FEATURES

FAMILY

DESCRIPTION

Also known as MD2L1_HUMAN, MAD2L1, MAD2. Component of the spindle-assembly checkpoint that prevents the onset of anaphase until all chromosomes are properly aligned at the metaphase plate (PubMed:29162720, PubMed:15024386). In the closed conformation (C-MAD2) forms a heterotetrameric complex with MAD1L1 at unattached kinetochores during prometaphase, the complex recruits open conformation molecules of MAD2L1 (O-MAD2) and then promotes the conversion of O-MAD2 to C-MAD2 (PubMed:29162720). Required for the execution of the mitotic checkpoint which monitors the process of kinetochore-spindle attachment and inhibits the activity of the anaphase promoting complex by sequestering CDC20 until all chromosomes are aligned at the metaphase plate (PubMed:10700282, PubMed:11804586, PubMed:15024386). Monomer and homodimer (PubMed:18022367, PubMed:18318601). Heterodimerizes with MAD2L1 in order to form a tetrameric MAD1L1-MAD2L1 core complex (PubMed:12574116, PubMed:18981471, PubMed:12006501, PubMed:15024386). In the closed and open conformation, interacts with MAD1L1 (PubMed:29162720). Formation of a heterotetrameric core complex containing two molecules each of MAD1L1 and of MAD2L1 promotes binding of another molecule of MAD2L1 to each MAD2L1, resulting in a heterohexamer (PubMed:12006501). Interacts with MAD2L1BP (PubMed:12456649, PubMed:18022368). Interacts with ADAM17/TACE (PubMed:10527948). Interacts with CDC20 (PubMed:9637688, PubMed:12574116, PubMed:18981471, PubMed:10700282). Dimeric MAD2L1 in the closed conformation interacts with CDC20 (PubMed:29162720). Monomeric MAD2L1 in the open conformation does not interact with CDC20 (PubMed:11804586). CDC20 competes with MAD1L1 for MAD2L1 binding (PubMed:11804586). In the closed conformation, interacts with BUB1B (PubMed:29162720). Interacts with TTK (PubMed:29162720). Interacts with TPR (PubMed:18981471). Binds to UBD (via ubiquitin-like 1 domain) during mitosis (PubMed:16495226, PubMed:25422469). Interacts with isoform 1 and isoform 2 of NEK2 (PubMed:20034488). Interacts with HSF1; this interaction occurs in mitosis (PubMed:18794143). Interacts with isoform 3 of MAD1L1; this interaction leads to the cytoplasmic sequestration of MAD2L1 (PubMed:19010891).

EXTERNAL LINKS

MAD2L1

Mitotic spindle assembly checkpoint protein MAD2A

MAD2L1

Molecular Synopsis