FEATURES

FAMILY

DESCRIPTION

Also known as LGR5_HUMAN, LGR5, GPR49, GPR67. Receptor for R-spondins that potentiates the canonical Wnt signaling pathway and acts as a stem cell marker of the intestinal epithelium and the hair follicle. Upon binding to R-spondins (RSPO1, RSPO2, RSPO3 or RSPO4), associates with phosphorylated LRP6 and frizzled receptors that are activated by extracellular Wnt receptors, triggering the canonical Wnt signaling pathway to increase expression of target genes. In contrast to classical G-protein coupled receptors, does not activate heterotrimeric G-proteins to transduce the signal. Involved in the development and/or maintenance of the adult intestinal stem cells during postembryonic development. Identified in a complex composed of RNF43, LGR5 and RSPO1 (PubMed:21909076, PubMed:21727895, PubMed:21693646, PubMed:22815884, PubMed:23809763, PubMed:23756651). Also interacts with other R-spondin ligands, including RSPO2, RSPO3 and RSPO4 (PubMed:21909076, PubMed:21727895, PubMed:21693646, PubMed:29769720).

EXTERNAL LINKS

LGR5

Leucine-rich repeat-containing G-protein coupled receptor 5

LGR5

Molecular Synopsis