G3BP1 — G3BP stress granule assembly factor 1
G3BP1 belongs to a gene co-expression module in 4 of 28 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
G3BP1's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| Endothelial | Actin Cytoskeletal Remodeling Cytoskeletal | ACTR2, ANKRD11, ARPC4, CAP1, EIF4G1, FYTTD1, GSPT1, IPO7 +8 more | View in SCUBA |
| Gamma-delta T cells | Rho GTPase Signaling Cytoskeletal | APOBR, ARHGEF3, ATP6V1H, BRCC3, CD46, CNDP2, CYB5R4, DCTN5 +14 more | |
| Innate lymphoid cells | RNA Chromatin Regulation RNA processing & translation | ACADM, AURKAIP1, BUD23, CBX3, CMC2, COPB1, DNAJA2, DYNC1LI1 +19 more | View in SCUBA |
| Mucosal-associated invariant T cell | Vesicle Membrane Trafficking Housekeeping | ACSL5, AP2B1, APOBR, CAPRIN1, CAPZA1, DDX23, IARS1, PITPNB +6 more |
About the gene
| Synonyms | G3BP, HDH-VIII |
|---|---|
| Chromosome | 5: 151771045-151812911 |
| Predicted location | Intracellular, Membrane |
| Essential gene | No |
| Protein class | Enzymes, Plasma proteins, Predicted intracellular proteins, Predicted membrane proteins |
| Molecular function | DNA-binding, Endonuclease, Helicase, Hydrolase, Nuclease, RNA-binding |
| Biological process | Host-virus interaction, Immunity, Innate immunity, Transport |
Function
Protein involved in various processes, such as stress granule formation and innate immunity. Plays an essential role in stress granule formation. Stress granules are membraneless compartments that store mRNAs and proteins, such as stalled translation pre-initiation complexes, in response to stress. Promotes formation of stress granules phase-separated membraneless compartment by undergoing liquid-liquid phase separation (LLPS) upon unfolded RNA-binding: functions as a molecular switch that triggers RNA-dependent LLPS in response to a rise in intracellular free RNA concentrations. Also acts as an ATP- and magnesium-dependent helicase: unwinds DNA/DNA, RNA/DNA, and RNA/RNA substrates with comparable efficiency. Acts unidirectionally by moving in the 5' to 3' direction along the bound single-stranded DNA. 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. Plays an essential role in innate immunity by promoting CGAS and RIGI activity. Participates in the DNA-triggered cGAS/STING pathway by promoting the DNA binding and activation of CGAS. Triggers the condensation of cGAS, a process probably linked to the formation of membrane-less organelles. Also enhances RIGI-induced type I interferon production probably by helping RIGI at sensing pathogenic RNA. May also act as a phosphorylation- dependent sequence-specific endoribonuclease in vitro: Cleaves exclusively between cytosine and adenine and cleaves MYC mRNA preferentially at the 3'-UTR.
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.