Wnt proteins constitute a family of secreted glyocoproteins that activate signal transduction pathways to mediate tissue homeostasis, cell fate, cell proliferation, and self-renewal. The canonical signaling pathway is initiated upon Wnt binding to a Frizzled family receptor and an LRP5/LRP6 coreceptor, which leads to activation of the beta-catenin cascade. Non-canonical Wnt signals are activated by binding to a Frizzled family receptor and ROR2 coreceptor. Extensive research has shown that deregulation of these pathways or its components can lead to cancer. Human Wnt-1 is encoded as a 370 amino acid precursor that, upon secretion, is cleaved into a 343 amino acid (42 kDa) mature form. At the amino acid level, mature human Wnt-1 is approximately 99% identical to mature mouse Wnt-1. Depending on the tissue, Wnt-1 can activate the canonical and non-canonical signaling pathways. Studies have demonstrated its involvement in a variety of functions, including embryonic development and carcinogenesis. Wnt-1 signaling can also induce the phosphorylation and subsequent degradation of c-Myb.
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Protein Aliases: Proto-oncogene Int-1; Proto-oncogene Int-1 homolog; proto-oncogene protein Wnt-1; Proto-oncogene Wnt-1; wingless-related MMTV integration site 1; Wingless-type MMTV integration site 1 homolog; Wingless-type MMTV integration site 1, homolog; wingless-type MMTV integration site family member 1; wingless-type MMTV integration site family, member 1 (oncogene INT1)
Gene Aliases: BMND16; Int-1; INT1; OI15; sw; swaying; Wnt-1; WNT1
Molecular Function: intercellular signal molecule