participates in protein phosphorylation signal transduction circadian rhythm positive regulation of cell population proliferation response to toxic substance animal organ regeneration positive regulation of fibroblast proliferation CDK2-related kinase cell division protein kinase 4 Homo sapiens protein cyclin-dependent kinase 4 (human) PSK-J3 (human) DTO:03100070 CDK4 hCDK4 Category=organism-gene. protein A cell division protein kinase 4 that is encoded in the genome of human. PR:P11802 cell division protein kinase 4 (human) UniProtKB:P11802