NCBI Home Page NCBI Site Search page NCBI Guide that lists and describes the NCBI resources
Conserved domains on  [gi|13878717|sp|O70338|]
View 

RecName: Full=Ribonuclease H1; Short=RNase H1

Protein Classification

ribonuclease H family protein( domain architecture ID 10483817)

ribonuclease H (RNaseH) family protein containing a reverse transcriptase (RT)-like domain; may be an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner

EC:  3.1.26.4
Gene Ontology:  GO:0003723|GO:0004523

Graphical summary

 Zoom to residue level

show extra options »

Show site features     Horizontal zoom: ×

List of domain hits

 Name Accession Description Interval E-value
RNase_HI_eukaryote_like cd09280
Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic ...
 140-281 1.34e-82

Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic counterparts; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. Eukaryotic RNase H is longer and more complex than in prokaryotes. Almost all eukaryotic RNase HI have highly conserved regions at their N-termini called hybrid binding domain (HBD). It is speculated that the HBD contributes to binding the RNA/DNA hybrid. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability, but RNase H is essential in higher eukaryotes. RNase H knockout mice lack mitochondrial DNA replication and die as embryos.


:

Pssm-ID: 260012 [Multi-domain]  Cd Length: 145  Bit Score: 244.78  E-value: 1.34e-82
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 140 IVYTDGCCSSNGRKRARAGIGVYWGPGHPLNVGIRLPGR-QTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTINGIT 218
Cdd:cd09280   1 VVYTDGSCLNNGKPGARAGIGVYFGPGDPRNVSEPLPGRkQTNNRAELLAVIHALEQAPEEGIRKLEIRTDSKYAINCIT 80

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 13878717 219 NWVQGWKKNGWRTSTGKDVINKEDFMELDELTQ--GMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:cd09280  81 KWIPKWKKNGWKTSKGKPVKNQDLIKELDKLLRkrGIKVKFEHVKGHSGDPGNEEADRLAREGAD 145
Cauli_VI pfam01693
Caulimovirus viroplasmin; This family consists of various caulimovirus viroplasmin proteins. ...
 28-70 2.04e-20

Caulimovirus viroplasmin; This family consists of various caulimovirus viroplasmin proteins. The viroplasmin protein is encoded by gene VI and is the main component of viral inclusion bodies or viroplasms. Inclusions are the site of viral assembly, DNA synthesis and accumulation. Two domains exist within gene VI corresponding approximately to the 5' third and middle third of gene VI, these influence systemic infection in a light-dependent manner.


:

Pssm-ID: 460297 [Multi-domain]  Cd Length: 44  Bit Score: 82.07  E-value: 2.04e-20
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 13878717    28 FYAVRRGRRTGVFLSWSECKAQVDRFPAARFKKFATEDEAWAF 70
Cdd:pfam01693   2 YYAVAKGRKPGIYTTWDECKAQVKGFPGAKYKSFKTREEAEAF 44
 
Name Accession Description Interval E-value
RNase_HI_eukaryote_like cd09280
Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic ...
 140-281 1.34e-82

Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic counterparts; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. Eukaryotic RNase H is longer and more complex than in prokaryotes. Almost all eukaryotic RNase HI have highly conserved regions at their N-termini called hybrid binding domain (HBD). It is speculated that the HBD contributes to binding the RNA/DNA hybrid. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability, but RNase H is essential in higher eukaryotes. RNase H knockout mice lack mitochondrial DNA replication and die as embryos.


