F-box domain found in F-box only proteins FBXO6, FBXO44 and similar proteins; This subfamily includes FBXO6 and FBXO44. FBXO6, also called FBX6, F-box protein that recognizes sugar chains 2 (FBS2), or F-box/G-domain protein 2 (FBG2), is a substrate-recognition component of SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complexes. It is involved in the endoplasmic reticulum-associated degradation pathway (ERAD) for misfolded lumenal proteins, by recognizing and binding sugar chains on unfolded glycoproteins that are retro-translocated into the cytosol and promoting their ubiquitination and subsequent degradation. FBXO6 can recognize and bind denatured glycoproteins, which are modified with not only high-mannose but also complex-type oligosaccharides. It also recognizes sulfated glycans. FBXO6 is involved in DNA damage response by specifically recognizing activated CHEK1 (phosphorylated on 'Ser-345'), promoting its ubiquitination and degradation. FBXO44, also called FBXO6A, FBX44, or F-box/G-domain protein 3 (FBG3), is a substrate-recognition component of an SCF-type E3 ubiquitin ligase complex. It interacts with SKP1 and CUL1. FBXO44 mediates BRCA1 ubiquitination and degradation. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958778188  93 VGNINELPENILLELFTHIPARQLLLRCRPVCSLWRDLIDLVTLWKRKCLQEGFITEDWDQPVADWKIFYFLRsLQRNLL 172
Cdd:cd22168     1 MLTISDLPEDVLLEILSLVPARDLILSCRLVCSRWRDLVDLPTLWKRKCQREGFILKDWDGPPKDWKIFYFLR-LERNLL 79

                  ...
gi 1958778188 173 HNP 175
Cdd:cd22168    80 KNP 82

F-box domain found in F-box only proteins FBXO6, FBXO44 and similar proteins; This subfamily includes FBXO6 and FBXO44. FBXO6, also called FBX6, F-box protein that recognizes sugar chains 2 (FBS2), or F-box/G-domain protein 2 (FBG2), is a substrate-recognition component of SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complexes. It is involved in the endoplasmic reticulum-associated degradation pathway (ERAD) for misfolded lumenal proteins, by recognizing and binding sugar chains on unfolded glycoproteins that are retro-translocated into the cytosol and promoting their ubiquitination and subsequent degradation. FBXO6 can recognize and bind denatured glycoproteins, which are modified with not only high-mannose but also complex-type oligosaccharides. It also recognizes sulfated glycans. FBXO6 is involved in DNA damage response by specifically recognizing activated CHEK1 (phosphorylated on 'Ser-345'), promoting its ubiquitination and degradation. FBXO44, also called FBXO6A, FBX44, or F-box/G-domain protein 3 (FBG3), is a substrate-recognition component of an SCF-type E3 ubiquitin ligase complex. It interacts with SKP1 and CUL1. FBXO44 mediates BRCA1 ubiquitination and degradation. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958778188  93 VGNINELPENILLELFTHIPARQLLLRCRPVCSLWRDLIDLVTLWKRKCLQEGFITEDWDQPVADWKIFYFLRsLQRNLL 172
Cdd:cd22168     1 MLTISDLPEDVLLEILSLVPARDLILSCRLVCSRWRDLVDLPTLWKRKCQREGFILKDWDGPPKDWKIFYFLR-LERNLL 79

                  ...
gi 1958778188 173 HNP 175
Cdd:cd22168    80 KNP 82

A Receptor for Ubiquitination Targets;

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|..
gi 1958778188   99 LPENILLELFTHIPARQLLlRCRPVCSLWRDLIDLVTLWKRK 140
Cdd:smart00256   1 LPDEILEEILSKLDPKDLL-RLRKVSRKWRSLIDSHDFWFKL 41

F-box domain found in F-box only proteins FBXO6, FBXO44 and similar proteins; This subfamily includes FBXO6 and FBXO44. FBXO6, also called FBX6, F-box protein that recognizes sugar chains 2 (FBS2), or F-box/G-domain protein 2 (FBG2), is a substrate-recognition component of SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complexes. It is involved in the endoplasmic reticulum-associated degradation pathway (ERAD) for misfolded lumenal proteins, by recognizing and binding sugar chains on unfolded glycoproteins that are retro-translocated into the cytosol and promoting their ubiquitination and subsequent degradation. FBXO6 can recognize and bind denatured glycoproteins, which are modified with not only high-mannose but also complex-type oligosaccharides. It also recognizes sulfated glycans. FBXO6 is involved in DNA damage response by specifically recognizing activated CHEK1 (phosphorylated on 'Ser-345'), promoting its ubiquitination and degradation. FBXO44, also called FBXO6A, FBX44, or F-box/G-domain protein 3 (FBG3), is a substrate-recognition component of an SCF-type E3 ubiquitin ligase complex. It interacts with SKP1 and CUL1. FBXO44 mediates BRCA1 ubiquitination and degradation. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958778188  93 VGNINELPENILLELFTHIPARQLLLRCRPVCSLWRDLIDLVTLWKRKCLQEGFITEDWDQPVADWKIFYFLRsLQRNLL 172
Cdd:cd22168     1 MLTISDLPEDVLLEILSLVPARDLILSCRLVCSRWRDLVDLPTLWKRKCQREGFILKDWDGPPKDWKIFYFLR-LERNLL 79

