superinduction of rnase activity by actinomycin d is explicable in terms of ( a ) inhibition of synthesis of the mrna coding for a repressor protein that inhibits translation of rnase-specific mrna , or , ( b ) differential stability of mrnas in presence of actinomycin d , and competition among mrnas for factors rate-limiting to translation , thus favoring synthesis of proteins coded by long-lived messengers .
C0033684
protein
C0034861
synthesis