FEATURES

FAMILY

cyclin-dependent kinase 5 activator family

DESCRIPTION

Also known as CD5R1_HUMAN, CDK5R1, CDK5R, NCK5A. p35 is a neuron specific activator of CDK5. The complex p35/CDK5 is required for neurite outgrowth and cortical lamination. Involved in dendritic spine morphogenesis by mediating the EFNA1-EPHA4 signaling. Activator of TPKII. The complex p35/CDK5 participates in the regulation of the circadian clock by modulating the function of CLOCK protein: phosphorylates CLOCK at 'Thr-451' and 'Thr-461' and regulates the transcriptional activity of the CLOCK-ARNTL/BMAL1 heterodimer in association with altered stability and subcellular distribution. Heterodimer composed of a catalytic subunit CDK5 and a regulatory subunit CDK5R1 (p25) and macromolecular complex composed of at least CDK5, CDK5R1 (p35) and CDK5RAP1 or CDK5RAP2 or CDK5RAP3. Only the heterodimer shows kinase activity. Interacts with EPHA4 and NGEF; may mediate the activation of NGEF by EPHA4 (By similarity). Interacts with RASGRF2. The complex p35/CDK5 interacts with CLOCK.

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EXTERNAL LINKS

CDK5R1

Cyclin-dependent kinase 5 activator 1

ligandability Mutations

CDK5R1

Molecular Synopsis