Cell Signaling Technology

Product Pathways - Tyrosine Kinase / Adaptors

Phospho-Met (Tyr1349) Antibody #3121

c-met   hepacytic-growth-factor-receptor   HGF-receptor   HGF-SF-receptor   HGF/SF-receptor   HGFR   met-proto-oncogene-tyrosine-kinase   scatter-factor-receptor   SF-receptor  

No. Size Price
3121S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
3121 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse,Rat, Endogenous 145 Rabbit
IP 1:50

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, IP=Immunoprecipitation,

Specificity / Sensitivity

Phospho-Met (Tyr1349) Antibody detects endogenous levels of Met only when phosphorylated at tyrosine 1349. This antibody may cross-react with activated EGF, PDGF, insulin and FGF receptors.

磷酸化Met (Tyr1349)抗体仅在Tyr1349被磷酸化后才能检测到内源Met的表达。本抗体可能与激活的EGF, PDGF, 胰岛素以及 FGF受体有交叉反应。

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr1349 of human Met. Antibodies are purified by protein A and peptide affinity chromatography.

多克隆抗体通过用多肽免疫动物得到,该多肽是根据人的Met蛋白Tyr1349附近的氨基酸序列合成的。抗体经过protein A和亲和层析纯化。

Western Blotting

Western Blotting

Western blot analysis of extracts from mIMCD-3 cells, untreated or HGF-stimulated (40 ng/ml for 2 minutes), using Phospho-Met (Tyr1349) Antibody (upper) or Met antibody (lower).用抗体Phospho-Met (Tyr1349) Antibody (上)或 Met antibody (下)对未处理的或HGF (40 ng/ml ,2 minutes)刺激过的mIMCD-3细胞的提取物进行免疫印迹检测。

Western Blotting

Western Blotting

Western blot analysis of extracts from Vero cells, treated with In1B (3 nM) for the indicated times, using Phospho-Met (Tyr1349) Antibody (upper) or Met antibody (lower). In1B is a c-Met activator (Shen, Y. et al. 2000, Cell 103, 501-510). (In1B provided by Dr. K. Ireton, University of Toronto, Canada.)用抗体Phospho-Met (Tyr1349) Antibody (上)或 Met antibody (下)对In1B (3 nM)处理过的Vero细胞的提取物进行免疫印迹检测,细胞处理时间详见注释。In1B是 c-Met 激活剂 (Shen, Y. et al. 2000, Cell 103, 501-510)。 (In1B 由Dr. K. Ireton, University of Toronto, Canada提供)。


Met, a high affinity tyrosine kinase receptor for hepatocyte growth factor (HGF, also known as scatter factor) is a disulfide-linked heterodimer made of 45 kDa α- and 145 kDa β-subunits (1,2). The α-subunit and the amino-terminal region of the β-subunit form the extracellular domain. The remainder of the β-chain spans the plasma membrane and contains a cytoplasmic region with tyrosine kinase activity. Interaction of Met with HGF results in autophosphorylation at multiple tyrosines, which recruit several downstream signaling components, including Gab1, c-Cbl, and PI3 kinase (3). These fundamental events are important for all of the biological functions involving Met kinase activity. The addition of a phosphate at cytoplasmic Tyr1003 is essential for Met protein ubiquitination and degradation (4). Phosphorylation at Tyr1234/1235 in the Met kinase domain is critical for kinase activation. Phosphorylation at Tyr1349 in the Met cytoplasmic domain provides a direct binding site for Gab1 (5). Altered Met levels and/or tyrosine kinase activities are found in several types of tumors, including renal, colon, and breast. Thus, Met is an attractive cancer therapeutic and diagnostic target (6,7).

Met作为肝细胞生长因子 (HGF, 亦作扩散因子) 的高亲和性酪氨酸激酶受体是一个二硫键连接的异二聚体,含有一个45 kDa的 α-亚基和一个145 kDa的 β-亚基 (1,2)。α-亚基和β-亚基的氨基端形成胞外区,β-亚基的其余部分跨细胞膜并且含有一个具有激酶活性的胞内区。Met和HGF相互作用会导致多个酪氨酸位点的自磷酸化,继而招募下游信号分子Gab1, c-Cbl和 PI3 K激酶(3)。这一系列基础性事件对于Met激酶相关的所有生物学功能十分重要。胞内Tyr1003位点的磷酸化对于Met的泛素化和降解是必须的(4)。激酶结构域Tyr1234/1235的磷酸化对于Met的激酶活性十分关键。胞内 Tyr1349的磷酸化为Met提供了Gab1 的直接结合位点(5)。在肾、结肠和乳腺癌中发现有Met水平和/或激酶活性的改变,因此Met是肿瘤治疗和诊断的一个靶点(6,7)。

  1. Cooper, C.S. et al. (1984) Nature 311, 29-33.
  2. Bottaro, D.P. et al. (1991) Science 251, 802-4.
  3. Bardelli, A. et al. (1997) Oncogene 15, 3103-11.
  4. Taher, T.E. et al. (2002) J Immunol 169, 3793-800.
  5. Schaeper, U. et al. (2000) J Cell Biol 149, 1419-32.
  6. Eder, J.P. et al. (2009) Clin Cancer Res 15, 2207-14.
  7. Sattler, M. and Salgia, R. (2009) Update Cancer Ther 3, 109-118.

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