Recombinant Human MSP/MST1 (CHO-expressed) Protein, CF

Catalog # Availability Size / Price Qty
R&D Systems Recombinant Proteins and Enzymes
1 Image
Product Details
Supplemental Products

Recombinant Human MSP/MST1 (CHO-expressed) Protein, CF Summary

Product Specifications

>90%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Measured by its ability to activate MSP R/Ron in MDA-MB-453 or T47D human breast cancer cells. 80 ng/mL of the recombinant human MSP significantly induces phosphorylation of MSP R/Ron measured by the Human Phospho-MSP R/Ron DuoSet® IC Kit (Catalog # DYC1947). Measured by its binding ability in a functional ELISA. When Recombinant Human MSPR/Ron Protein (Catalog # 1947-MS) is represent at 100 ng/mL (100 µg/mL), The concentration of Recombinant Human MSP/MST1 that produces 50% optimal binding response is found to be 8-40 ng/mL.
Chinese Hamster Ovary cell line, CHO-derived human MSP/MST1 protein
Gln19-Arg483 ( alpha -chain) & Val484-Gly711 ( beta -chain)
Accession #
N-terminal Sequence
No results obtained: Gln19 predicted ( alpha -chain) & Val484 ( beta -chain)
Structure / Form
Disulfide-linked heterodimer
Predicted Molecular Mass
53 kDa ( alpha -chain), 25 kDa ( beta -chain)
85 kDa, non-reducing conditions

Product Datasheets

You must select a language.



Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.


Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Background: MSP/MST1

Macrophage stimulating protein (MSP), also known as HGF-like protein, and scatter factor-2, is a member of the HGF family of growth factors (1). MSP is secreted as an inactive single chain precursor (pro-MSP) that contains a PAN/APPLE-like domain, four kringle domains, and a peptidase S1 domain which lacks enzymatic activity (2). Human MSP shares 79% aa sequence identity with mouse MSP, and 44% aa sequence identity with human HGF. Pro-MSP is secreted by hepatocytes under the positive and negative control of CBP in complex with either HNF-4 or RAR, respectively (3). Circulating pro-MSP is proteolytically cleaved in response to tissue injury to yield a biologically active disulfide linked heterodimer consisting of a 45 - 62 kDa alpha and a 25 - 35 kDa beta chain (4, 5). Pro-MSP can be activated by MT-SP1, a transmembrane protease that is expressed on macrophages and is upregulated in many cancers (6). Heterodimeric MSP as well as the isolated beta chain bind to MSP R/Ron with high-affinity; however, only heterodimeric MSP can induce receptor dimerization and signaling (7, 8). MSP induces macrophage and keratinocyte proliferation and osteoclast activation (9, 10). It also inhibits LPS- or IFN-induced iNOS and IL-12 expression by macrophages, and prevents apoptosis of epithelial cells separated from the ECM (11, 12).

  1. Wang, M.-H. et al. (2002) Scand. J. Immunol.56:545.
  2. Han, S. et al. (1991) Biochemistry 30:9768.
  3. Muraoka, R.S. et al. (1999) Endocrinology 140:187.
  4. Wang, M.-H. et al. (1996) J. Clin. Invest. 97:720.
  5. Nanney, L.B. et al. (1998) J. Invest. Dermatol. 111:573.
  6. Bhatt, A.S. et al. (2007) Proc. Natl. Acad. Sci. 104:5771.
  7. Wang, M.-H. et al. (1997) J. Biol. Chem. 272:16999.
  8. Danilkovitch, A. et al. (1999) J. Biol. Chem. 274:29937.
  9. Wang, M.-H. et al. (1996) Exp. Cell Res. 226:39.
  10. Kurihara, N. et al. (1998) Exp. Hematol. 26:1080.
  11. Morrison, A.C. et al. (2004) J. Immunol. 172:1825.
  12. Liu, Q.P. et al. (1999) J. Immunol. 163:6606.
Long Name
Macrophage Stimulating Protein/Macrophage Stimulating 1 [Hepatocyte Growth Factor-like]
Entrez Gene IDs
4485 (Human); 15235 (Mouse); 24566 (Rat)
Alternate Names
D3F15S2; EC 3.4.21; hepatocyte growth factor-like protein homolog; HGFL; HGFLhepatocyte growth factor-like protein; macrophage stimulating 1 (hepatocyte growth factor-like); Macrophage stimulatory protein; Macrophage-stimulating protein; MSP; MSPDNF15S2; MST1; NF15S2; SF2


No product specific FAQs exist for this product, however you may

View all Proteins and Enzyme FAQs

DuoSet IC (Intracellular) Pan Phospho-tyrosine ELISA Development Systems

Reconstitution Buffers

Reviews for Recombinant Human MSP/MST1 (CHO-expressed) Protein, CF

There are currently no reviews for this product. Be the first to review Recombinant Human MSP/MST1 (CHO-expressed) Protein, CF and earn rewards!

Have you used Recombinant Human MSP/MST1 (CHO-expressed) Protein, CF?

Submit a review and receive an Amazon gift card.

$25/€18/£15/$25CAN/¥75 Yuan/¥1250 Yen for a review with an image

$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image

Submit a Review