DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Specific peripheric component of RNA polymerase III which synthesizes small RNAs, such as 5S rRNA and tRNAs. 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 induce type I interferon and NF- Kappa-B through the RIG-I pathway.
Specificity
Natural and recombinant Bovine DNA-directed RNA polymerase III subunit RPC9
Subcellular Location
Nucleus Cell membrane Peripheral membrane protein Cytoplasmic side
Component of the RNA polymerase III (Pol III) complex consisting of 17 subunits. Interacts with POLR3H/RPC8. POLR3H/RPC8 and CRCP/RPC9 probably form a Pol III subcomplex.