RNA Polymerase II, DNA Directed Polypeptide E (POLR2E)

POLR2E encodes the fifth largest subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. This subunit is shared by the other two DNA-directed RNA polymerases and is present in two-fold molar excess over the other polymerase subunits. An interaction between this subunit and a hepatitis virus transactivating protein has been demonstrated, suggesting that interaction between transcriptional activators and the polymerase can occur through this subunit. A pseudogene is located on chromosome 11.A second site of hybridization to 11q23.1 was thought to represent a pseudogene, most likely a retroposon, since no remnants of introns could be identified in the study of genomic DNA.