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Heparin-binding EGF-like growth factor
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Heparin-binding EGF-like growth factor : ウィキペディア英語版
Heparin-binding EGF-like growth factor

Heparin-binding EGF-like growth factor (HB-EGF) is a member of the EGF family of proteins that in humans is encoded by the ''HBEGF'' gene.
HB-EGF-like growth factor is synthesized as a membrane-anchored mitogenic and chemotactic glycoprotein. An epidermal growth factor produced by monocytes and macrophages, due to an affinity for heparin is termed HB-EGF. It has been shown to play a role in wound healing, cardiac hypertrophy, and heart development and function. First identified in the conditioned media of human macrophage-like cells, HB-EGF is an 87-amino acid glycoprotein that displays highly regulated gene expression. Ectodomain shedding results in the soluble mature form of HB-EGF, which influences the mitogenicity and chemotactic factors for smooth muscle cells and fibroblasts. The transmembrane form of HB-EGF is the unique receptor for diphtheria toxin and functions in juxtacrine signaling in cells. Both forms of HB-EGF participate in normal physiological processes and in pathological processes including tumor progression and metastasis, organ hyperplasia, and atherosclerotic disease. HB-EGF can bind two locations on cell surfaces: heparan sulfate proteoglycans and EGF-receptor effecting cell to cell interactions.
==Interactions==
Heparin-binding EGF-like growth factor has been shown to interact with NRD1, Zinc finger and BTB domain-containing protein 16 and BAG1.
HB-EGF biological activities with these genes influence cell cycle progression, molecular chaperone regulation, cell survival, cellular functions, adhesion, and mediation of cell migration. The NRD1 gene codes for the protein nardilysin, an HB-EGF modulator. Zinc finger and BTB domain-containing protein 16 and BAG family molecular chaperone regulator function as co-chaperone proteins in processes involving HB-EGF.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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