Anti-IGF1 Receptor抗体[3B7] (ab985)

概述

  • 产品名称Anti-IGF1 Receptor抗体[3B7]
    参阅全部 IGF1 Receptor 一抗
  • 描述
    小鼠单克隆抗体[3B7] to IGF1 Receptor
  • 特异性This antibody reacts specifically with the IGF-1 receptor.
  • 经测试应用适用于: Functional Studies, IPmore details
  • 种属反应性
    与反应: Human
  • 免疫原

    Purified human placental IGF-1 receptors

性能

应用

Our Abpromise guarantee covers the use of ab985 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

应用 Ab评论 说明
Functional Studies
IP
  • 应用说明Dilute in PBS or medium which is identical to that used in the assay system.

    This antibody stimulates binding of IGF-1 and -2 to the receptor and stimulates basal and IGF-1 stimulated cell growth.
  • 靶标

    • 功能Receptor tyrosine kinase which mediates actions of insulin-like growth factor 1 (IGF1). Binds IGF1 with high affinity and IGF2 and insulin (INS) with a lower affinity. The activated IGF1R is involved in cell growth and survival control. IGF1R is crucial for tumor transformation and survival of malignant cell. Ligand binding activates the receptor kinase, leading to receptor autophosphorylation, and tyrosines phosphorylation of multiple substrates, that function as signaling adapter proteins including, the insulin-receptor substrates (IRS1/2), Shc and 14-3-3 proteins. Phosphorylation of IRSs proteins lead to the activation of two main signaling pathways: the PI3K-AKT/PKB pathway and the Ras-MAPK pathway. The result of activating the MAPK pathway is increased cellular proliferation, whereas activating the PI3K pathway inhibits apoptosis and stimulates protein synthesis. Phosphorylated IRS1 can activate the 85 kDa regulatory subunit of PI3K (PIK3R1), leading to activation of several downstream substrates, including protein AKT/PKB. AKT phosphorylation, in turn, enhances protein synthesis through mTOR activation and triggers the antiapoptotic effects of IGFIR through phosphorylation and inactivation of BAD. In parallel to PI3K-driven signaling, recruitment of Grb2/SOS by phosphorylated IRS1 or Shc leads to recruitment of Ras and activation of the ras-MAPK pathway. In addition to these two main signaling pathways IGF1R signals also through the Janus kinase/signal transducer and activator of transcription pathway (JAK/STAT). Phosphorylation of JAK proteins can lead to phosphorylation/activation of signal transducers and activators of transcription (STAT) proteins. In particular activation of STAT3, may be essential for the transforming activity of IGF1R. The JAK/STAT pathway activates gene transcription and may be responsible for the transforming activity. JNK kinases can also be activated by the IGF1R. IGF1 exerts inhibiting activities on JNK activation via phosphorylation and inhibition of MAP3K5/ASK1, which is able to directly associate with the IGF1R.
      When present in a hybrid receptor with INSR, binds IGF1. PubMed:12138094 shows that hybrid receptors composed of IGF1R and INSR isoform Long are activated with a high affinity by IGF1, with low affinity by IGF2 and not significantly activated by insulin, and that hybrid receptors composed of IGF1R and INSR isoform Short are activated by IGF1, IGF2 and insulin. In contrast, PubMed:16831875 shows that hybrid receptors composed of IGF1R and INSR isoform Long and hybrid receptors composed of IGF1R and INSR isoform Short have similar binding characteristics, both bind IGF1 and have a low affinity for insulin.
    • 组织特异性Found as a hybrid receptor with INSR in muscle, heart, kidney, adipose tissue, skeletal muscle, hepatoma, fibroblasts, spleen and placenta (at protein level). Expressed in a variety of tissues. Overexpressed in tumors, including melanomas, cancers of the colon, pancreas prostate and kidney.
    • 疾病相关Insulin-like growth factor 1 resistance
    • 序列相似性Belongs to the protein kinase superfamily. Tyr protein kinase family. Insulin receptor subfamily.
      Contains 4 fibronectin type-III domains.
      Contains 1 protein kinase domain.
    • 翻译后修饰Autophosphorylated on tyrosine residues in response to ligand binding. Autophosphorylation occurs in trans, i.e. one subunit of the dimeric receptor phosphorylates tyrosine residues on the other subunit. Autophosphorylation occurs in a sequential manner; Tyr-1165 is predominantly phosphorylated first, followed by phosphorylation of Tyr-1161 and Tyr-1166. While every single phosphorylation increases kinase activity, all three tyrosine residues in the kinase activation loop (Tyr-1165, Tyr-1161 and Tyr-1166) have to be phosphorylated for optimal activity. Can be autophosphorylated at additional tyrosine residues (in vitro). Autophosphorylated is followed by phosphorylation of juxtamembrane tyrosines and C-terminal serines. Phosphorylation of Tyr-980 is required for IRS1- and SHC1-binding. Phosphorylation of Ser-1278 by GSK-3beta restrains kinase activity and promotes cell surface expression, it requires a priming phosphorylation at Ser-1282. Dephosphorylated by PTPN1.
      Polyubiquitinated at Lys-1168 and Lys-1171 through both 'Lys-48' and 'Lys-29' linkages, promoting receptor endocytosis and subsequent degradation by the proteasome. Ubiquitination is facilitated by pre-existing phosphorylation.
      Sumoylated with SUMO1.
      Controlled by regulated intramembrane proteolysis (RIP). Undergoes metalloprotease-dependent constitutive ectodomain shedding to produce a membrane-anchored 52 kDa C-Terminal fragment which is further processed by presenilin gamma-secretase to yield an intracellular 50 kDa fragment.
    • 细胞定位Cell membrane.
    • Information by UniProt
    • 数据库链接
    • 别名
      • CD221 antibody
      • CD221 antigen antibody
      • IGF 1 receptor antibody
      • IGF 1R antibody
      • IGF I receptor antibody
      • IGF-I receptor antibody
      • Igf1r antibody
      • IGF1R_HUMAN antibody
      • IGFIR antibody
      • IGFIRC antibody
      • IGFR antibody
      • Insulin like growth factor 1 receptor antibody
      • Insulin like growth factor 1 receptor precursor antibody
      • Insulin-like growth factor 1 receptor beta chain antibody
      • Insulin-like growth factor I receptor antibody
      • JTK13 antibody
      • MGC142170 antibody
      • MGC142172 antibody
      • MGC18216 antibody
      • Soluble IGF1R variant 1 antibody
      • Soluble IGF1R variant 2 antibody
      see all

    Anti-IGF1 Receptor antibody [3B7] (ab985)参考文献

    This product has been referenced in:
    • Li SL  et al. Two new monoclonal antibodies against the alpha subunit of the human insulin-like growth factor-I receptor. Biochem Biophys Res Commun 196:92-8 (1993). Read more (PubMed: 8216340) »
    • Xiong L  et al. Growth-stimulatory monoclonal antibodies against human insulin-like growth factor I receptor. Proc Natl Acad Sci U S A 89:5356-60 (1992). Read more (PubMed: 1319060) »

    See all 2 Publications for this product

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    Thank you for your enquiry. The concentration of lot 106328 is 0.48 mg/ml. If you have any additional questions, please contact us again.

    Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"