What is "geminin"

n. (context protein English) A nuclear protein that inhibits DNA replication

Geminin, DNA replication inhibitor, also known as GMNN, is a protein in humans encoded by the GMNN gene.

Geminin is a nuclear protein that is present in most eukaryotics and highly conserved across species. Numerous functions have been elucidated for Geminin including roles in metazoan cell cycle, cellular proliferation, cell lineage commitment, and neural differentiation.