deoxyribonucleic acid-directed ribonucleic acid polymerase [dē¦äk·sē´rī·bō·nü¦klē·ik ¦as·ǝd dǝ`rek·tǝd ¦rī·bō·nü¦kle·ik ¦as·ǝd pǝ`lim·ǝ´rās] BIOCHEMISTRY An enzyme which transcribes a ribonucleic acid (RNA) molecule complementary to deoxyribonucleic acid (DNA); required for initiation of DNA replication as well as transcription of RNA. |