Rabbit anti-Human RSPO3 Polyclonal Antibody

Uniprot Id

Q9BXY4

Target Species

Human

Target Name

RSPO3

Target Full Name

R-spondin-3

Target Function

Activator of the canonical Wnt signaling pathway by acting as a ligand for LGR4-6 receptors, which acts as a key regulator of angiogenesis. 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. Acts as a key regulator of angiogenesis by controlling vascular stability and pruning: acts by activating the non-canonical Wnt signaling pathway in endothelial cells. Can also amplify Wnt signaling pathway independently of LGR4-6 receptors, possibly by acting as a direct antagonistic ligand to RNF43 and ZNRF3.

Target Subcellular Location

Secreted.

Target Protein Families

R-spondin family

Target Tissue Specificity

Ubiquitously expressed. Expressed at higher level in placenta, small intestine, fetal thymus and lymph node. Highly expressed in endothelial cells.

Target Synonyms

CRISTIN1; hPWTSR; hRspo3; Protein with TSP type-1 repeat; PWTSR; R-spondin 3 homolog; R-spondin-3 [Precursor]; R-spondin-3; Roof plate specific spondin-3; Roof plate-specific spondin-3; RSPO3; RSPO3_HUMAN; Thrombospondin type I domain containing 2; Thrombospondin type-1 domain-containing protein 2; THSD2

Target Background

This gene belongs to the R-spondin family. The encoded protein plays a role in the regulation of Wnt (wingless-type MMTV integration site family)/beta-catenin and Wnt/planar cell polarity (PCP) signaling pathways, which are involved in development, cell growth and disease pathogenesis. Genome-wide association studies suggest a correlation of this gene with bone mineral density and risk of fracture. This gene may be involved in tumor development.