Leucine-rich repeat-containing G-protein coupled receptor 6

Definition

Receptor for R-spondins that potentiates the canonical Wnt signaling pathway and acts as a marker of multipotent stem cells in the epidermis. 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. May act as a tumor suppressor.

References:

[1]. Wim de Lau, et al. Lgr5 homologues associate with Wnt receptors and mediate R-spondin signalling. Nature. 2011 Jul 4;476(7360):293-7. [Content Brief]

[2]. Xing Gong, et al. LGR6 is a high affinity receptor of R-spondins and potentially functions as a tumor suppressor. PLoS One. 2012;7(5):e37137. [Content Brief]

生物医学辞典

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