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Medical Definition of EGF like domain
1. Region of 30-40 amino acids containing 6 cysteines found originally in EGF and also in a range of proteins involved in cell signalling. Examples: TGF _, amphiregulin, urokinase, tissue plasminogen activator, complement C6 C9, fibronectin, laminin (each subunit at least 13 times), nidogen, selectins. It is also found in the Drosophila gene products: Notch (36 times) Delta, Slit, Crumbs, Serrate. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)