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Human R-Spondin 1 / RSPO1 Protein, His Tag

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分子别名(Synonym)

RSPO1,CRISTIN3,FLJ40906,RP11-566C13.1,R-spondin-1

表达区间及表达系统(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

Request for sequence

蛋白结构(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.

内毒素(Endotoxin)

Less than 1.0 EU per μg by the LAL method.

纯度(Purity)

>95% as determined by SDS-PAGE.

制剂(Formulation)

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

Contact us for customized product form or formulation.

重构方法(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.

存储(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.
 

电泳(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%.

 

活性(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).

Protocol

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).

Protocol

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).

Protocol

 

活性(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).

Protocol

 

背景(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.

文献引用(Citations)

 

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