(RNA-polymerase)-subunit kinase
| RNA polymerase subunit kinase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.7.11.23 | ||||||||
| CAS no. | 122097-00-1 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
In enzymology, a [RNA-polymerase]-subunit kinase (EC 2.7.11.23) is an enzyme that catalyzes the chemical reaction
- ATP + [DNA-directed RNA polymerase] ADP + phospho-[DNA-directed RNA polymerase]
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.
References
- Lee JM, Greenleaf AL (1989). "A protein kinase that phosphorylates the C-terminal repeat domain of the largest subunit of RNA polymerase II". Proc. Natl. Acad. Sci. U.S.A. 86 (10): 3624–8. doi:10.1073/pnas.86.10.3624. PMC 287190. PMID 2657724.