| Post Translational Modifications | C-, and N-glycosylated. N-glycosylation at Asn-137, negatively influences its secretion and enhancing effect on Wnt/beta-catenin signaling. C-mannosylation at Trp-156 by DPY19L3 is required for its secretion and regulates the enhancing activity of Wnt signaling. |
| Function | Activator of the canonical Wnt signaling pathway by acting as a ligand for LGR4-6 receptors. Upon binding to LGR4-6 (LGR4, LGR5 or LGR6), LGR4-6 associate 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. Also regulates the canonical Wnt/beta-catenin-dependent pathway and non-canonical Wnt signaling by acting as an inhibitor of ZNRF3, an important regulator of the Wnt signaling pathway. Acts as a ligand for frizzled FZD8 and LRP6. May negatively regulate the TGF-beta pathway. Has a essential roles in ovary determination. Regulates Wnt signaling by antagonizing DKK1/KREM1-mediated internalization of LRP6 through an interaction with KREM1. |
| Protein Name | R-Spondin-1Roof Plate-Specific Spondin-1Hrspo1 |
| Database Links | Reactome: R-HSA-4641263 |
| Cellular Localisation | SecretedNucleusSeems To Mainly Localize To Nucleoli |
| Alternative Protein Names | R-Spondin-1 proteinRoof Plate-Specific Spondin-1 proteinHrspo1 proteinRSPO1 protein |
Information sourced from Uniprot.org
