InnateDB: Systems Biology of the Innate Immune Response

Homo sapiens Protein: POLR3G

Summary

InnateDB Protein

IDBP-231481.5

Last Modified

2014-10-13 [Report errors or provide feedback]

Gene Symbol

POLR3G

Protein Name

polymerase (RNA) III (DNA directed) polypeptide G (32kD)

Synonyms

RPC32; RPC7;

Species

Homo sapiens

Ensembl Protein

ENSP00000382058

InnateDB Gene

IDBG-33164 (POLR3G)

Protein Structure

UniProt Annotation

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. {ECO:0000269PubMed:19609254, ECO:0000269PubMed:19631370}.

Subcellular Localization

Nucleus {ECO:0000250}.

Disease Associations

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 14 experimentally validated interaction(s) in this database.

Experimentally validated
Total	14 [view]
Protein-Protein	12 [view]
Protein-DNA	2 [view]
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Gene Ontology

Molecular Function

Accession	GO Term
GO:0001056	RNA polymerase III activity
GO:0003899	DNA-directed RNA polymerase activity

Biological Process

GO:0006359	regulation of transcription from RNA polymerase III promoter
GO:0006383	transcription from RNA polymerase III promoter
GO:0006384	transcription initiation from RNA polymerase III promoter
GO:0006385	transcription elongation from RNA polymerase III promoter
GO:0006386	termination of RNA polymerase III transcription
GO:0008283	cell proliferation
GO:0010467	gene expression
GO:0032481	positive regulation of type I interferon production
GO:0032728	positive regulation of interferon-beta production
GO:0045087	innate immune response
GO:0045089	positive regulation of innate immune response
GO:0051607	defense response to virus