Hmdb loader
Identification
HMDB Protein ID HMDBP00744
Secondary Accession Numbers
  • 6019
Name DNA-directed RNA polymerase III subunit RPC7
Synonyms
  1. DNA-directed RNA polymerase III subunit G
  2. RNA polymerase III 32 kDa subunit
  3. RNA polymerase III subunit C7
  4. RPC32
Gene Name POLR3G
Protein Type Enzyme
Biological Properties
General Function Involved in DNA-directed RNA polymerase activity
Specific Function 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. May direct with other members of the RPC3/POLR3C-RPC6/POLR3F-RPC7/POLR3G subcomplex RNA Pol III binding to the TFIIIB-DNA complex via the interactions between TFIIIB and POLR3F. May be involved either in the recruitment and stabilization of the subcomplex within RNA polymerase III, or in stimulating catalytic functions of other subunits during initiation. 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.
Pathways
  • Cytosolic DNA-sensing pathway
  • Epstein-Barr virus infection
  • Purine metabolism
  • Pyrimidine metabolism
  • Pyrimidine metabolism
  • RNA polymerase
Reactions
Adenosine triphosphate + RNA → Pyrophosphate + RNA details
Guanosine triphosphate + RNA → Pyrophosphate + RNA details
Cytidine triphosphate + RNA → Pyrophosphate + RNA details
Uridine triphosphate + RNA → Pyrophosphate + RNA details
GO Classification
Biological Process
termination of RNA polymerase III transcription
transcription elongation from RNA polymerase III promoter
positive regulation of innate immune response
regulation of transcription from RNA polymerase III promoter
positive regulation of interferon-beta production
defense response to virus
innate immune response
Cellular Component
DNA-directed RNA polymerase III complex
Molecular Function
DNA-directed RNA polymerase activity
Cellular Location
  1. Nucleus
Gene Properties
Chromosome Location Not Available
Locus Not Available
SNPs POLR3G
Gene Sequence
>672 bp
ATGGCTGGGAATAAAGGAAGAGGACGTGCTGCTTATACCTTTAATATTGAGGCTGTTGGA
TTTAGCAAAGGTGAAAAGTTACCTGATGTAGTGTTGAAACCACCCCCACTATTTCCTGAT
ACAGATTATAAACCAGTGCCACTGAAAACAGGAGAAGGTGAAGAATATATGCTGGCTTTG
AAACAGGAGTTGAGAGAAACAATGAAAAGAATGCCTTATTTTATTGAAACACCTGAAGAA
AGACAAGATATTGAAAGGTATAGTAAAAGATACATGAAGGTATACAAGGAAGAATGGATA
CCAGATTGGAGAAGACTTCCAAGAGAGATGATGCCAAGAAATAAATGTAAAAAAGCAGGC
CCAAAACCCAAAAAGGCAAAAGACGCAGGCAAAGGCACACCACTCACTAATACTGAAGAT
GTGTTGAAAAAAATGGAGGAATTGGAAAAAAGAGGTGATGGTGAAAAATCAGATGAGGAA
AATGAAGAGAAAGAAGGAAGCAAAGAGAAAAGTAAAGAAGGTGATGATGACGATGACGAT
GATGCCGCAGAACAGGAGGAATATGATGAAGAAGAGCAAGAAGAGGAAAATGACTACATT
AATTCATACTTTGAAGATGGAGATGATTTTGGCGCAGACAGTGATGACAACATGGATGAG
GCAACCTATTAG
Protein Properties
Number of Residues 223
Molecular Weight Not Available
Theoretical pI Not Available
Pfam Domain Function Not Available
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>DNA-directed RNA polymerase III subunit RPC7
MAGNKGRGRAAYTFNIEAVGFSKGEKLPDVVLKPPPLFPDTDYKPVPLKTGEGEEYMLAL
KQELRETMKRMPYFIETPEERQDIERYSKRYMKVYKEEWIPDWRRLPREMMPRNKCKKAG
PKPKKAKDAGKGTPLTNTEDVLKKMEELEKRGDGEKSDEENEEKEGSKEKSKEGDDDDDD
DAAEQEEYDEEEQEEENDYINSYFEDGDDFGADSDDNMDEATY
GenBank ID Protein 115529475
UniProtKB/Swiss-Prot ID O15318
UniProtKB/Swiss-Prot Entry Name RPC7_HUMAN
PDB IDs Not Available
GenBank Gene ID NM_006467.2
GeneCard ID POLR3G
GenAtlas ID POLR3G
HGNC ID HGNC:30075
References
General References
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  2. Dephoure N, Zhou C, Villen J, Beausoleil SA, Bakalarski CE, Elledge SJ, Gygi SP: A quantitative atlas of mitotic phosphorylation. Proc Natl Acad Sci U S A. 2008 Aug 5;105(31):10762-7. doi: 10.1073/pnas.0805139105. Epub 2008 Jul 31. [PubMed:18669648 ]
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  5. Hu P, Wu S, Sun Y, Yuan CC, Kobayashi R, Myers MP, Hernandez N: Characterization of human RNA polymerase III identifies orthologues for Saccharomyces cerevisiae RNA polymerase III subunits. Mol Cell Biol. 2002 Nov;22(22):8044-55. [PubMed:12391170 ]
  6. Chiu YH, Macmillan JB, Chen ZJ: RNA polymerase III detects cytosolic DNA and induces type I interferons through the RIG-I pathway. Cell. 2009 Aug 7;138(3):576-91. doi: 10.1016/j.cell.2009.06.015. Epub 2009 Jul 23. [PubMed:19631370 ]
  7. Ablasser A, Bauernfeind F, Hartmann G, Latz E, Fitzgerald KA, Hornung V: RIG-I-dependent sensing of poly(dA:dT) through the induction of an RNA polymerase III-transcribed RNA intermediate. Nat Immunol. 2009 Oct;10(10):1065-72. doi: 10.1038/ni.1779. Epub 2009 Jul 16. [PubMed:19609254 ]
  8. Wang Z, Roeder RG: Three human RNA polymerase III-specific subunits form a subcomplex with a selective function in specific transcription initiation. Genes Dev. 1997 May 15;11(10):1315-26. [PubMed:9171375 ]