| RNA polymerase subunit kinase | |
| Ec Number: | 2.7.11.23 |
| Cas Number: | 122097-00-1 |
| Go Code: | 0008353 |
In enzymology, an [RNA-polymerase]-subunit kinase is an enzyme that catalyzes the chemical reaction
ATP + [DNA-directed RNA polymerase]
\rightleftharpoons
Thus, the two substrates of this enzyme are ATP and DNA-directed RNA polymerase, whereas its two products are ADP and phospho-DNA-directed RNA polymerase.
This enzyme belongs to the family of transferases, specifically those transferring a phosphate group to the sidechain oxygen atom of serine or threonine residues in proteins (protein-serine/threonine kinases). The systematic name of this enzyme class is ATP:[DNA-directed RNA polymerase] phosphotransferase. Other names in common use include CTD kinase, and STK9.