Pssm-ID: 260012 [Multi-domain]  Cd Length: 145  Bit Score: 244.78  E-value: 1.34e-82
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 140 IVYTDGCCSSNGRKRARAGIGVYWGPGHPLNVGIRLPGR-QTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTINGIT 218
Cdd:cd09280   1 VVYTDGSCLNNGKPGARAGIGVYFGPGDPRNVSEPLPGRkQTNNRAELLAVIHALEQAPEEGIRKLEIRTDSKYAINCIT 80

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 13878717 219 NWVQGWKKNGWRTSTGKDVINKEDFMELDELTQ--GMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:cd09280  81 KWIPKWKKNGWKTSKGKPVKNQDLIKELDKLLRkrGIKVKFEHVKGHSGDPGNEEADRLAREGAD 145
RNase_H pfam00075
RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral ...
 137-281 4.47e-62

RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral replication cycle, and often found as a domain associated with reverse transcriptases. Structure is a mixed alpha+beta fold with three a/b/a layers.


Pssm-ID: 395028 [Multi-domain]  Cd Length: 141  Bit Score: 192.59  E-value: 4.47e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717   137 ESVIVYTDGCCSSNgRKRARAGIGVYwgPGHPlNVGIRLPGRQTNQRAEIHAACKAIMQAKAQniSKLVLYTDSMFTING 216
Cdd:pfam00075   2 KAVTVYTDGSCLGN-PGPGGAGAVLY--RGHE-NISAPLPGRTTNNRAELQAVIEALKALKSP--SKVNIYTDSQYVIGG 75

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 13878717   217 ITNWVQGWKKNGWR-TSTGKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:pfam00075  76 ITQWVHGWKKNGWPtTSEGKPVKNKDLWQLLKALCKKHQVYWQWVKGHAGNPGNEMADRLAKQGAE 141
RnhA COG0328
Ribonuclease HI [Replication, recombination and repair];
139-280 3.35e-38

Ribonuclease HI [Replication, recombination and repair];


Pssm-ID: 440097 [Multi-domain]  Cd Length: 136  Bit Score: 131.12  E-value: 3.35e-38
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 139 VIVYTDGCCSSN-GRkrarAGIGV---YWGPGHPLNVGIrlpGRQTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTI 214
Cdd:COG0328   3 IEIYTDGACRGNpGP----GGWGAvirYGGEEKELSGGL---GDTTNNRAELTALIAALEALKELGPCEVEIYTDSQYVV 75

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 13878717 215 NGITNWVQGWKKNGWrtstgKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGA 280
Cdd:COG0328  76 NQITGWIHGWKKNGW-----KPVKNPDLWQRLDELLARHKVTFEWVKGHAGHPGNERADALANKAL 136
rnhA PRK00203
ribonuclease H; Reviewed
 138-282 5.03e-29

ribonuclease H; Reviewed


Pssm-ID: 178927 [Multi-domain]  Cd Length: 150  Bit Score: 107.99  E-value: 5.03e-29
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717  138 SVIVYTDGCCSSN-GRkrarAGIGVY----------WGpGHPLNvgirlpgrqTNQRAEIHAAckaIMQAKA-QNISKLV 205
Cdd:PRK00203   3 QVEIYTDGACLGNpGP----GGWGAIlrykghekelSG-GEALT---------TNNRMELMAA---IEALEAlKEPCEVT 65

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 13878717  206 LYTDSMFTINGITNWVQGWKKNGWRTSTGKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGAKQ 282
Cdd:PRK00203  66 LYTDSQYVRQGITEWIHGWKKNGWKTADKKPVKNVDLWQRLDAALKRHQIKWHWVKGHAGHPENERCDELARAGAEE 142
Cauli_VI pfam01693
Caulimovirus viroplasmin; This family consists of various caulimovirus viroplasmin proteins. ...
 28-70 2.04e-20

Caulimovirus viroplasmin; This family consists of various caulimovirus viroplasmin proteins. The viroplasmin protein is encoded by gene VI and is the main component of viral inclusion bodies or viroplasms. Inclusions are the site of viral assembly, DNA synthesis and accumulation. Two domains exist within gene VI corresponding approximately to the 5' third and middle third of gene VI, these influence systemic infection in a light-dependent manner.


Pssm-ID: 460297 [Multi-domain]  Cd Length: 44  Bit Score: 82.07  E-value: 2.04e-20
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 13878717    28 FYAVRRGRRTGVFLSWSECKAQVDRFPAARFKKFATEDEAWAF 70
Cdd:pfam01693   2 YYAVAKGRKPGIYTTWDECKAQVKGFPGAKYKSFKTREEAEAF 44
 
Name Accession Description Interval E-value
RNase_HI_eukaryote_like cd09280
Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic ...
 140-281 1.34e-82

Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic counterparts; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. Eukaryotic RNase H is longer and more complex than in prokaryotes. Almost all eukaryotic RNase HI have highly conserved regions at their N-termini called hybrid binding domain (HBD). It is speculated that the HBD contributes to binding the RNA/DNA hybrid. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability, but RNase H is essential in higher eukaryotes. RNase H knockout mice lack mitochondrial DNA replication and die as embryos.


Pssm-ID: 260012 [Multi-domain]  Cd Length: 145  Bit Score: 244.78  E-value: 1.34e-82
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 140 IVYTDGCCSSNGRKRARAGIGVYWGPGHPLNVGIRLPGR-QTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTINGIT 218
Cdd:cd09280   1 VVYTDGSCLNNGKPGARAGIGVYFGPGDPRNVSEPLPGRkQTNNRAELLAVIHALEQAPEEGIRKLEIRTDSKYAINCIT 80

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 13878717 219 NWVQGWKKNGWRTSTGKDVINKEDFMELDELTQ--GMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:cd09280  81 KWIPKWKKNGWKTSKGKPVKNQDLIKELDKLLRkrGIKVKFEHVKGHSGDPGNEEADRLAREGAD 145
RNase_H pfam00075
RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral ...
 137-281 4.47e-62

RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral replication cycle, and often found as a domain associated with reverse transcriptases. Structure is a mixed alpha+beta fold with three a/b/a layers.


Pssm-ID: 395028 [Multi-domain]  Cd Length: 141  Bit Score: 192.59  E-value: 4.47e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717   137 ESVIVYTDGCCSSNgRKRARAGIGVYwgPGHPlNVGIRLPGRQTNQRAEIHAACKAIMQAKAQniSKLVLYTDSMFTING 216
Cdd:pfam00075   2 KAVTVYTDGSCLGN-PGPGGAGAVLY--RGHE-NISAPLPGRTTNNRAELQAVIEALKALKSP--SKVNIYTDSQYVIGG 75

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 13878717   217 ITNWVQGWKKNGWR-TSTGKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:pfam00075  76 ITQWVHGWKKNGWPtTSEGKPVKNKDLWQLLKALCKKHQVYWQWVKGHAGNPGNEMADRLAKQGAE 141
RNase_H_Dikarya_like cd13934
Fungal (dikarya) Ribonuclease H, uncharacterized; This family contains dikarya RNase H, many ...
 140-281 3.79e-45

Fungal (dikarya) Ribonuclease H, uncharacterized; This family contains dikarya RNase H, many of which are uncharacterized. Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. It is widely present in various organisms, including bacteria, archaea and eukaryotes. Most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site residues and have the same catalytic mechanism and functions in cells. RNase H is involved in DNA replication, repair and transcription. An important RNase H function is to remove Okazaki fragments during DNA replication.


Pssm-ID: 260014 [Multi-domain]  Cd Length: 153  Bit Score: 149.66  E-value: 3.79e-45
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 140 IVYTDGCCSSNGRKRARAGIGVYWGPGHPLNVGIRLP----GRQTNQRAEIHAACKAIMQAK------AQNISKLVLYTD 209
Cdd:cd13934   1 LVYIDGACRNNGRPDARAGYGVYFGPDSSYNVSGRLEdtggHPQTSQRAELRAAIAALRFRSwiidpdGEGLKTVVIATD 80

                        90       100       110       120       130       140       150
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 13878717 210 SMFTINGITNWVQGWKKNGWRTSTGKDVINKEDFMELDELTQ-----GMDIQWMHIPGHSgfvgNEEADRLAREGAK 281
Cdd:cd13934  81 SEYVVKGATEWIPKWKRNGWRTSKGKPVKNRDLFELLLDEIEdleegGVEVQFWHVPREL----NKEADRLAKAAAE 153
RNase_HI_prokaryote_like cd09278
RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two ...
 138-281 2.37e-42

RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two evolutionarily unrelated families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD), residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Prokaryotic RNase H varies greatly in domain structures and substrate specificities. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability.


Pssm-ID: 260010 [Multi-domain]  Cd Length: 139  Bit Score: 141.85  E-value: 2.37e-42
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 138 SVIVYTDGCCSSNGRKRARAGIGVYWGPGHPLNVGIRlpgRQTNQRAEIHAACKAIMQAKaqNISKLVLYTDSMFTINGI 217
Cdd:cd09278   1 EIVIYTDGACLGNPGPGGWAAVIRYGDHEKELSGGEP---GTTNNRMELTAAIEALEALK--EPCPVTIYTDSQYVINGI 75

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 13878717 218 TNWVQGWKKNGWRTSTGKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:cd09278  76 TKWIKGWKKNGWKTADGKPVKNRDLWQELDALLAGHKVTWEWVKGHAGHPGNERADRLANKAAD 139
RnhA COG0328
Ribonuclease HI [Replication, recombination and repair];
139-280 3.35e-38

Ribonuclease HI [Replication, recombination and repair];


Pssm-ID: 440097 [Multi-domain]  Cd Length: 136  Bit Score: 131.12  E-value: 3.35e-38
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 139 VIVYTDGCCSSN-GRkrarAGIGV---YWGPGHPLNVGIrlpGRQTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTI 214
Cdd:COG0328   3 IEIYTDGACRGNpGP----GGWGAvirYGGEEKELSGGL---GDTTNNRAELTALIAALEALKELGPCEVEIYTDSQYVV 75

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 13878717 215 NGITNWVQGWKKNGWrtstgKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGA 280
Cdd:COG0328  76 NQITGWIHGWKKNGW-----KPVKNPDLWQRLDELLARHKVTFEWVKGHAGHPGNERADALANKAL 136
Rnh1 COG3341
Ribonuclease HI-related protein, contains viroplasmin and RNaseH domains [General function ...
 28-281 2.36e-35

Ribonuclease HI-related protein, contains viroplasmin and RNaseH domains [General function prediction only];


Pssm-ID: 442570 [Multi-domain]  Cd Length: 203  Bit Score: 126.12  E-value: 2.36e-35
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717  28 FYAVRRGRRTGVFLSWSECKAQVDRFPAARFKKFATEDEAWAFVRSSSSPDGSKGQESAHEQKsqaktskrpreplgege 107
Cdd:COG3341   5 FYAVWKGRKPGIYTTWDECKAQVKGFPGAKYKSFKTKEEAEAALNGNYEDYKGKKKKLSEIEL----------------- 67

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 108 elpepgpkhtrqdtepaavvskdtfsymgESVIVYTDGCCSSNgRKRARAGIGVYWGPGHPLNV-GIRLPGRQ-TNQRAE 185
Cdd:COG3341  68 -----------------------------DSIAVYVDGSCSGN-PGVYEYGGVDTKTGKETFSElFHDGPFAEgTNNAGE 117

                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 186 IHAACKAIMQAKAQNiSKLVLYTDSMftinGITNWVQG-WKKNGWRTSTGKdvinkeDFMELDELTQGMDIQWMHIPGHS 264
Cdd:COG3341 118 FLAAVHALAYLKKKG-SKLPIYSDYR----GAISWVKGkWKTKLERTQAYK------ELFDLIEKKNTYENPFVKVKTHS 186

