CDK5 regulatory subunit-associated protein 2 (CDK5RAP2) is a centrosomal protein that regulates centrosomal maturation by recruitment of a gamma-tubulin ring complex (gamma-TuRC) onto centrosomes []. It interacts directly with EB1, a prototypic member of microtubule plus-end tracking proteins. The CDK5RAP2-EB1 complex regulates microtubule dynamics and stability []. CDK5RAP2 also interacts with Cep169, a microtubule plus-end-tracking centrosomal protein; this interaction regulates stability of microtubules []. Mutations in the CDK5RAP2 gene cause microcephaly 3, primary, autosomal recessive (MCPH3) [, ].
This N-terminal region is found in SMYLE (for short myomegalin-like EB1 binding protein). It includes the SMYLE homology (SmyH) domain found in the first 100 residues at the N terminus. This conserved SmyH domain is required and sufficient for PKA scaffolding protein AKAP9, and the pericentrosomal protein CDK5RAP2 binding [].
