Aliases for POLR3A Gene
External Ids for POLR3A Gene
The protein encoded by this gene is the catalytic component of RNA polymerase III, which synthesizes small RNAs. The encoded protein also acts as a sensor to detect foreign DNA and trigger an innate immune response. [provided by RefSeq, Aug 2011]
GeneCards Summary for POLR3A Gene
POLR3A (Polymerase (RNA) III (DNA Directed) Polypeptide A, 155kDa) is a Protein Coding gene. Diseases associated with POLR3A include leukodystrophy, hypomyelinating, 7, with or without oligodontia and/or hypogonadotropic hypogonadism and pol iii-related leukodystrophies. Among its related pathways are Epstein-Barr virus infection and Metabolism. GO annotations related to this gene include chromatin binding and RNA polymerase III activity.
UniProtKB/Swiss-Prot for POLR3A Gene
DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic core component of RNA polymerase III which synthesizes small RNAs, such as 5S rRNA and tRNAs. Forms the polymerase active center together with the second largest subunit. A single-stranded DNA template strand of the promoter is positioned within the central active site cleft of Pol III. A bridging helix emanates from RPC1 and crosses the cleft near the catalytic site and is thought to promote translocation of Pol III by acting as a ratchet that moves the RNA-DNA hybrid through the active site by switching from straight to bent conformations at each step of nucleotide addition (By similarity). 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.