                       250
                ....*....|....*..
gi 13878717 265 GFVGNEEADRLAREGAK 281
Cdd:COG3341 187 GDKWNEIPDDLARKALG 203
rnhA PRK00203
ribonuclease H; Reviewed
 138-282 5.03e-29

ribonuclease H; Reviewed


Pssm-ID: 178927 [Multi-domain]  Cd Length: 150  Bit Score: 107.99  E-value: 5.03e-29
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717  138 SVIVYTDGCCSSN-GRkrarAGIGVY----------WGpGHPLNvgirlpgrqTNQRAEIHAAckaIMQAKA-QNISKLV 205
Cdd:PRK00203   3 QVEIYTDGACLGNpGP----GGWGAIlrykghekelSG-GEALT---------TNNRMELMAA---IEALEAlKEPCEVT 65

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 13878717  206 LYTDSMFTINGITNWVQGWKKNGWRTSTGKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGAKQ 282
Cdd:PRK00203  66 LYTDSQYVRQGITEWIHGWKKNGWKTADKKPVKNVDLWQRLDAALKRHQIKWHWVKGHAGHPENERCDELARAGAEE 142
RNase_H_like cd06222
Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of ...
 141-277 4.21e-24

Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of spliceosomal protein Prp8; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. It is widely present in various organisms, including bacteria, archaea, and eukaryotes. Most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site residues and have the same catalytic mechanism and functions in cells. RNase H is involved in DNA replication, repair and transcription. An important RNase H function is to remove Okazaki fragments during DNA replication. RNase H inhibitors have been explored as anti-HIV drug targets since RNase H inactivation inhibits reverse transcription. This model also includes the Prp8 domain IV, which adopts the RNase fold but shows low sequence homology; domain IV is implicated in key spliceosomal interactions.


Pssm-ID: 259998 [Multi-domain]  Cd Length: 121  Bit Score: 93.92  E-value: 4.21e-24
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 141 VYTDGCCSSNGRkraRAGIGVYW--GPGHPLNVGIRLPGRQTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTINGIT 218
Cdd:cd06222   1 INVDGSCRGNPG---PAGIGGVLrdHEGGWLGGFALKIGAPTALEAELLALLLALELALDLGYLKVIIESDSKYVVDLIN 77

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|....*....
gi 13878717 219 NWVQGWKKNGwrtstgkdvinKEDFMELDELTQGMDIQWMHIPGHsgfvGNEEADRLAR 277
Cdd:cd06222  78 SGSFKWSPNI-----------LLIEDILLLLSRFWSVKISHVPRE----GNQVADALAK 121
Cauli_VI pfam01693
Caulimovirus viroplasmin; This family consists of various caulimovirus viroplasmin proteins. ...
 28-70 2.04e-20

Caulimovirus viroplasmin; This family consists of various caulimovirus viroplasmin proteins. The viroplasmin protein is encoded by gene VI and is the main component of viral inclusion bodies or viroplasms. Inclusions are the site of viral assembly, DNA synthesis and accumulation. Two domains exist within gene VI corresponding approximately to the 5' third and middle third of gene VI, these influence systemic infection in a light-dependent manner.


Pssm-ID: 460297 [Multi-domain]  Cd Length: 44  Bit Score: 82.07  E-value: 2.04e-20
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 13878717    28 FYAVRRGRRTGVFLSWSECKAQVDRFPAARFKKFATEDEAWAF 70
Cdd:pfam01693   2 YYAVAKGRKPGIYTTWDECKAQVKGFPGAKYKSFKTREEAEAF 44
PRK08719 PRK08719
ribonuclease H; Reviewed
 135-281 3.10e-19

ribonuclease H; Reviewed


Pssm-ID: 236334 [Multi-domain]  Cd Length: 147  Bit Score: 81.83  E-value: 3.10e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717  135 MGESVIVYTDGCCSSNGRKRARAGIG--VYWGPGHPLN-VGIRLPGRQTNQRAEIHAACKAIMQAKAQNisklVLYTDSM 211
Cdd:PRK08719   1 MRASYSIYIDGAAPNNQHGCVRGGIGlvVYDEAGEIVDeQSITVNRYTDNAELELLALIEALEYARDGD----VIYSDSD 76

