Human IGF-I Protein, Fc Tag

Source : 

Human IGF-I, Fc Tag (IG1-H4269) is expressed from human 293 cells (HEK293). It contains AA Gly 49 - Ala 118 (Accession # P05019).

 

Molecule : IGF-I

 

Synonyms : IGF-I,IGF1A,somatomedin C,MGF

 

Format : Powder

 

Category : Cytokines&Growth Factors

 

Accession : N/A

 

Storage : -20℃

 

Shipping condition : Powder,RT

 

Molecular Weight : 34.6 kDa

 

Characteristics :

This protein carries a human IgG1 Fc tag at the N-terminus. The protein has a calculated MW of 34.6 kDa. The protein migrates as 40 kDa under reducing (R) condition (SDS-PAGE).

 

Endotoxin Level : Less than 1.0 EU per μg by the LAL method.

 

Buffer : 50 mM Tris, 100 mM Glycine, pH7.5

 

Description :

Insulin-like growth factor 1 (IGF-1) is also known as somatomedin C, IGF1A, IGFI, sulfation factor, and is a hormone similar in molecular structure to insulin. It plays an important role in childhood growth and continues to have anabolic effects in adults. A synthetic analog of IGF-1, mecasermin is used for the treatment of growth failure. IGF-1 consists of 70 amino acids in a single chain with three intramolecular disulfide bridges. IGF-1 has a molecular weight of 7649 daltons. IGF-1 is produced primarily by the liver as an endocrine hormone as well as in target tissues in a paracrine/autocrine fashion. IGF-1 binds to at least two cell surface receptors: the Insulin-like growth factor 1 receptor, abbreviated as "IGF1R", and the insulin receptor. The IGF-1 receptor seems to be the "physiologic" receptor - it binds IGF-1 at significantly higher affinity than the IGF-1 that is bound to the insulin receptor. Like the insulin receptor, the IGF-1 receptor is a receptor tyrosine kinase - meaning it signals by causing the addition of a phosphate molecule on particular tyrosines. Its primary action is mediated by binding to its specific receptor IGF1R, present on many cell types in many tissues. Binding to the IGF1R, a receptor tyrosine kinase, initiates intracellular signaling; IGF-1 is one of the most potent natural activators of the AKT signaling pathway, a stimulator of cell growth and proliferation, and a potent inhibitor of programmed cell death. Insulin-like growth factor 1 has been shown to bind and interact with all the IGF-1 Binding Proteins (IGFBPs), of which there are six (IGFBP1-6). Specific references are provided for interactions with IGFBP3, IGFBP4 and IGFBP7.

 

References :

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