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Key Documents

SRP3292

Sigma-Aldrich

R-SPONDIN-1 human

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

Synonym(s):

Rspo1

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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

potency

1.0-3.0 μg/mL ED50

mol wt

26.0-40.0 kDa

packaging

pkg of 20 μg

impurities

<0.1 EU/μg endotoxin, tested

color

white

UniProt accession no.

Q2MKA7

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... RSPO1(284654)

General description

R-Spondin-1 (Rspo-1) belongs to the (Rspo) family of Wnt modulators. Currently, the (Rspo) family consists of four structurally related secreted ligands (Rspo 1-4), all containing furin-like and thrombospondin structural domains. Rspo-1 is expressed in certain areas of the developing central nervous system, as well as in adrenal glands, ovary, testis, thyroid, and trachea. Recombinant human R-Spondin-1 is a 26.7kDa protein consisting of 243 amino acid residues. Due to glycosylation, R-Spondin-1 migrates at an apparent molecular weight of approximately 40.0kDa by SDS PAGE analysis under reducing conditions.

Biochem/physiol Actions

Rspo (R-Spondin) can interact with the Frizzled/LRP6 (LDL receptor related protein 6) receptor complex in a manner that stimulates the Wnt/beta-catenin signaling pathway. Disruption of Rspo-1 gene causes recessive syndrome with XX sex reversal, palmoplantar hyperkeratosis and predisposition to squamous cell carcinoma of the skin. Rspo-1 is also associated with radioresistance of tumor cells.

Physical form

Lyophilized from 10 mM Sodium Phosphate, pH 7.5.

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

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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R-Spondin proteins: a novel link to beta-catenin activation.
Kim KA, et al.
Cell Cycle, 5, 23-26 (2006)
R-spondin1 is essential in sex determination, skin differentiation and malignancy.
Parma P, et al.
Nature Genetics, 38, 1304-1309 (2006)
Xuefeng Gu et al.
Oncotarget, 6(12), 9756-9765 (2015-04-14)
Although radiation therapy is the most effective postoperative adjuvant treatment, it does not substantially improve the long-term outcomes of glioma patients because of the characteristic radioresistance of glioma. We found that R-Spondin1 (Rspo1) expression was elevated in high-grade gliomas and
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
Yong-Guo Zhang et al.
Autophagy, 15(11), 1935-1953 (2019-03-22)
Extracellular HMGB1 (high mobility group box 1) is considered as a damage-associated molecular pattern protein. However, little is known about its intracellular role. We studied the mechanism whereby intestinal epithelial HMGB1 contributes to host defense, using cell culture, colonoids, conditional

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