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717  212 FTINGITNWVQGWKKNGWRTSTGKDVINKEDFMELDELTQGMDIQWMHIPGHSGFVGNEEADRLAREGAK 281
Cdd:PRK08719  77 YCVRGFNEWLDTWKQKGWRKSDKKPVANRDLWQQVDELRARKYVEVEKVTAHSGIEGNEAADMLAQAAAE 146
RNase_HI_bacteria_like cd09277
Bacterial RNase HI containing a hybrid binding domain (HBD) at the N-terminus; Ribonuclease H ...
 139-279 3.39e-16

Bacterial RNase HI containing a hybrid binding domain (HBD) at the N-terminus; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, Type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Prokaryotic RNase H varies greatly in domain structures and substrate specificities. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability. Some bacteria distinguished from other bacterial RNase HI in the presence of a hybrid binding domain (HBD) at the N-terminus which is commonly present at the N-termini of eukaryotic RNase HI. It has been reported that this domain is required for dimerization and processivity of RNase HI upon binding to RNA-DNA hybrids.


Pssm-ID: 260009 [Multi-domain]  Cd Length: 133  Bit Score: 73.29  E-value: 3.39e-16
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 139 VIVYTDGccS-SNGRKRARAGIGVYWGpghplNVGIRLPGRQTNQRA--------EIHAACKAIMQAKAQNISKLVLYTD 209
Cdd:cd09277   1 VIAYVDG--SyNKETKKYGYGVVIIKN-----GKEEEFSGSGNDPEYasmrnvagEIKGAMKAIKYAIENGIKKITIYYD 73

                        90       100       110       120       130       140       150
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 13878717 210 SMftinGITNWVQG-WKKNgwrtstgkDVINKE--DFMelDELTQGMDIQWMHIPGHSGFVGNEEADRLAREG 279
Cdd:cd09277  74 YE----GIEKWATGeWKAN--------KELTKEykEFM--QKYKKKIKIEFVKVKAHSGDKYNELADKLAKKA 132
PRK06548 PRK06548
ribonuclease H; Provisional
 180-280 4.51e-16

ribonuclease H; Provisional


Pssm-ID: 75628 [Multi-domain]  Cd Length: 161  Bit Score: 74.08  E-value: 4.51e-16
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717  180 TNQRAEIhAACKAIMQAKAQNISKLVLYTDSMFTINGITNWVQGWKKNGWRTSTGKDVINKEDFMELDELTQGMDIQWMH 259
Cdd:PRK06548  41 TNNIAEL-TAVRELLIATRHTDRPILILSDSKYVINSLTKWVYSWKMRKWRKADGKPVLNQEIIQEIDSLMENRNIRMSW 119

                         90       100
                 ....*....|....*....|.
gi 13878717  260 IPGHSGFVGNEEADRLAREGA 280
Cdd:PRK06548 120 VNAHTGHPLNEAADSLARQAA 140
Rnase_HI_RT_non_LTR cd09276
non-LTR RNase HI domain of reverse transcriptases; Ribonuclease H (RNase H) is classified into ...
 141-281 5.64e-15

non-LTR RNase HI domain of reverse transcriptases; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). Ribonuclease HI (RNase HI) is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes. RNase HI has also been observed as an adjunct domain to the reverse transcriptase gene in retroviruses, long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. The position of the RNase domain of non-LTR and LTR transposons is at the carboxyl terminal of the reverse transcriptase (RT) domain and their RNase domains group together, indicating a common evolutionary origin. Many non-LTR transposons have lost the RNase domain because their activity is at the nucleus and cellular RNase may suffice; however LTR retrotransposons always encode their own RNase domain because it requires RNase activity in RNA-protein particles in the cytoplasm. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription.


