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    GMNN

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    For Research Use Only. Not For Clinical Use.


    Background

    This gene encodes a protein that plays a critical role in cell cycle regulation. The encoded protein inhibits DNA replication by binding to DNA replication factor Cdt1, preventing the incorporation of minichromosome maintenance proteins into the pre-replication complex. The encoded protein is expressed during the S and G2 phases of the cell cycle and is degraded by the anaphase-promoting complex during the metaphase-anaphase transition. Increased expression of this gene may play a role in several malignancies including colon, rectal and breast cancer. Alternatively spliced transcript variants have been observed for this gene, and two pseudogenes of this gene are located on the short arm of chromosome 16. [provided by RefSeq, Oct 2011]
    Protein class

    Cancer-related genes, Disease related genes, Human disease related genes

    Predicted location

    Intracellular

    Single cell type specificity

    Cell type enhanced (Paneth cells, Glandular and luminal cells)

    Immune cell specificity

    Low immune cell specificity

    Cell line specificity

    Low cell line specificity

    Interaction

    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).

    Molecular function

    DNA replication inhibitor

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