Lgr5/GPR49 Protein, Human (HEK293, hFc)

The Lgr5/GPR49 protein is a receptor for R-spondins that enhances the canonical Wnt signaling pathway and marks stem cells in the intestinal epithelium and hair follicles. Lgr5/GPR49 binds R-spondins (RSPO1-4), binds to phosphorylated LRP6 and Frizzled receptors, initiates Wnt signaling and amplifies target gene expression. Lgr5/GPR49 Protein, Human (HEK293, hFc) is the recombinant human-derived Lgr5/GPR49 protein, expressed by HEK293 , with C-hFc labeled tag. The total length of Lgr5/GPR49 Protein, Human (HEK293, hFc) is 522 a.a., with molecular weight of 110-120 kDa.

The Lgr5/GPR49 Protein serves as the receptor for R-spondins, functioning to potentiate the canonical Wnt signaling pathway while concurrently serving as a distinctive stem cell marker in the intestinal epithelium and hair follicle. Upon binding to R-spondins (RSPO1, RSPO2, RSPO3, or RSPO4), Lgr5/GPR49 associates with phosphorylated LRP6 and frizzled receptors activated by extracellular Wnt, initiating the canonical Wnt signaling pathway and amplifying the expression of target genes. In contrast to classical G-protein coupled receptors, Lgr5/GPR49 does not activate heterotrimeric G-proteins to transduce the signal, highlighting its unique regulatory role in Wnt signaling. It plays a crucial role in the development and maintenance of adult intestinal stem cells during postembryonic development and has been identified in a complex with RNF43 and RSPO1. Additionally, Lgr5/GPR49 interacts with other R-spondin ligands, including RSPO2, RSPO3, and RSPO4, emphasizing its diverse participation in cellular signaling pathways.

Human

HEK293

C-hFc

O75473-1 (G22-P543)

8549  [NCBI]

110-120 kDa

Greater than 95% as determined by reducing SDS-PAGE.

<1 EU/μg, determined by LAL method.