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 71992794    10 MPIELLEDIFQRLPVKNKGRCSQVCRQWQRGFNSKLSWRK 49
Cdd:pfam00646   4 LPDDLLLEILSRLDPKDLLRLSLVSKRWRSLVDSLKLWKK 43

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 71992794    10 MPIELLEDIFQRLPVKNKGRCSQVCRQWQRGFNSKLSWRK 49
Cdd:pfam00646   4 LPDDLLLEILSRLDPKDLLRLSLVSKRWRSLVDSLKLWKK 43

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 71992794  10 MPIELLEDIFQRLPVKNKGRCSQVCRQWQR 39
Cdd:cd09917   3 LPDEILLKILSYLDPRDLLRLSLVCKRWRE 32

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
                ....*....|....*....|....*....
gi 71992794   9 TMPIELLEDIFQRLPVKNKGRCSQVCRQW 37
Cdd:cd22090   4 GLPLELWRLILAYLPVRDLCRCCQVCRAW 32

F-box domain found in F-box only protein 33 (FBXO33) and similar proteins; FBXO33, also called FBX33, 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. It exerts similar functions as F-box involved in polyQ pathogenesis (FipoQ) in modulating the ubiquitination and solubility of expanded SCA3-polyQ proteins. 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 71992794   7 FKTMPIELLEDIFQRLPVKNKGRCSQVCRQWQRGFNSKLSWRKFTFQ 53
Cdd:cd22104   1 WANLPSVVLVHIFSYLPPRDRLRASSTCRRWREALFHPSLWRSLRLH 47

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
                ....*....|....*....|....*....|....*...
gi 71992794  11 PIELLEDIFQRLPVKNKGRCSQVCRQWQRGFNSKLSWR 48
Cdd:cd22151   4 PDDLLQEIFKRLDPKSLARAACVCRRWRAAARSESLWE 41

F-box domain found in F-box/LRR-repeat protein 8 (FBXL8) and similar proteins; FBXL8, also called F-box and leucine-rich repeat protein 8, or F-box protein FBL8, is the substrate-recognition component of an SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex. 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
                ....*....|....*....|....*...
gi 71992794  10 MPIELLEDIFQRLPVKNKGRCSQVCRQW 37
Cdd:cd22121   3 LPEEILVHIFRHLSLRDRYAAAQVCKHW 30

F-box domain found in F-box/LRR-repeat protein 3 (FBXL3), F-box/LRR-repeat protein 21 (FBXL21) and similar proteins; FBXL3, also called F-box and leucine-rich repeat protein 3A, or F-box/LRR-repeat protein 3A, is the substrate-recognition component of the SCF(FBXL3) E3 ubiquitin ligase complex that mainly acts in the nucleus and mediates ubiquitination and subsequent degradation of CRY1 and CRY2, and thus, is involved in circadian rhythm function. It plays a key role in the maintenance of both the speed and the robustness of the circadian clock oscillation. FBXL21, also called F-box and leucine-rich repeat protein 21, F-box and leucine-rich repeat protein 3B, or F-box/LRR-repeat protein 3B, is the substrate-recognition component of the SCF(FBXL21) E3 ubiquitin ligase complex that mainly acts in the cytosol and mediates ubiquitination of CRY proteins (CRY1 and CRY2), leading to CRY protein stabilization, and thus, is also involved in circadian rhythm function. It plays regulates the oscillation of the circadian clock through ubiquitination and stabilization of cryptochromes. 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 71992794  10 MPIELLEDIFQRLPVKNKGRCSQVCRQWQRGFN 42
Cdd:cd22116   5 LPSDIILHIFQYLPLLDRAHASLVCRLWNEVFH 37