WAF1/CIP1 encodes for p21 and hundreds of other down-stream genes. p21 (WAF1) binds to the G1-S/CDK (CDK4/CDK6, CDK2, and CDK1) complexes (molecules important for the G1/S transition in the cell cycle) inhibiting their activity.
waf1/cip1 encodes for p21 and hundreds of other down-stream genes p21 (waf1) binds to the g1-s/cdk (cdk4/cdk6 cdk2 and cdk1) complexes (molecules important for the g1/s transition in the cell cycle) inhibiting their activity