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        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1965565136  84 EALDFTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKCLRFNW 138
Cdd:cd22172     1 EHIDFTRVLPRVLSLYIFSFLDPRSLCRCAQVCWYWKYLTELDQLWMPKCLRFGW 55

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        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1965565136  84 EALDFTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKCLRFNW 138
Cdd:cd22172     1 EHIDFTRVLPRVLSLYIFSFLDPRSLCRCAQVCWYWKYLTELDQLWMPKCLRFGW 55

A Receptor for Ubiquitination Targets;

                           10        20        30
                   ....*....|....*....|....*....|.
gi 1965565136   92 LPRVLSLHIFSFLDPRSLCRCAQVSWHWKNL 122
Cdd:smart00256   1 LPDEILEEILSKLDPKDLLRLRKVSRKWRSL 31

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        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1965565136  84 EALDFTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKCLRFNW 138
Cdd:cd22172     1 EHIDFTRVLPRVLSLYIFSFLDPRSLCRCAQVCWYWKYLTELDQLWMPKCLRFGW 55

F-box domain found in F-box only protein 16 (FBXO16), epithelial cell-transforming sequence 2 oncogene-like (ECT2L) and similar proteins; This family includes FBXO16 and ECT2L. 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. ECT2L, also called lung-specific F-box and DH domain-containing protein, or putative guanine nucleotide exchange factor LFDH, may act as a guanine nucleotide exchange factor (GEF). 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 1965565136  87 DFTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKCLR 135
Cdd:cd22094     1 DFTRVLPRFLSLYIFSYLDPRSLCRAAQVSWYWKFLCESDELWLPKCLR 49

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

                          10        20        30
                  ....*....|....*....|....*....|....*...
gi 1965565136  92 LPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLW 129
Cdd:pfam12937   4 LPDEILLQIFSYLDPKDLLRLALVCRRWRELASDDSLW 41

F-box domain found in F-box/WD repeat-containing protein 8 (FBXW8) and similar proteins; FBXW8, also called F-box and WD-40 domain-containing protein 8, or F-box only protein 29 (FBXO29), is the substrate-recognition component of a Cul7-RING ubiquitin-protein ligase complex, which mediates the ubiquitination and subsequent proteasomal degradation of target proteins, such as GORASP1, IRS1, MAP4K1/HPK1. 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 1965565136  88 FTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKC 133
Cdd:cd22134     3 FDIQLPRELALKIFQYLSVTDLCRCAQVSKSWKSLAEDELLWYRIC 48

F-box domain superfamily; This short domain is commonly found at the N-terminus of various proteins, and typically co-occurs with one or more other conserved domains or motifs, such as leucine rich repeats, WD40 repeats, kelch, tub, spry, and others. 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. One of the best researched roles of F-box proteins is their participation in SCF (Skp1-Cul1-F-box protein), a multi-protein complex that functions as a ubiquitin E3 ligase, where the role of the F-box protein is to recruit target substrates. Gene families containing the F-box are found greatly expanded in narrow taxonomic lineages, such as flowering plants and nematodes. In this hierarchical classification, many of the subfamilies are named according to their domain architectures.

                          10        20        30
                  ....*....|....*....|....*....|....*
gi 1965565136  90 TKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTE 124
Cdd:cd09917     1 SDLPDEILLKILSYLDPRDLLRLSLVCKRWRELAS 35

F-box domain found in F-box/LRR-repeat protein 2 (FBXL2), F-box/LRR-repeat protein 20 (FBXL20) and similar proteins; The family includes FBXL2 and FBXL30. FBXL2, also called F-box and leucine-rich repeat protein 2, or F-box protein FBL2/FBL3, is a calcium-activated substrate-recognition component of an SCF (SKP1-cullin-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Unlike many F-box proteins, FBXL2 does not seem to target phosphodegron within its substrates but rather calmodulin-binding motifs and is thereby antagonized by calmodulin. FBXL20, also called SCRAPPER, F-box and leucine-rich repeat protein 20, or F-box/LRR-repeat protein 2-like, is a component of a synapse-localized SCF-type E3 ubiquitin ligase which regulates neural transmission. It is widely expressed in the central nervous system and plays an important role in the ubiquitin-dependent degradation of regulating synaptic membrane exocytosis 1 (RIM1), which is an important factor in the release of synaptic vesicles. It may also mediate the ubiquitin degradation of E-cadherin resulting in an increased invasive ability of malignant cells. 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 1965565136  91 KLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNL 122
Cdd:cd22115     6 KLPKELLLRIFSFLDVVTLCRCAQVSKYWNVL 37

F-box domain found in F-box/WD repeat-containing protein 12 (FBXW12) and similar proteins; FBXW12, also called F-box and WD-40 domain-containing protein 12, or F-box only protein 35 (FBXO35), is the substrate-recognition component of the SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex that mediates the ubiquitination and subsequent proteasomal degradation of target proteins. It functions as an epithelial growth 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 1965565136  92 LPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKC 133
Cdd:cd22137     3 LPDLPMLRIFSFLDAFSLLQAAQVNKQWNKVADSDYLWRNLC 44

F-box domain found in F-box/WD repeat-containing protein 7 (FBXW7) and similar proteins; FBXW7, also called Archipelago homolog (Ago), F-box and WD-40 domain-containing protein 7, F-box protein FBX30, SEL-10, or Cdc4, is the 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 target proteins, such as cyclin-E (CCNE1 or CCNE2), DISC1, JUN, MYC, NOTCH1 released notch intracellular domain (NICD), NOTCH2, MCL1, and probably PSEN1. 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 1965565136  87 DFTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLW 129
Cdd:cd22133    16 DFISLLPKELALYVLSFLEPKDLLQAAQTCRYWRILAEDNLLW 58

