p53 and p21/Cip1 , respectively , inhibit the expression and activation of PCNA , whereas p130 and pRb , respectively , inhibit the expression and activation of E2F1 .
p53 and p21/cip1 , respectively , inhibit the expression and activation of pcna , whereas p130 and prb , respectively , inhibit the expression and activation of e2f1 .
B-protein_molecule O B-protein_molecule O O O O O O O O O B-protein_molecule O O B-protein_molecule O B-protein_molecule O O O O O O O O O B-protein_molecule O