The function of Ensembl gene identifier ENSG00000112312 (GMNN, geminin DNA replication inhibitor) is as follows. Inhibits DNA replication by preventing the incorporation of MCM complex into pre-replication complex (pre-RC) (PubMed:14993212, PubMed:20129055, PubMed:24064211, PubMed:9635433). It is degraded during the mitotic phase of the cell cycle (PubMed:14993212, PubMed:24064211, PubMed:9635433). Its destruction at the metaphase- anaphase transition permits replication in the succeeding cell cycle (PubMed:14993212, PubMed:24064211, PubMed:9635433). 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). {ECO:0000269|PubMed:14993212, ECO:0000269|PubMed:20129055, ECO:0000269|PubMed:22615398, ECO:0000269|PubMed:24064211, ECO:0000269|PubMed:9635433}.