Human polymerase (RNA) II (DNA directed) polypeptide B, 140kDa ELISA Kit | POLR2B elisa kit
Human DNA-directed RNA polymerase II subunit RPB2, POLR2B ELISA Kit
NCBI and Uniprot Product Information
NCBI Description
This gene encodes the second largest subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. This subunit, in combination with at least two other polymerase subunits, forms a structure within the polymerase that maintains contact in the active site of the enzyme between the DNA template and the newly synthesized RNA. [provided by RefSeq, Jul 2008]
Uniprot Description
POLR2B: DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Second largest component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Proposed to contribute to the polymerase catalytic activity and forms the polymerase active center together with the largest subunit. Pol II is the central component of the basal RNA polymerase II transcription machinery. It is composed of mobile elements that move relative to each other. RPB2 is part of the core element with the central large cleft, the clamp element that moves to open and close the cleft and the jaws that are thought to grab the incoming DNA template. Belongs to the RNA polymerase beta chain family.
Protein type: RNA splicing; RNA-binding; Nucleotide Metabolism - purine; EC 2.7.7.6; Transcription initiation complex; RNA processing; Transferase; Nucleotide Metabolism - pyrimidine
Chromosomal Location of Human Ortholog: 4q12
Cellular Component: nucleoplasm; membrane; DNA-directed RNA polymerase II, core complex; nucleus
Molecular Function: protein binding; DNA binding; ribonucleoside binding; metal ion binding; chromatin binding
Biological Process: nuclear mRNA splicing, via spliceosome; transcription from RNA polymerase II promoter; transcription initiation from RNA polymerase II promoter; mRNA capping; viral reproduction; positive regulation of viral transcription; somatic stem cell maintenance; nucleotide-excision repair; transcription-coupled nucleotide-excision repair; RNA splicing; RNA elongation from RNA polymerase II promoter; gene expression; DNA repair