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SRP3323

Sigma-Aldrich

R-SPONDIN-3 human

recombinant, expressed in CHO cells, ≥95% (SDS-PAGE), ≥95% (HPLC)

Synonym(s):

PWTSR, RSPO3, Roof plate-specific spondin-3

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.32

biological source

human

recombinant

expressed in CHO cells

Assay

≥95% (HPLC)
≥95% (SDS-PAGE)

form

lyophilized

mol wt

26.9 kDa

packaging

pkg of 20 μg

impurities

endotoxin, tested

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... RSPO3(84870)

General description

The R-Spondin (Rspo) proteins belong to the Rspo family of Wnt modulators. Currently, the family consists of four structurally related secreted ligands (Rspo 1-4), all containing furin-like and thrombospondin structural domains. The Rspo proteins can interact with the Frizzled/LRP6 receptor complex in a manner that causes the stabilization and resulting accumulation of the intracellular signaling protein, ?-catenin. This activity effectively activates and increases the subsequent nuclear signaling of ?-catenin. R-Spondin can also bind to the previously discovered G-protein coupled receptors, LGR-4 and LGR-5. Rspo/?-catenin signaling can act as an inducer of the transformed phenotype, and can also regulate the proliferation and differentiation of certain stem cell populations. Recombinant human R-Spondin-3 is a 26.9 kDa protein consisting of 240 amino acid residues. Due to glycosylation, R-Spondin-3 migrates at an apparent molecular weight of approximately 37.0 kDa by SDS PAGE analysis under reducing conditions.

Biochem/physiol Actions

The R-Spondin (Rspo) proteins belong to the Rspo family of Wnt modulators. Currently, the family consists of four structurally related secreted ligands (Rspo 1-4), all containing furin-like and thrombospondin structural domains. Recombinant human R-Spondin-3 is a 26.9 kDa protein consisting of 240 amino acid residues.

Physical form

Lyophilized from 10 mM Sodium Phosphate, pH 7.5 + 150 mM NaCl.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Minke E Binnerts et al.
Proceedings of the National Academy of Sciences of the United States of America, 104(37), 14700-14705 (2007-09-07)
The R-Spondin (RSpo) family of secreted proteins act as potent activators of the Wnt/beta-catenin signaling pathway. We have previously shown that RSpo proteins can induce proliferative effects on the gastrointestinal epithelium in mice. Here we provide a mechanism whereby RSpo1

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