Cyclin-dependent kinase binding protein. Enhances cyclin-dependent kinase tyrosine phosphorylation by nonreceptor tyrosine kinases, such as that of CDK5 by activated ABL1, which leads to increased CDK5 activity and is critical for neuronal development, and that of CDK2 by WEE1, which leads to decreased CDK2 activity and growth inhibition. Positively affects neuronal outgrowth. Plays a role as a regulator for p53/p73-induced cell death (By similarity). Found in a complex with p53/TP53 (By similarity). Found in a number of complexes with CDK2, CDK3, CDK5, ABL1, TDRD7, CDK17, CCNA1, CCNE1 and TP73. Interacts with CDK2, CDK3, CDK5, ABL1 and TDRD7. Located in the cell body and proximal region of the developing axonal shaft of immature neurons. Located in axonal growth cone, but not in the distal part of the axon shaft or in dendritic growth cone of mature neurons. Ubiquitous. Expressed in postnatal day 1 (P1), in postmitotic neurons of the subplate, cortex (V/VI) and marginal zone; in postnatal day 7 (P7), in all layers of the cerebral cortex and in the CA1 and CA2 regions of the hippocampus (at protein level). Highly expressed in brain, kidney, liver and lung. Expressed in embryo at 15 dpc and strongly expressed in postmitotic neurons of the subplate, cortical plate, subventrical and marginal zones at 18 dpc (at protein level). Expressed in embryo at 7 dpc onwards. Phosphorylated on Ser-274 by CCNE1/CDK3. Phosphorylated on serine/threonine residues by CDK5 and on tyrosine residues by ABL1. Also phosphorylated in vitro by CCNA1/CDK2, CCNE1/CDK2, CCNA1/CDK3 and CCNE1/CDK3. Belongs to the cyclin family. PubMed:10896159 demonstrated that CABLES1 is not associated with CDK3.