BTRC: a substrate-recognition component of the SCF (SKP1-CUL1-F-box protein) ubiquitin ligase complex, which mediates the ubiquitination of proteins involved in cell cycle progression, signal transduction and transcription. Regulates the stability of CTNNB1 and participates in Wnt signaling. Interacts directly with SKP1 in the SCF complex. Interacts specifically with phosphorylated CTNNB1 and NFKBIA, ubiquitination substrates. Two alternatively spliced isoforms have been described.
Protein type: Ubiquitin conjugating system; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 10q24.32
Cellular Component: nucleoplasm; SCF ubiquitin ligase complex; cytosol
Molecular Function: protein dimerization activity; protein phosphorylated amino acid binding; protein binding; ubiquitin-protein ligase activity; beta-catenin binding; ligase activity
Biological Process: ubiquitin-dependent protein catabolic process; positive regulation of ubiquitin-protein ligase activity during mitotic cell cycle; circadian rhythm; proteasomal ubiquitin-dependent protein catabolic process; protein polyubiquitination; viral reproduction; regulation of cell cycle; positive regulation of proteolysis; positive regulation of transcription, DNA-dependent; protein ubiquitination; positive regulation of circadian rhythm; protein amino acid dephosphorylation; signal transduction; anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; G2/M transition of mitotic cell cycle; regulation of I-kappaB kinase/NF-kappaB cascade; SCF-dependent proteasomal ubiquitin-dependent protein catabolic process; Wnt receptor signaling pathway; protein destabilization; negative regulation of transcription factor activity; mammary gland epithelial cell proliferation; regulation of circadian rhythm; regulation of ubiquitin-protein ligase activity during mitotic cell cycle; negative regulation of smoothened signaling pathway; mitotic cell cycle; negative regulation of transcription, DNA-dependent
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