RNA Polymerase II Subunit A
RNA Polymerase II Subunit B1
POLRA
POLR2
RPB1
DNA-Directed RNA Polymerase II Largest Subunit, RNA Polymerase II 220 Kd Subunit
Polymerase (RNA) II (DNA Directed) Polypeptide A, 220kDa
DNA-Directed RNA Polymerase III Largest Subunit
DNA-Directed RNA Polymerase II Subunit RPB1
RNA-Directed RNA Polymerase II Subunit RPB1
DNA-Directed RNA Polymerase II Subunit A
3'-5' Exoribonuclease
EC 2.7.7.6
Polymerase (RNA) II Subunit A
EC 3.1.13.-
EC 2.7.7.48
HRPB220
NEDHIB
RpIILS
HsRPB1
RPBh1
RPOL2
RPO2
This gene encodes the largest subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. The product of this gene contains a carboxy terminal domain composed of heptapeptide repeats that are essential for polymerase activity. These repeats contain serine and threonine residues that are phosphorylated in actively transcribing RNA polymerase. In addition, this subunit, in combination with several other polymerase subunits, forms the DNA binding domain of the polymerase, a groove in which the DNA template is transcribed into RNA. [provided by RefSeq, Jul 2008]
Forensic Context
A study in human forensic autopsy cases demonstrated that POLR2A serves as a validated and highly stable reference gene for mRNA normalization in postmortem brain tissue analysis [Wang et al. DOI:10.1007/S00414-013-0868-X]. In a separate human study investigating methamphetamine intoxication, POLR2A was similarly employed as part of a validated reference gene set for RT-qPCR analysis, enabling the detection of significant mRNA expression changes in biomarkers associated with blood-brain barrier permeability [Wang et al. DOI:10.1007/S00414-014-0972-6].