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Your Position: Home > Protein > R-Spondin 1 > RS1-H4221

Human R-Spondin 1 / RSPO1 Protein, His Tag

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  • Synonym
    RSPO1,CRISTIN3,FLJ40906,RP11-566C13.1,R-spondin-1
  • Source
    Human R-Spondin 1, His Tag(RS1-H4221) is expressed from human 293 cells (HEK293). It contains AA Ser 21 - Ala 263 (Accession # Q2MKA7-1 ).
    Predicted N-terminus: Ser 21
  • Molecular Characterization
    R-Spondin 1 Structure

    This protein carries a polyhistidine tag at the C-terminus.

    The protein has a calculated MW of 28.7 kDa. The protein migrates as 38-42 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
R-Spondin 1 SDS-PAGE

Human R-Spondin 1, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
 R-Spondin 1 ELISA

Immobilized Human R-Spondin 1, His Tag (Cat. No. RS1-H4221) at 5 μg/mL (100 μL/well) can bind Human SCARB2, Fc Tag (Cat. No. SC2-H5250) with a linear range of 0.02-1.25 μg/mL (Routinely tested).

 R-Spondin 1 ELISA

Immobilized Human R-Spondin 1, His Tag (Cat. No. RS1-H4221) at 5 μg/mL (100 μL/well) can bind Biotinylated Human CD36, His,Avitag (Cat. No. CD6-H82E9) with a linear range of 0.01-1.25 μg/mL (Routinely tested).

 R-Spondin 1 ELISA

Immobilized Human R-Spondin 1, His Tag (Cat. No. RS1-H4221) at 5 μg/mL (100 μL/well) can bind Human LRP-6 (20-630), Mouse IgG2a Fc Tag (Cat. No. LR6-H5253) with a linear range of 1-20 ng/mL (Routinely tested).

Bioactivity-Bioactivity CELL BASE
 R-Spondin 1 CELL

Human R-Spondin 1, His Tag (Cat. No. RS1-H4221) induced TCF reporter activity in HEK293 cells. The EC50 for this effect is 0.0035-0.0040 µg/mL (Routinely tested).

  • Background
    R-spondin-1 is also known as Roof plate-specific Spondin 1 (RSPO1) and cysteinerich and single thrombospondin domain containing protein 3 (Cristin 3), which is a secreted protein which belongs to the R-Spondin family and encodes a secreted activator protein with two cystein-rich, furin-like domains and one thrombospondin type 1 domain. All Rspondins regulate Wnt/β-catenin signaling, but have distinct expression patterns. Like other R-Spondins, R-Spondin-1 contains two adjacent cysteinerich furinlike domains (aa 34-135) with one potential N-glycosylation site, followed by a thrombospondin (TSP1) motif (aa 147-207) and a region rich in basic residues (aa 211-263). Only the furinlike domains are needed for β-catenin stabilization. A putative nuclear localization signal at the C-terminus may allow some expression in the nucleus.
  • Clinical and Translational Updates

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