Active Recombinant Human RSPO1, Fc-tagged, Biotinylated

• Cat.No.: RSPO1-670H
• Product Overview: The recombinant human RPSO1-Fc fusion is expressed as a 481 amino acid protein consisting of Ser21 - Ala263 region of (UniProt accession #Q2MKA7) and a C-terminal Fc from human IgG1, which exists as a dimer under non-reducing conditions.

Specification

• Source: Human cells
• Species: Human
• Tag: Fc
• Form: Supplied at 0.5 mg/ml in sterile PBS pH7.4 (carrier & preservative free). The purified recombinant protein was labeled with Biotin (3-5 Biotin per molecule).
• Bio-activity: Synergizes with Wnt3a to stabilize β-catenin protein levels and induces the activation of β-catenin responsive Luciferase reporter gene in HEK293 cells with a typical ED50 of 50 - 200 ng/ml.
• Molecular Mass: Calculated molecular mass (kDa): 53.5; Estimated by SDS-PAGE under reducing condition (kDa): 55-60.
• AA Sequence: SRGIKGKRQRRISAEGSQACAKGCE LCSEVNGCLKCSPKLFILLERNDIR QVGVCLPSCPPGYFDARNPDMNKCI KCKIEHCEACFSHNFCTKCKEGLYL HKGRCYPACPEGSSAANGTMECSSP AQCEMSEWSPWGPCSKKQQLCGFR RGSEERTRRVLHAPVGDHAACSDTK ETRRCTVRRVPCPEGQKRRKGGQGR RENANRNLARKESKEAGAGSRRRK GQQQQQQQGTVGPLTSAGPASTTEN LYFQGSTGTHTCPPCPAPELLGGPS VFLFPPKPKDTLMISRTPEVTCVV VDVSHEDPEVKFNWYVDGVEVHNAK TKPREEQYNSTYRVVSVLTVLHQDW LNGKEYKCKVSNKALPAPIEKTIS KAKGQPREPQVYTLPPSREEMTKNQ VSLTCLVKGFYPSDIAVEWESNGQP ENNYKTTPPVLDSDGSFFLYSKLT VDKSRWQQGNVFSCSVMHEALHNHY TQKSLSLSPGK
• Endotoxin: <0.1 eu per 1 μg of purified recombinant protein determined by the lal>
• Purity: >95% judged by SDS-PAGE under reducing condition
• Storage: The product is shipped at 4°C. Upon receipt, centrifuge the product briefly before opening the vial. It is recommended to store small aliquots at the temperature below –20°C for long-term storage and the product is stable for 3 months. The undiluted protein can be stored at 4°C for no more than 2 weeks. Avoid repeated freeze-thaw cycles.

Gene Information

• Gene Name: RSPO1 R-spondin 1 [ Homo sapiens ]
• Official Symbol: RSPO1
• Synonyms: RSPO1; R-spondin 1; R spondin homolog (Xenopus laevis); R-spondin-1; FLJ40906; RSPONDIN; R-spondin homolog; roof plate-specific spondin-1; RSPO; CRISTIN3; RP11-566C13.1
• Gene ID: 284654
• mRNA Refseq: NM_001038633
• Protein Refseq: NP_001033722
• MIM: 609595
• UniProt ID: Q2MKA7
• Chromosome Location: 1p34.2
• Pathway: Wnt signaling network, organism-specific biosystem
• Function: heparin binding; protein binding; receptor binding

Reviews

03/13/2022

Remarkable changes in cell behavior were attributed to the potent effects of the product.

01/16/2018

The product's respected reputation in the scientific community was a testament to its quality and effectiveness.

09/25/2016

Dependable protein-protein interaction outcomes were achieved due to the product's pure composition.

Q&As

What distinguishes RSPO1 from other RSPO molecules, particularly in terms of its potential therapeutic use in Regenerative Medicine?

RSPO1 stands out for its potential therapeutic use in Regenerative Medicine due to its mitogenic activity in stem cells.

What methods were employed to characterize the purified rhRSPO1, both structurally and biologically?

Characterization methods included Western blotting, mass spectrometry, and in vitro (C2C12 cells) and in vivo (BALB/c mice) biological activity assays, confirming structural integrity and biological efficacy.

What tissue-specific processes are regulated by RSPOs, and what are some examples of these processes?

RSPOs regulate various tissue-specific processes, including bone formation, skeletal muscle tissue development, proliferation of pancreatic β-cells, intestinal stem cells, and cancer progression.

Describe the purification strategy used to obtain rhRSPO1, including the chromatographic steps involved.

The purification strategy for rhRSPO1 involved two sequential chromatographic steps: heparin affinity chromatography followed by molecular exclusion chromatography.

How does RSPO1 induce the Wnt pathway, and what are the downstream effects on cell proliferation, differentiation, and death?

RSPO1 induces the Wnt pathway by stabilizing the Wnt receptor complex, leading to enhanced Wnt signaling and influencing cellular processes.

How was recombinant human RSPO1 (rhRSPO1) generated, and which cell line was used for this purpose?

rhRSPO1 was generated using the HEK293 cell line, and the coding sequence was synthesized and subcloned into a mammalian cell expression vector.

What is the main function of R-Spondin proteins, including RSPO1, in cellular processes?

R-Spondin proteins, including RSPO1, play crucial roles in cell proliferation, differentiation, and death by inducing the Wnt pathway.