                  ...
gi 1958778188 173 HNP 175
Cdd:cd22168    80 KNP 82

F-box domain found in the F-box associated (FBA) family of F-box proteins; The F-box associated (FBA) family is composed of FBXO2, FBXO6, FBXO17, FBXO27, and FBXO44, which contain a conserved G domain that mediates substrate binding. Members of this family play diverse roles in glycoprotein quality control. They bind high mannose and sulfated glycoproteins, with one FBA protein, FBXO44, failing to bind any glycans on the tested arrays. FBA proteins are components of canonical SCF (Skp1, Cullin1, and Rbx1) complexes, yet FBXO2 bound very little Cullin1, suggesting that FBXO2 may exist primarily as a heterodimer with Skp1. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30
                  ....*....|....*....|....*....|....*..
gi 1958778188  96 INELPENILLELFTHIPARQLLLRCRPVCSLWRDLID 132
Cdd:cd22083     1 LNEIPEELLLEILTHVPATSLITNCRLVCTLWRDIID 37

F-box-like; This is an F-box-like family.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*.
gi 1958778188  96 INELPENILLELFTHIPARQLLlRCRPVCSLWRDLIDLVTLWKRKC 141
Cdd:pfam12937   1 LSSLPDEILLQIFSYLDPKDLL-RLALVCRRWRELASDDSLWRRLC 45

F-box domain found in F-box only protein 18 (FBXO18) and similar proteins; FBXO18, also called FBX18, or F-box DNA helicase 1 (FBH1), is a 3'-5' DNA helicase and the substrate-recognition component of the SCF(FBH1) E3 ubiquitin ligase complex that plays a key role in response to stalled/damaged replication forks. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1958778188  96 INELPENILLELFTHIPARQLLLRCRPVCSLWRDLI--DLVTLWKRK 140
Cdd:cd22095     2 IQQLPEELLRNIFAFLPAEDLYQNISLVCRHWRDIVsdPLFIPWKKL 48

F-box domain; This domain is approximately 50 amino acids long, and is usually found in the N-terminal half of a variety of proteins. Two motifs that are commonly found associated with the F-box domain are the leucine rich repeats (LRRs; pfam00560 and pfam07723) and the WD repeat (pfam00400). The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1958778188  96 INELPENILLELFTHIPARQLLlRCRPVCSLWRDLIDLVTLWKR 139
Cdd:pfam00646   1 LLDLPDDLLLEILSRLDPKDLL-RLSLVSKRWRSLVDSLKLWKK 43

F-box domain found in F-box only protein 31 (FBXO31) and similar proteins; FBXO31, also called FBX31, or FBXO14, is a component of an SCF (SKP1-cullin-F-box) protein ligase complex that plays a central role in G1 arrest following DNA damage. It specifically recognizes phosphorylated cyclin-D1 (CCND1), promoting its ubiquitination and degradation by the proteasome, resulting in G1 arrest. FBXO31 may act as a tumor suppressor. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*....
gi 1958778188  96 INELPENILLELFTHIPARQLLLRCRpVCSLWRDLIDLVTLWKRKCLQE 144
Cdd:cd22102     1 ILDLPPELLVEIFSSLPGTDLPSLAQ-VCKKFREILNTDTIWQRRCKEE 48

F-box domain found in F-box only protein 1 (FBXO1) and similar proteins; FBXO1, also called FBX1, or cyclin-F, is a substrate-recognition component of an SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of CP110 during G2 phase, thereby acting as an inhibitor of centrosome reduplication. It is the largest among all cyclins and oscillates in the cell cycle like other cyclins. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1958778188  95 NINELPENILLELFTHIPARQLL-LRCrpVCSLWRDLIDL-VTLWKRKCLQE 144
Cdd:cd22082     1 TLWSLPEEVLLHILKGLPIKDLLnMRA--VHSRFKDLIDSnPSLWANASFQG 50

F-box domain found in F-box only protein 16 (FBXO16) and similar proteins; FBXO16, also called FBX16, is part of an SCF (SKP1-cullin-F-box) protein ligase complex. It probably recognizes and binds to some phosphorylated proteins and promotes their ubiquitination and degradation. It functions as a tumor suppressor by attenuating nuclear beta-catenin function. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1958778188  99 LPENILLELFTHIPARQLLlRCRPVCSLWRDLIDLVTLWKRKCLQEG 145
Cdd:cd22172     9 LPRVLSLYIFSFLDPRSLC-RCAQVCWYWKYLTELDQLWMPKCLRFG 54

F-box domain found in F-box only protein 10 (FBXO10) and similar proteins; FBXO10, also called FBX10, or PRMT11, is the substrate-recognition component of an SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex. The SCF(FBXO10) complex mediates ubiquitination and degradation of BCL2, an anti-apoptotic protein, thereby playing a role in apoptosis by controlling the stability of BCL2. It also associates with the receptor for advanced glycation end products (RAGE) to mediate its ubiquitination and degradation. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1958778188  95 NINELPENILLELFTHIPARQLLlRCRPVCSLWRDLIDLV--TLWKRKCLQ 143
Cdd:cd22090     1 EVTGLPLELWRLILAYLPVRDLC-RCCQVCRAWYELILSLdsTRWKQLYLG 50

F-box domain found in F-box/LRR-repeat protein 5 (FBXL5) and similar proteins; FBXL5, also called F-box and leucine-rich repeat protein 5, F-box protein FBL4/FBL5, or p45SKP2-like protein, is the substrate-recognition component of an SCF (SKP1-cullin-F-box) protein ligase complex that plays a central role in iron homeostasis by promoting the ubiquitination and subsequent degradation of IREB2/IRP2. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1958778188  96 INELPENILLELFTHIPARQLLlRCRPVCSLWRDLIDLVTLW 137
Cdd:cd22118     1 ISSLPPEIMLKIFSYLNPQDLC-RCAQVCTKWSQLARDGSLW 41