Rabbit anti-Human POLR3B Polyclonal Antibody

Uniprot Id

Q9NW08

Target Species

Human

Target Name

POLR3B

Target Full Name

DNA-directed RNA polymerase III subunit RPC2

Target Function

DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Second largest core component of RNA polymerase III which synthesizes small RNAs, such as 5S rRNA and tRNAs. Proposed to contribute to the polymerase catalytic activity and forms the polymerase active center together with the largest subunit. Pol III is composed of mobile elements and RPC2 is part of the core element with the central large cleft and probably a clamp element that moves to open and close the cleft. Plays a key role in sensing and limiting infection by intracellular bacteria and DNA viruses. Acts as nuclear and cytosolic DNA sensor involved in innate immune response. Can sense non-self dsDNA that serves as template for transcription into dsRNA. The non-self RNA polymerase III transcripts, such as Epstein-Barr virus-encoded RNAs (EBERs) induce type I interferon and NF- Kappa-B through the RIG-I pathway.

Target Involvement

Leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism (HLD8)

Target Subcellular Location

Nucleus.

Target Protein Families

RNA polymerase beta chain family

Target Synonyms

C128; DNA directed RNA polymerase III 127.6 kDa polypeptide; DNA directed RNA polymerase III subunit B; DNA-directed RNA polymerase III 127.6 kDa polypeptide; DNA-directed RNA polymerase III subunit B; DNA-directed RNA polymerase III subunit RPC2; FLJ10388; polr3b; Polymerase (RNA) III (DNA directed) polypeptide B; RNA polymerase III subunit C2; RNA polymerase III subunit RPC2; RPC2; RPC2_HUMAN

Target Background

This gene encodes the second largest subunit of RNA polymerase III, the polymerase responsible for synthesizing transfer and small ribosomal RNAs in eukaryotes. The largest subunit and the encoded protein form the catalytic center of RNA polymerase III. Mutations in this gene are a cause of hypomyelinating leukodystrophy. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene.