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Western Blot Analysis
Representative lot data
NIH3T3 cell lysate was probed with Anti-IRS1 (0.56 ug/mL). Proteins were visualized us...
Anti-IRS1
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H, M, R | IP, WB | Rabbit | Affinity Purified | Polyclonal Antibody |
Description:
Anti-IRS1
Trade Name:
Upstate (Millipore)
Specificity:
Recognizes IRS1, Mr 160-185kDa..
Molecular Weight:
165 kDa
Immunogen:
Carboxy-terminal 14 amino acid peptide ([C]YASINFQKQPEDRQ) of rat liver IRS1
Isotype:
IgG
Background Information:
Insulin receptor substrate (IRS) molecules are key mediators in insulin signaling and play a central role in maintaining basic cellular functions such as growth, survival, and metabolism. They act as docking proteins between the insulin receptor and a complex network of intracellular signaling molecules containing Src homology 2 (SH2) domains. Four members (IRS-1, IRS-2, IRS-3, IRS-4) of this family have been identified that differ as to tissue distribution, subcellular localization, developmental expression, binding to the insulin receptor, and interaction with SH2 domain-containing proteins. Results from targeted disruption of the IRS genes in mice have provided important clues to the functional differences among these related molecules, suggesting they play different and specific roles in vivo. The available data are consistent with the notion that IRS-1 and IRS-2 are not functionally interchangeable in tissues that are responsible for glucose production (liver), glucose uptake (skeletal muscle and adipose tissue), and insulin production (pancreatic β cells). In fact, IRS-1 appears to have its major role in skeletal muscle whereas IRS-2 appears to regulate hepatic insulin action as well as pancreatic β cell development and survival. By contrast, IRS-3 and IRS-4 genes appear to play a redundant role in the IRS signaling system. Defects in muscle IRS-1 expression and function have been reported in insulin-resistant states such as obesity and type 2 diabetes.
Species Reactivity:
- Human
- Mouse
- Rat
Control:
Included Positive Antigen Control: Catalog # 12-305, 3T3/A31 Cell Lysate. Use 20 µg per lane for minigels.
Quality Assurance:
Routinely evaluated by Western Blot on NIH3T3 cell lysate.
Purification Method:
Immunoaffinity purified
Presentation:
Purified Rabbit IgG in buffer containing 0.2 M Trisglycine, pH 7.4, 0.15 M NaCl, 0.1 mM EDTA, 5 mg/mL BSA, and 0.05% sodium azide.
Storage Conditions:
Maintain for 1 year at -20°C from date of shipment. Aliquot to avoid repeated freezing and thawing. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
UniProt Number:
Entrez Gene Number:
Gene Symbol:
- IRS1
- IRS-1
- HIRS-1
Usage Statement:
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.
Key Applications:
- Immunoprecipitation
- Western Blotting
UniProt Summary:
FUNCTION: SwissProt: P35568 # May mediate the control of various cellular processes by insulin. When phosphorylated by the insulin receptor binds specifically to various cellular proteins containing SH2 domains such as phosphatidylinositol 3-kinase p85 subunit or GRB2. Activates phosphatidylinositol 3-kinase when bound to the regulatory p85 subunit (By similarity).
SIZE: 1242 amino acids; 131591 Da
SUBUNIT: Interacts with the NPXY motif of tyrosine-phosphorylated IGF1R and INSR via the PTB domain. Binds to phosphatidylinositol 3-kinase p85 subunit via the phosphorylated YXXM motifs. Binds ROCK1. Binds to UBTF and PIK3CA in nuclear extracts (By similarity). Interacts with SOCS7.
PTM: Serine phosphorylation of IRS1 is a mechanism for insulin resistance. Ser-312 phosphorylation inhibits insulin action through disruption of IRS1 interaction with the insulin receptor (By similarity). & Phosphorylation of Tyr-896 is required for GRB2-binding (By similarity).DISEASE:SwissProt: P35568 # Polymorphisms in IRS1 may be involved in the etiology of non-insulin-dependent diabetes mellitus (NIDDM) [MIM:125853].
SIMILARITY: SwissProt: P35568 ## Contains 1 IRS-type PTB domain. & Contains 1 PH domain.
SIZE: 1242 amino acids; 131591 Da
SUBUNIT: Interacts with the NPXY motif of tyrosine-phosphorylated IGF1R and INSR via the PTB domain. Binds to phosphatidylinositol 3-kinase p85 subunit via the phosphorylated YXXM motifs. Binds ROCK1. Binds to UBTF and PIK3CA in nuclear extracts (By similarity). Interacts with SOCS7.
PTM: Serine phosphorylation of IRS1 is a mechanism for insulin resistance. Ser-312 phosphorylation inhibits insulin action through disruption of IRS1 interaction with the insulin receptor (By similarity). & Phosphorylation of Tyr-896 is required for GRB2-binding (By similarity).DISEASE:SwissProt: P35568 # Polymorphisms in IRS1 may be involved in the etiology of non-insulin-dependent diabetes mellitus (NIDDM) [MIM:125853].
SIMILARITY: SwissProt: P35568 ## Contains 1 IRS-type PTB domain. & Contains 1 PH domain.
Qty/Pk:
100 μg
Brand Family:
Upstate
Format:
Affinity Purified
Host:
Rabbit
Product Name:
Anti-IRS1
Concentration:
0.28 mg/mL
Antibody Type:
Polyclonal Antibody