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cul-2

Gene
cul-2
Protein
Cullin-2
Organism
Caenorhabditis elegans
Length
850 amino acids
Function
Core component of multiple cullin-RING-based CBC (Cul2-ElonginB-ElonginC) E3 ubiquitin-protein ligase complexes which mediate the ubiquitination and subsequent proteasomal degradation of target proteins. As a scaffold protein may contribute to catalysis through positioning of the substrate and the ubiquitin-conjugating enzyme. The functional specificity of the CBC complex depends on the variable substrate recognition component (By similarity). May function in ubiquitin-mediated degradation of CKIs to target cki-1 for degradation. CBC(zif-1) may ensure germline precursor cell asymmetry by targeting germline proteins for destruction if expressed in non-germline cells (PubMed:12894212). As part of the CBC(fem-1) complex directs ubiquitination of tra-1 (PubMed:17609115). As part of the CBC(lrr-1) complex, required for the ubiquitination and dissasembly of the CMG helicase complex from chromatin at the end of DNA replication (PubMed:28368371). Positive cell-cycle regulator that is required at two distinct points in the cell cycle; the G1-to-S-phase transition and mitosis (PubMed:10587644). Also required for proper cytoskeletal movement and mitotic chromosome condensation (PubMed:10587644).
Similarity
Belongs to the cullin family.
Mass
97.97 kDa
Sequence
MTFNIFLTFSTISPKIFSVTSTGNRSEVHRPQAKLASNTQPTSNRTTLGRRKAISDDNFPVVEPILKKIRPPRPQVMYSLKPKVVEFDKVWVQLRPSIIDIINLRPITNVQWHHKFSDVYDICVSIPTPLSERLYNEVKACIQEHVRQKRQDIVDVDPDLLLQEYHKMWRVFHEGAIFIHRLFGYLNKQFVKQKRCTDLDNFAQYAAFLQIPDVKEIGCLALEIWKEDLVKTILPQLVKLLLIAIDNDRKGNFPHIANEVSGVINSFVKMEETDFDVVPAEGARYKARESTTAFYQESFEKPLLTDTEQYYSALAQKMLTDLSCSEYMEQVIVLLEQEEMRAKKYLHESSVEKVITLCQKVMIKAHKDKLHAVCHDLITNEENKDLRNMYRLLKPIQAGLSVMVKEFEEYVKKKGLEAVSRLTGENVPQQFVENVLRVYNKFNDMKTAVFMDDGEFSSGLDKALQGVVNSKEPGQSVPKASERLARYTDGLLKKSTKGLSETDLEAKLDSAIVIFRYIEDKDIFQKFYSKMLANRLIASTSISMDAEELMINKLKQACGYEFTSKLSRMFTDIGLSQELSNNFDKHIADIKTVQPDVKFVPTQTMILQAGSWPLNAPQLSTNSNNQTAQDVANFHLPRILQPVIQEFEKFYTGKHNGRKLTWLFNMSQGDVRLTYLDKQYVAQMYVYQMAALLCFERRDAILVKDIGEEIGVSGDYLLKTIRTILDVTLLTCDDQNLTADSLVRLNMSMTSKRMKFRLQAPQVNKAVEKEQEAVANTVSQDRKYYMECAIVRIMKTRKVLKHNALVTEIMDQTKGRFSPDVPFIKKSIEDLIEKMYIQRTDQNDEYQYLA