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  • G6046 - Anti-G3BP antibody produced in rabbit

G6046 Sigma-Aldrich

Anti-G3BP antibody produced in rabbit

~1.0 mg/mL, affinity isolated antibody, buffered aqueous solution

Synonym: Anti-Ras-GTPase-activating protein SH3-domain binding protein 1, Anti-G3BP1, Anti-GAP SH3 domain-binding protein, Anti-HDH-VIII, Anti-human DNA helicase VIII

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Cell Stress, Antibodies for Epigenetics and Nuclear Signaling,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   indirect immunofluorescence: 2-5 μg/mL using human HeLa cells
  western blot: 0.1-0.2 μg/mL using whole extract of human U-2-OS cells
species reactivity   human, mouse (predicted), rat (predicted)
mol wt   antigen ~68 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   affinity isolated antibody
Quality Level   200
antibody product type   primary antibodies
concentration   ~1.0 mg/mL
UniProt accession no.   Q13283
Gene Information   human ... G3BP1(10146)
mouse ... G3bp1(27041)
rat ... G3bp1(171092)


General description

G3BP is a RNA-binding protein that contains a RNA binding domain, the RRM-type domain, at the carboxyl-terminal. The N-terminal domain is homologous to nuclear transporter factor 2 (NTF2) and the central domain is rich in acidic residues. The RRM domain is involved in the binding of G3BP to specific RNA sequences. This helps G3BP to function as a CA dinucleotide-specific endoribonuclease. G3BP′s subcellular localization and protein-protein interactions are mediated by the phosphorylation of G3BP at Ser149, near NTF2-like domain. G3BP is found in abundance in many kinds of malignant tumors such as lung, colon, gastric, and breast cancer.


Anti-G3BP antibody produced in rabbit has been used in co-immunoprecipitation assay.

Anti-G3BP antibody produced in rabbit has been used in
• immunofluorescence analysis
• immunostaining
• immunoblotting
• immunoprecipitation

Target description

G3BP encodes one of the DNA-unwinding enzymes which prefers partially unwound 3′-tailed substrates and can also unwind partial RNA/DNA and RNA/RNA duplexes in an ATP-dependent fashion.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

G3BP (Ras-GTPase-activating protein SH3 domain binding protein 1) is a endoribonuclease that is phosphorylation-dependent and specific to single strand. It cleaves between cytosine and adenine (CA). It binds to the SH3 domain of RasGAP. It forms a link between RasGAP-mediated signaling pathway and RNA turnover. G3BP is required for the assembly of stress granules (SGs), which are involved in the regulation of mRNA metabolism during stress. It may be used as a cytoplasmic SG marker.

Ras-GAP SH3 domain binding protein (G3BP) is overexpressed in many kinds of malignant tumors such as breast, colon, lung and gastric breast cancer. G3BP expression is correlated with lymph node metastasis in breast cancer.

Preparation Note

In immunoblotting assays, it is highly recommended to dilute the antibody in 5% NFDM (w/v).

Safety & Documentation

Safety Information

NONH for all modes of transport
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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Peer-Reviewed Papers


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G8046 Anti-phospho-G3BP (pSer149) antibody produced in rabbit, ~1.0 mg/mL, affinity isolated antibody, buffered aqueous solution

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