F-box domain found in uncharacterized F-box protein group similar to F-box only protein 3 (FBXO3); This subfamily corresponds to a group of uncharacterized F-box proteins which show sequence similarity to F-box only protein 3 (FBXO3). FBXO3, also called FBX3, is the substrate-recognition component of an SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex, that mediates the ubiquitination of HIPK2 and probably that of EP300, leading to rapid degradation by the proteasome. It also promotes ubiquitylation and transcriptional activity of AIRE (autoimmune regulator). 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 1965565136  92 LPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKC 133
Cdd:cd22139     4 LPDELWLHIFSFLSPKDLCQVALVCRRFNRLASDESLWKQIC 45

F-box domain found in F-box/WD repeat-containing protein 10 (FBXW10) and similar proteins; FBXW10, also called F-box and WD-40 domain-containing protein 10, or ubiquitin ligase-specificity factor, is a probable substrate-recognition component of an SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Its overexpression leads to degradation of CBX5 and CBX1. FBXW10 is negatively regulated in transcription and expression levels by protein O-GlcNAcylation. 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 1965565136  88 FTTKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTE 124
Cdd:cd22136     1 FIRCLPVHLSKYILSMLDKKSLNNCLCVSQHWRALTE 37

F-box domain found in Arabidopsis thaliana F-box protein GID2 and similar proteins; AtGID2, also called protein SLEEPY 1, is an essential component of the SCF-type E3 ligase complex, SCF(GID2), a complex that positively regulates the gibberellin signaling pathway. Upon gibberellin treatment, the SCF(GID2) complex mediates the ubiquitination and subsequent degradation of DELLA proteins (GAI, RGA and RGL2), some repressors of the gibberellin pathway, leading to the activation of the pathway. 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 1965565136  91 KLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKC 133
Cdd:cd22151     2 KLPDDLLQEIFKRLDPKSLARAACVCRRWRAAARSESLWENAC 44

F-box domain found in F-box only protein 45 (FBXO45) and similar proteins; FBXO45, also called FBX45, or F-box/SPRY domain-containing protein 1, functions as the substrate-recognition component of E3 ubiquitin ligase complexes. It is critical for synaptogenesis, neuronal migration, and synaptic transmission. 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 1965565136  90 TKLP-RVLSlHIFSFLDPRSLCRCAQVSWHWKNLTE 124
Cdd:cd22111     2 ARLPsRVLE-VIFSYLDLPDLRNCSLVCKSWYRLLN 36

F-box domain found in the early mitotic inhibitor (EMI) family of F-box proteins; The EMI family includes FBX5 (EMI1) and FBX43 (EMI2), which are anaphase-promoting complex/cyclosome (APC/C) inhibitors that bind APC/C-CCD20 (Cell division cycle protein 20) and/or APC/C-CDH1 (CDC20 homologue 1) complexes. 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 1965565136  92 LPRVLSlHIFSFLDPRSLCRCAQVSWHWKNL 122
Cdd:cd22086     8 CPHILS-KILSYLSPEDLCRVSCVSKTWRQI 37

F-box domain found in F-box only protein 3 (FBXO3) and similar proteins; FBXO3, also called FBX3, is the substrate-recognition component of an SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex. It mediates the ubiquitination of HIPK2 and probably that of EP300, leading to rapid degradation by the proteasome. It also promotes ubiquitylation and transcriptional activity of AIRE (autoimmune regulator). 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 1965565136  92 LPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLWMLKC 133
Cdd:cd22084     4 LPSDPLLNILSFLDYRDLISCSQVCRRLNQLCSHDPLWKRLC 45

F-box domain found in F-box/LRR-repeat protein 7 (FBXL7) and similar proteins; FBXL7, also called F-box and leucine-rich repeat protein 7, or F-box protein FBL6/FBL7, is the 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 Aurora kinase A (AURKA) during mitosis, causing mitotic arrest. 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 1965565136  92 LPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLW 129
Cdd:cd22120     4 LPDDVILQIFSHLPTNQLCRCARVCRRWYNLAWDPRLW 41

F-box domain found in Arabidopsis thaliana SKP1-interacting partner 31 (AtSKIP31) and similar proteins; AtSKIP31, also called F-box protein SKIP31, is a component of SCF(ASK-cullin-F-box) E3 ubiquitin ligase complexes, which may mediate the ubiquitination and subsequent proteasomal degradation of target proteins. It interacts with SKP1A/ASK1 and SPK1B/ASK2. 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 1965565136  90 TKLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLW 129
Cdd:cd22166     2 TKLPPELFRHILKFLSPEDLTSCATVCRFLRGAASDESLW 41

F-box domain found in uncharacterized F-box protein group similar to F-box only protein 13 (FBXO13); The family corresponds to a group of uncharacterized F-box proteins which show sequence similarity to F-box only protein 13 (FBXO13). FBXO13, also called FBX13, or F-box/LRR-repeat protein 17 (FBL17), or F-box and leucine-rich repeat protein 17 (FBXL17), is the substrate-recognition component of the SCF(FBXL17) E3 ubiquitin ligase complex, a key component of a quality control pathway required to ensure functional dimerization of BTB domain-containing proteins (dimerization quality control, DQC). 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 1965565136  91 KLPRVLSLHIFSFLDPRSLCRCAQVSWHWKNLTELDQLW 129
Cdd:cd22138     3 SLPVECQLKIFSFLSEVDKCLAATVCRSWSELIRSPRLW 41