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The insulin-like growth factor 1 (IGF-1) receptor is a protein found on the surface of human cells. It is a transmembrane receptor that is activated by a hormone called insulin-like growth factor 1 (IGF-1) and by a related hormone called IGF-2. It belongs to the large class of tyrosine kinase receptors. This receptor mediates the effects of IGF ...
This system consists of three ligands (insulin, IGF-1 and IGF-2), two tyrosine kinase receptors (insulin receptor and IGF-1R receptor) and six ligand binding proteins (IGFBP 1–6). [28] Together they play an essential role in proliferation , survival , regulation of cell growth and affect almost every organ system in the body.
Like the insulin receptor, the IGF-1 receptor is a receptor tyrosine kinase—meaning the receptor signals by causing the addition of a phosphate molecule on particular tyrosines. The IGF-2 receptor only binds IGF-2 and acts as a "clearance receptor"—it activates no intracellular signaling pathways, functioning only as an IGF-2 sequestering ...
The insulin receptor (IR) is a transmembrane receptor that is activated by insulin, IGF-I, IGF-II and belongs to the large class of receptor tyrosine kinase. [5] Metabolically, the insulin receptor plays a key role in the regulation of glucose homeostasis; a functional process that under degenerate conditions may result in a range of clinical manifestations including diabetes and cancer.
The insulin-like growth factor receptors (IGFRs) include the following two receptors: Insulin-like growth factor 1 receptor (IGF-1R) Insulin-like growth factor 2 receptor (IGF-2R) See also. Insulin-like growth factor; Insulin-like growth factor 1; Insulin-like growth factor 2; Insulin-like growth factor-binding protein; References
DAF-2 is the only member of the insulin receptor family in C. elegans but it corresponds, in form and function, to multiple pathways in humans. The protein predicted from DAF-2's sequence is 35% identical to the human insulin receptor, which regulates metabolism; 34% identical to the IGF-1 receptor, which regulates growth; and 33% identical to ...
Long arginine 3-IGF-1, abbreviated as IGF-1 LR3 or LR3-IGF-1, is a synthetic protein and lengthened analogue of human insulin-like growth factor 1 (IGF-1). [1] [2] It differs from native IGF-1 in that it possesses an arginine instead of a glutamic acid at the third position in its amino acid sequence ("arginine 3"), and also has an additional 13 amino acids at its N-terminus (MFPAMPLLSLFVN ...
One of the known target genes of androgen receptor activation is the insulin-like growth factor 1 receptor (IGF-1R). [26] Thus, changes in levels of specific proteins in cells is one way that androgen receptors control cell behavior.
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