Cell Signaling Technology

Product Pathways - Tyrosine Kinase / Adaptors

Phospho-Gab1 (Tyr307) Antibody #3234

GRB-associated-binder   GRB-associated-binder-1   GRB-associated-binding-protein-1   GRB2-associated-binder   GRB2-associated-binder-1   GRB2-associated-binding-protein-1  

No. Size Price
3234S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
3234T 20 µl ( 2 western blots ) ¥1,500.00 现货查询 购买询价
3234 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse, Endogenous 115 Rabbit

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting,

Specificity / Sensitivity

Phospho-Gab1 (Tyr307) Antibody detects endogenous levels of Gab1 only when phosphorylated at tyrosine 307. The antibody cross-reacts with phosphorylated Gab2 and may also cross-react with phosphorylated Gab3. The antibody may cross-react with activated receptor tyrosine kinases (RTKs).

Phospho-Gab1 (Tyr307) Antibody 能够检测酪氨酸(307位点)磷酸化的内源性Gab1蛋白。抗体与磷酸化的Gab2及可能还有磷酸化的Gab3交叉反应。抗体也可能于活化的受体酪氨酸激酶(RTKs)交叉反应。

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr307 of human Gab1. Antibodies are purified by protein A and peptide affinity chromatography.

该多克隆抗体是由合成与人源Gab1蛋白酪氨酸(307位点)周围序列相对应的磷酸化肽段免疫动物而生产的。抗体由protein A和肽亲和层析技术纯化。

Western Blotting

Western Blotting

Western blot analysis of extracts from HEK293 cells, untreated or treated with In1B for indicated times, using Phospho-Gab1 (Tyr307) Antibody (upper) or Gab1 Antibody #3232 (lower).

Western blot 检测分析HEK293细胞提取物,未处理的和用 In1B处理特定时间的;使用的抗体是 Phospho-Gab1 (Tyr307) Antibody(上图)和Gab1 Antibody #3232 (下图)。


The Grb-associated binder (Gab) family is a family of adaptor proteins recruited by a wide variety of receptor tyrosine kinases (RTKs) such as EGFR, HGFR, insulin receptor, cytokine receptor and B cell antigen receptors. Upon stimulation of RTKs by their cognate ligand, Gab is recruited to the plasma membrane where it is phosphorylated and functions as a scaffold (1-4). Multiple tyrosine phosphorylation sites of Gab1 protein have been identified (5). Phosphorylation of Tyr472 regulates its binding to p85 PI3 kinase (6,7). Phosphorylation of Gab1 at Tyr307, Tyr373 and Tyr407 modulates its association to PLCγ (8). Phosphorylation of Tyr627 and Tyr659 is required for Gab1 binding to and activation of the protein tyrosine phosphatase SHP2 (6,9).


  1. Holgado-Madruga, M. et al. (1996) Nature 379, 560-564.
  2. Weidner, K.M. et al. (1996) Nature 384, 173-176.
  3. Takahashi-Tezuka, M. et al. (1998) Mol. Cell. Biol. 18, 4109-4117.
  4. Ingham, R.J. et al. (2001) J Biol Chem 276, 12257-65.
  5. Lehr, S. et al. (1999) Biochemistry 38, 151-159.
  6. Rocchi, S. et al. (1998) Mol. Endocrinol. 12, 914-923.
  7. Yu, C.F. et al. (2001) J Biol Chem 276, 32552-8.
  8. Gual, P. et al. (2000) Oncogene 19, 1509-18.
  9. Cunnick, J.M. et al. (2001) J Biol Chem 276, 24380-7.

Application References

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