Acts as a component of the histone deacetylase NuRD complex which participates in the remodeling of chromatin (PubMed:33283408). Inhibits cell cycle G1/S phase transition by repressing CDK2 expression and activation; represses CDK2 activation by inhibiting its interaction with cyclin E and A (PubMed:23781148). Plays a role in regulating the self-renewal of embryonic stem cells (ESCs) and in maintaining cell survival during terminal differentiation of ESCs (By similarity). Regulates microtubule organization of metaphase II oocytes (By similarity). {ECO:0000250|UniProtKB:Q9CPY4, ECO:0000269|PubMed:23781148, ECO:0000269|PubMed:33283408}. This is the function of CDK2AP2 (cyclin dependent kinase 2 associated protein 2, Ensembl gene identifier ENSG00000167797).