NTR domain, Netrin-4-like subfamily; composed of the C-terminal NTR domains of netrin-4 (beta netrin) and similar proteins. Netrins are secreted proteins that function as tropic cues in the direction of axon growth and cell migration during neural development. Netrin-4 is a basement membrane component that is important in neural, kidney and vascular development. It may also be involved in regulating the outgrowth and shape of epithelial cells during lung branching morphogenesis.
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