《英文msh词典》Polymerase,DNA-Directed RNA
[入口词] Polymerase,DNA-Directed RNA
[主题词] DNA-Directed RNA Polymerases
[英文释义] Enzymes that catalyze DNA template-directed extension of the 3'-end of an RNA strand one nucleotide at a time. They can initiate a chain de novo. In eukaryotes,three forms of the enzyme have been distinguished on the basis of sensitivity to alpha-amanitin,and the type of RNA synthesized. (From Enzyme Nomenclature,1992).