Insulin-like growth factor 1 (IGF-1) is a polypeptide protein hormone similar in molecular structure to insulin. It plays an important role in childhood growth and continues to have anabolic effects in adults. IGF-1 consists of 70 amino acids in a single chain with three intramolecular disulfide bridges. IGF-1 is produced primarily by the liver as an endocrine hormone and targets tissues in a paracrine/ autocrine fashion. Production is stimulated by growth hormone and can be retarded by undernutrition, growth hormone insensitivity, lack of growth hormone receptors, or failures of the downstream signaling pathway post GH receptor including SHP2 and STAT5b. Approximately 98% of IGF-1 is always bound to one of 6 binding proteins (IGF-BP). IGFBP-3, the most abundant protein, accounts for 80% of all IGF binding. IGF-1 binds to IGFBP-3 in a 1:1 molar ratio. Its primary action is mediated by binding to specific IGF receptors present on many cell types in many tissues. The signal is transduced by intracellular events. IGF-1 is one of the most potent natural activators of the AKT signaling pathway, a stimulator of cell growth and multiplication and a potent inhibitor of programmed cell death.

Suitable for use in Western Blot, Immunoprecipitation, Neutralization and Immunohistochemistry. Other applications not tested.

Immunohistochemistry: Formalin-fixed, paraffin-embedded skin sections. Optimal dilutions to be determined by the researcher.

Store product at 4°C in the dark. DO NOT FREEZE! Stable at 4°C for 12 months after receipt as an undiluted liquid. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Caution: MaxLight™650 conjugates are sensitive to light. For maximum recovery of product, centrifuge the original vial prior to removing the cap.

Note: Applications are based on unconjugated antibody.

Human insulin-like growth factor I (IGF1) purified from human plasma. Species Sequence Homology: chicken

Supplied as a liquid in PBS, pH 7.2. No preservative added. Labeled with MaxLight™650.

Purified by Protein G affinity chromatography.

Recognizes human Insulin-Like Growth Factor I (IGF1), Mr ~17kD (migrates to ~7kD). Crossreactivity with IGF-II is ~40%. |Species Crossreactivity: mouse and rat. Occasional difficulty neutralizing rat IGF1 due to binding protein interference.