Pssm-ID: 260008 [Multi-domain]  Cd Length: 131  Bit Score: 69.94  E-value: 5.64e-15
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 141 VYTDGccsSNGRKRARAGIGVYWGpGHPLNVGIRLPGRQTNQRAEIHAACKAIMQAKAQ--NISKLVLYTDSMFTINGIT 218
Cdd:cd09276   2 IYTDG---SKLEGSVGAGFVIYRG-GEVISRSYRLGTHASVFDAELEAILEALELALATarRARKVTIFTDSQSALQALR 77

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 13878717 219 NWvqgwkkngwrTSTGKDVINKEDFMELDELTQG---MDIQWmhIPGHSGFVGNEEADRLAREGAK 281
Cdd:cd09276  78 NP----------RRSSGQVILIRILRLLRLLKAKgvkVRLRW--VPGHVGIEGNEAADRLAKEAAS 131
RNase_HI_like cd09279
RNAse HI family that includes archaeal, some bacterial as well as plant RNase HI; Ribonuclease ...
 139-281 1.93e-11

RNAse HI family that includes archaeal, some bacterial as well as plant RNase HI; Ribonuclease H (RNase H) is classified into two evolutionarily unrelated families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Most archaeal genomes contain only type 2 RNase H (RNase HII); however, a few contain RNase HI as well. Although archaeal RNase HI sequences conserve the DEDD active-site motif, they lack other common features important for catalytic function, such as the basic protrusion region. Archaeal RNase HI homologs are more closely related to retroviral RNase HI than bacterial and eukaryotic type I RNase H in enzymatic properties.


Pssm-ID: 260011 [Multi-domain]  Cd Length: 128  Bit Score: 60.18  E-value: 1.93e-11
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 139 VIVYTDGCCSSNGRkraRAGIGVYW--GPGHPLNVGIRLPGRQTNQRAEIHAACKAIMQAKAQNISKLVLYTDSMFTING 216
Cdd:cd09279   1 WTLYFDGASRGNPG---PAGAGVVIysPGGEVLELSERLGFPATNNEAEYEALIAGLELALELGAEKLEIYGDSQLVVNQ 77

                        90       100       110       120       130       140       150
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 217 ItnwvqgwkkngwrtsTGKDVINKEDFMEL-----DELTQGMDIQWMHIPGHSgfvgNEEADRLAREGAK 281
Cdd:cd09279  78 L---------------NGEYKVKNERLKPLlekvlELLAKFELVELKWIPREQ----NKEADALANQALD 128
RNase_HI_RT_Bel cd09273
Bel/Pao family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes ...
 141-280 7.15e-08

Bel/Pao family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote. RNase HI has also been observed as adjunct domains to the reverse transcriptase gene in retroviruses, in long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. Phylogenetic patterns of RNase HI of LTR retroelements is classified into five major families, Ty3/Gypsy, Ty1/Copia, Bel/Pao, DIRS1 and the vertebrate retroviruses. Bel/Pao family has been described only in metazoan genomes. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription.


Pssm-ID: 260005 [Multi-domain]  Cd Length: 131  Bit Score: 50.41  E-value: 7.15e-08
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 13878717 141 VYTDGCCSsngrkraRAGIGVYWGPGHPLNVGirLPGRQTNQRAEIHAACKAIMQAKAQ--NIsklvlYTDSMFTINGIT 218
Cdd:cd09273   2 VFTDGSSF-------KAGYAIVSGTEIVEAQP--LPPGTSAQRAELIALIQALELAKGKpvNI-----YTDSAYAVHALH 67

                        90       100       110       120       130       140
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 13878717 219 NWVQGWKKNGWRtstgKDVINKEDFMELDELTQGMD-IQWMHIPGHS---GFV--GNEEADRLAREGA 280
Cdd:cd09273  68 LLETIGIERGFL----KSIKNLSLFLQLLEAVQRPKpVAIIHIRAHSklpGPLaeGNAQADAAAKQAA 131
 
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.
Help | Disclaimer | Write to the Help Desk
NCBI | NLM | NIH