FEATURES

FAMILY

DESCRIPTION

Also known as GEMI_HUMAN, GMNN. Inhibits DNA replication by preventing the incorporation of MCM complex into pre-replication complex (pre-RC) (PubMed:9635433, PubMed:14993212, PubMed:20129055, PubMed:24064211). It is degraded during the mitotic phase of the cell cycle (PubMed:9635433, PubMed:14993212, PubMed:24064211). Its destruction at the metaphase-anaphase transition permits replication in the succeeding cell cycle (PubMed:9635433, PubMed:14993212, PubMed:24064211). Inhibits histone acetyltransferase activity of KAT7/HBO1 in a CDT1-dependent manner, inhibiting histone H4 acetylation and DNA replication licensing (PubMed:20129055). Inhibits the transcriptional activity of a subset of Hox proteins, enrolling them in cell proliferative control (PubMed:22615398). Homotetramer (PubMed:15313623, PubMed:15260975, PubMed:15378034, PubMed:19906994). Interacts with CDT1; this inhibits binding of the MCM complex to origins of replication (PubMed:14993212, PubMed:21543332, PubMed:15260975, PubMed:19906994). The complex with CDT1 exists in two forms, a 'permissive' heterotrimer and an 'inhibitory' heterohexamer (PubMed:14993212, PubMed:15260975, PubMed:19906994). Interacts (via coiled-coil domain) with IDAS (via coiled-coil domain); this targets GMNN to the nucleus (PubMed:21543332). The heterodimer formed by GMNN and MCIDAS has much lower affinity for CDT1 than the GMNN homodimer (PubMed:24064211). Interacts with a subset of Hox proteins, affinity increasing from anterior to posterior types, the strongest interaction being with HOXB1, HOXC9 and HOXD10 (PubMed:22615398). Interacts with LRWD1 from G1/S to mitosis (PubMed:22645314).

EXTERNAL LINKS

GMNN

Geminin

GMNN

Molecular Synopsis