Description
General description
IGF-I and -II signal through the IGF-I Receptor, which is homologous to the Insulin Receptor. The high-affinity IGF-II Receptor does not play a direct role in signaling, but regulates the concentration of free IGF-II. The IGFs are involved in skeletal growth, and are essential for prevention of apoptosis. Serum levels of free IGFs are kept low by the action of IGF binding proteins (IGFBPs), which sequester the IGFs. Overexpression of IGFBPs may induce apoptosis, presumably by reduction of free IGF; IGFBP levels are also altered in some cancers. The IGF-I Receptor is not as mitogenic as some other growth factor receptors, but its ability to activate the PI3 Kinase pathway, through the Insulin Receptor Substrate (IRS) proteins, is critical for mediating cell survival.
Recognizes the beta-subunit of type I Insulin-like Growth Factor Receptor (IGF-1R; ~140 kDa)
Immunogen
A 15-mer peptide corresponding to a.a. 1323-1337 (Tyr-RKNERALPLPQSSTC) from the C-terminal of β-subunit of human IGF-1R.
Epitope: Between a.a. 1323-1337 of IGF-1R
Application
Anti-IGF-IR Antibody, β-subunit, clone 1-2 is an antibody against IGF-IR for use in WB, IH(P).
Immunohistochemistry(paraffin): Representative images from a previous lot.
Optimal Staining of IGF Monoclonal Antibody: Placenta
Western Blot: A previous lot of this antibody was used at 1-2 µg/mL for 2 hours at room temperature.
Optimal working dilutions must be determined by end user.
Research Category
Signaling
Apoptosis & Cancer
Research Sub Category
Insulin/Energy Signaling
Biochem/physiol Actions
Recognizes the β-subunit of type I Insulin-like Growth Factor Receptor (IGF-1R). It shows no cross-reaction with insulin receptor. Its epitope localizes between a.a. 1323-1337 of IGF-1R. Both IGF-1R and insulin receptor are synthesized as a single polypeptide which is glycosylated and proteolytically cleaved to give the α- and β-subunits, which are disulfide-linked in a β-α-α-β configuration in the mature receptor. The α-subunit is completely extracellular, while the β-subunit spans membrane.
Physical form
Affinity purified
Purified mouse monoclonal IgG2b in 10mM PBS, pH 7.4, with 0.2% BSA and 0.09% sodium azide.
Preparation Note
Stable at 2-8°C in undiluted aliquots for up to 1 year from date of receipt.
Analysis Note
Control
C2C12 Cell Lysate
Routinely evaluated by Western Blot on C2C12 lysates.
Western Blot Analysis: 1:500 dilution of this lot detected IGF-1 Receptor beta on 10 μg of C2C12 lysates.
Other Notes
Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.
Replaces: MAB1123
Disclaimer
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.
