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  • MAB1120 - Anti-Insulin-like Growth Factor-1 Receptor Antibody, α-subunit, clone 24-31

MAB1120 Sigma-Aldrich

Anti-Insulin-like Growth Factor-1 Receptor Antibody, α-subunit, clone 24-31

clone 24-31, Chemicon®, from mouse

Synonym: IGF-IR, CD221

  •  eCl@ss 32160702

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, IN-IP, Primary Antibodies
clone   24-31, monoclonal
biological source   mouse
application(s)   immunohistochemistry: suitable (paraffin)
  immunoprecipitation (IP): suitable
species reactivity   human
shipped in   wet ice
isotype   IgG1
Quality Level   100
antibody product type   primary antibodies
mfr. no.   Chemicon®
NCBI accession no.   NM_000875.3
UniProt accession no.   P08069
Gene Information   human ... IGF1R(3480)



Recognizes the alpha-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. 283-440 (exon 4-6) of IGF-1R. Both IGF-1R and insulin receptor are synthesized as a single polypeptide which is glycosylated and proteolytically cleaved to give the alpha- and beta-subunits, which are disulfide-linked in a beta-alpha-alpha-beta configuration in the mature receptor. The a-subunit is completely extracellular, while the beta-subunit spans the membrane and the intracellular portion has intrinsic tyrosine kinase activity. It is assumed that, as for the insulin receptor, the tyrosine kinase activity is essential for IGF-1 action.

Weakly reacts with Rabbit.


IGF-1R/3T3 mouse fibroblasts transfected with human type I IGF-receptor cDNA.


Acts as a Weak IGF-like Agonist in Bioassays (Thymidine incorporation into DNA)

Immunoprecipitation (Use Protein G): 2μg antibody/mg protein lysate.

Immunohistochemistry (Frozen and formalin/paraffin): Use antibody at 2-4ug/mL for 30 min. at room temperature. Staining of formalin-fixed tissues requires boiling tissue sections in 1 mM EDTA, pH 8.0, for 10-20 min. followed by cooling at room temperature for 20 minutes. Please note that EDTA is better than citrate for epitope unmasking.

Optimal working dilutions must be determined by end user.

Anti-Insulin-like Growth Factor-1 Receptor Antibody, α-subunit, clone 24-31 detects level of Insulin-like Growth Factor-1 Receptor & has been published & validated for use in IH(P) & IP.

Research Category

Research Sub Category
Insulin/Energy Signaling

Physical form

Format: Purified

Purified from ascites fluid by Protein G chromatography. Liquid in 10mM PBS, pH 7.4, with 0.2% BSA and 0.09% sodium azide.

Storage and Stability

Maintain refrigerated at 2-8°C in undiluted aliquots for up to 12 months.


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.

Legal Information

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Antibody Basics

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