(RNA-polymerase)-subunit kinase

In enzymology, an [RNA-polymerase]-subunit kinase () is an enzyme that catalysis, catalyzes the chemical reaction

:ATP + [DNA-directed RNA polymerase] $\rightleftharpoons$ ADP + phospho-[DNA-directed RNA polymerase]

Thus, the two substrate (biochemistry), substrates of this enzyme are adenosine triphosphate, ATP and DNA-directed RNA polymerase, whereas its two product (chemistry), products are adenosine diphosphate, 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 List of enzymes, systematic name of this enzyme class is ATP:[DNA-directed RNA polymerase] phosphotransferase. Other names in common use include CTD kinase, and STK9.

References

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EC 2.7.11
Enzymes of unknown structure

{{2.7-enzyme-stub