FEATURES

DESCRIPTION

Also known as G3BP1_HUMAN, G3BP1, G3BP. ATP- and magnesium-dependent helicase that plays an essential role in innate immunity (PubMed:30510222). Participates in the DNA-triggered cGAS/STING pathway by promoting the DNA binding and activation of CGAS. Enhances also DDX58-induced type I interferon production probably by helping DDX58 at sensing pathogenic RNA (PubMed:30804210). In addition, plays an essential role in stress granule formation (PubMed:12642610, PubMed:20180778, PubMed:23279204). Unwinds preferentially partial DNA and RNA duplexes having a 17 bp annealed portion and either a hanging 3' tail or hanging tails at both 5'- and 3'-ends (PubMed:9889278). Unwinds DNA/DNA, RNA/DNA, and RNA/RNA substrates with comparable efficiency (PubMed:9889278). Acts unidirectionally by moving in the 5' to 3' direction along the bound single-stranded DNA (PubMed:9889278). Phosphorylation-dependent sequence-specific endoribonuclease in vitro (PubMed:11604510). Cleaves exclusively between cytosine and adenine and cleaves MYC mRNA preferentially at the 3'-UTR (PubMed:11604510). Homodimer and oligomer (PubMed:12642610, PubMed:24324649). Component of a TAU mRNP complex, at least composed of IGF2BP1, ELAVL4 and G3BP1 (By similarity). Binds to the SH3 domain of Ras GTPase-activating protein (RASA1) in proliferating cells (By similarity). No interaction in quiescent cells (By similarity). Interacts (via NTF2-like domain) with USP10 (PubMed:11439350, PubMed:23279204). Interacts with RPTOR and SPAG5; this complex is increased by oxidative stress (PubMed:23953116). Interacts with ATXN2L (PubMed:23209657). Interacts with STYXL1 (PubMed:20180778). Interacts with CGAS (via N-terminus); this interaction promotes the DNA-binding and activation of CGAS (PubMed:30510222). Interacts (via C-terminus) with DDX58 (PubMed:30804210). Interacts (via NTF2-like domain) with CAPRIN1 (PubMed:17210633). Interacts with PABPC1 (PubMed:23279204).

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EXTERNAL LINKS

G3BP1

Ras GTPase-activating protein-binding protein 1

ligandability Mutations

G3BP1

Molecular Synopsis