IGF2: The insulin-like growth factors possess growth-promoting activity. In vitro, they are potent mitogens for cultured cells. IGF-II is influenced by placental lactogen and may play a role in fetal development. Epigenetic changes of DNA hypomethylation in IGF2 are a cause of Silver-Russell syndrome (SRS). A clinically heterogeneous condition characterized by severe intrauterine growth retardation, poor postnatal growth, craniofacial features such as a triangular shaped face and a broad forehead, body asymmetry, and a variety of minor malformations. The phenotypic expression changes during childhood and adolescence, with the facial features and asymmetry usually becoming more subtle with age. Belongs to the insulin family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Secreted, signal peptide; Secreted
Chromosomal Location of Human Ortholog: 11p15.5
Cellular Component: extracellular space; plasma membrane; extracellular region
Molecular Function: insulin-like growth factor receptor binding; protein serine/threonine kinase activator activity; protein binding; growth factor activity; hormone activity; receptor activator activity; insulin receptor binding
Biological Process: positive regulation of catalytic activity; response to nicotine; genetic imprinting; multicellular organismal development; positive regulation of glycogen biosynthetic process; exocrine pancreas development; female pregnancy; positive regulation of activated T cell proliferation; response to estradiol stimulus; response to radiation; platelet degranulation; positive regulation of MAPKKK cascade; regulation of transcription, DNA-dependent; positive regulation of cell proliferation; skeletal development; response to drug; response to nutrient levels; platelet activation; positive regulation of mitosis; glucose metabolic process; memory; osteoblast differentiation; positive regulation of protein kinase B signaling cascade; organ morphogenesis; positive regulation of peptidyl-tyrosine phosphorylation; response to ethanol; cellular protein metabolic process; insulin receptor signaling pathway; striated muscle cell differentiation; positive regulation of transcription from RNA polymerase II promoter; positive regulation of protein amino acid phosphorylation; positive regulation of insulin receptor signaling pathway; blood coagulation
Disease: Silver-russell Syndrome; Growth Restriction, Severe, With Distinctive Facies; Beckwith-wiedemann Syndrome; Wilms Tumor 1
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