Homo sapiens Protein: RSPO3
Summary
InnateDB Protein IDBP-96171.7
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol RSPO3
Protein Name R-spondin 3
Synonyms
Species Homo sapiens
Ensembl Protein ENSP00000357300
InnateDB Gene IDBG-96167 (RSPO3)
Protein Structure
UniProt Annotation
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. {ECO:0000269PubMed:21727895, ECO:0000269PubMed:21909076, ECO:0000269PubMed:22615920}.
Subcellular Localization Secreted {ECO:0000250}.
Disease Associations
Tissue Specificity Ubiquitously expressed. Expressed at higher level in placenta, small intestine, fetal thymus and lymph node. {ECO:0000269PubMed:12463421}.
Comments
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 3 experimentally validated interaction(s) in this database.
Experimentally validated
Total 3 [view]
Protein-Protein 3 [view]
Protein-DNA 0
Protein-RNA 0
DNA-DNA 0
RNA-RNA 0
DNA-RNA 0
Gene Ontology

Molecular Function
Accession GO Term
GO:0005102 receptor binding
Biological Process
Cellular Component
GO:0005576 extracellular region
Protein Structure and Domains
PDB ID
InterPro IPR000884 Thrombospondin, type 1 repeat
IPR006212 Furin-like repeat
IPR009030 Insulin-like growth factor binding protein, N-terminal
PFAM PF00090
PRINTS
PIRSF
SMART SM00209
SM00261
TIGRFAMs
Post-translational Modifications
Modification
Cross-References
SwissProt Q9BXY4
PhosphoSite PhosphoSite-Q9BXY4
TrEMBL
UniProt Splice Variant
Entrez Gene 84870
UniGene Hs.135254
RefSeq
HUGO HGNC:20866
OMIM 610574
CCDS
HPRD 18181
IMGT
EMBL AF251057 AK027346 AK314912 AL031776 AL590733 BC022367 CH471051
GenPept AAH22367 AAK34947 BAB55051 BAG37424 CAH71124 CAH71125 CAI20141 CAI20142 EAW48115