLD-TVSGNSVYEVITSWMENMPEGKWPNWMIGGPDSSRltsrlgnQYVN 94
Cdd:cd11329 298 AEDIIRpDVYQVNGTLDLLIDLPLYgNFLAKLSkAITANALHKILASISTVSATTSWPQWNLRYRDTKV-------VASD 370
                        90       100       110       120
                ....*....|....*....|....*....|....*....|....*
gi 68303917  95 VMNMLLFTLPGTPITYYGEEIGMgnivaanlNESYDINTLRSKSP 139
Cdd:cd11329 371 ALTLFTSLLPGTPVVPLDSELYA--------NVSKPTISTLEKFR 407
AmyAc_CMD_like cd11337
Alpha amylase catalytic domain found in cyclomaltodextrinases and related proteins; ...
69-116 1.27e-03

Alpha amylase catalytic domain found in cyclomaltodextrinases and related proteins; Cyclomaltodextrinase (CDase; EC3.2.1.54), neopullulanase (NPase; EC 3.2.1.135), and maltogenic amylase (MA; EC 3.2.1.133) catalyze the hydrolysis of alpha-(1,4) glycosidic linkages on a number of substrates including cyclomaltodextrins (CDs), pullulan, and starch. These enzymes hydrolyze CDs and starch to maltose and pullulan to panose by cleavage of alpha-1,4 glycosidic bonds whereas alpha-amylases essentially lack activity on CDs and pullulan. They also catalyze transglycosylation of oligosaccharides to the C3-, C4- or C6-hydroxyl groups of various acceptor sugar molecules. Since these proteins are nearly indistinguishable from each other, they are referred to as cyclomaltodextrinases (CMDs). This group of CMDs is mainly bacterial. The Alpha-amylase family comprises the largest family of glycoside hydrolases (GH), with the majority of enzymes acting on starch, glycogen, and related oligo- and polysaccharides. These proteins catalyze the transformation of alpha-1,4 and alpha-1,6 glucosidic linkages with retention of the anomeric center. The protein is described as having 3 domains: A, B, C. A is a (beta/alpha) 8-barrel; B is a loop between the beta 3 strand and alpha 3 helix of A; C is the C-terminal extension characterized by a Greek key. The majority of the enzymes have an active site cleft found between domains A and B where a triad of catalytic residues (Asp, Glu and Asp) performs catalysis. Other members of this family have lost the catalytic activity as in the case of the human 4F2hc, or only have 2 residues that serve as the catalytic nucleophile and the acid/base, such as Thermus A4 beta-galactosidase with 2 Glu residues (GH42) and human alpha-galactosidase with 2 Asp residues (GH31). The family members are quite extensive and include: alpha amylase, maltosyltransferase, cyclodextrin glycotransferase, maltogenic amylase, neopullulanase, isoamylase, 1,4-alpha-D-glucan maltotetrahydrolase, 4-alpha-glucotransferase, oligo-1,6-glucosidase, amylosucrase, sucrose phosphorylase, and amylomaltase.


Pssm-ID: 200476 [Multi-domain]  Cd Length: 328  Bit Score: 39.81  E-value: 1.27e-03
                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 68303917  69 GKWPNWMIGGPDSSRLTSRLGNQ-YVNVMNMLLFTLPGTPITYYGEEIG 116
Cdd:cd11337 228 GFHLYTFVDNHDVTRIASILGDKaHLPLAYALLFTMPGIPSIYYGSEWG 276
PRK10785 PRK10785
maltodextrin glucosidase; Provisional
80-238 2.16e-03

maltodextrin glucosidase; Provisional


Pssm-ID: 236759 [Multi-domain]  Cd Length: 598  Bit Score: 39.61  E-value: 2.16e-03
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917   80 DSSRLTSRLGNQyVNVMNM---LLFTLPGTPITYYGEEIGM-GNivaanlNESYdintlrSKSPMQWDnssnagfseasn 155
Cdd:PRK10785 447 DTARFKTLLGGD-KARMPLalvWLFTWPGVPCIYYGDEVGLdGG------NDPF------CRKPFPWD------------ 501
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 68303917  156 twlPTNSDYHTvnvdvqktqprsaLKLYQDLSLLHANELLLNRGWFCHLRNDSHYVVYTRELdGIDRIfIVVLNFGESTL 235
Cdd:PRK10785 502 ---EAKQDGAL-------------LALYQRMIALRKKSQALRRGGCQVLYAEGNVVVFARVL-QQQRV-LVAINRGEACE 563

                 ...
gi 68303917  236 LNL 238
Cdd:PRK10785 564 VVL 566
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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