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Recombinant Human Mer His-tag Protein, CF

Catalog # 10515-MR | R&D Systems, Inc. a Bio-Techne Brand
CHO-expressed
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10515-MR-050

Key Product Details

Source

CHO

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Chinese Hamster Ovary cell line, CHO-derived human Mer protein
Arg20-Asp500, with a C-terminal 6-His tag

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Arg20

Predicted Molecular Mass

53 kDa

SDS-PAGE

95-115 kDa, under reducing conditions

Activity

Measured by its binding ability in a functional ELISA.
When Recombinant Human Mer His-tag (Catalog # 10515-MR) is immobilized at 2 µg/mL (100 µL/well), Recombinant Human GAS6 (Catalog # 885-GSB) binds with an ED50 of 1-10 μg/mL.

Scientific Data Images for Recombinant Human Mer His-tag Protein, CF

Recombinant Human Mer His-tag Protein Binding Activity

Recombinant Human Mer His-tag Protein Binding Activity

When Recombinant Human Mer His-tag (10515-MR) is immobilized at 2 μg/mL (100 μL.well), Recombinant Human Gas6 Protein (885-GSB) binds with an ED50 of 1-10 μg/mL.
Recombinant Human Mer His-tag Protein SDS-PAGE

Recombinant Human Mer His-tag Protein SDS-PAGE

2 μg/lane of Recombinant Human Mer His-tag Protein (Catalog # 10515-MR) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 95-115 kDa.

Formulation, Preparation and Storage

10515-MR
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 500 μg/mL in 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.

Background: Mer

Tyrosine-protein Kinase Mer, also known as c-Mer and MerTK, is a member of the receptor tyrosine kinase subfamily TAM (Tyro3, Axl, and Mer). Mature human Mer consists of 485 aa extracellular domain, 21 aa transmembrane domain, and 473 aa cytoplasmic domain. Within the extracellular domain, human Mer shares 77.2% and 76.6% homology with mouse and rat Mer, respectively. Similar to Axl and Tyro3, the extracelluar domain of Mer contains two Ig-like motifs and two fibronectin type III motifs. Mer is not expressed in normal B- and T-cells but expressed in neoplastic B- and T-cell lines (1-2).  It is also show higher expression in immunosuppressive M2‑like macrophages (3).  Mer is known to bind Gas6, Protein S, Tubby, Tubby-like protein 1 (Tulp1), and Galectin-3 (4-7). Upon binding ligands via the Ig-like motif, Mer is dimerized to trans-autophosphorylate the kinase domain to induce downstream signaling. It has been shown that Mer signaling in macrophages induces M2 polarization, which promote tumor growth, metastasis and evasion of anti-tumor immunity in tumor microenviroment (8). Inhibition of Mer, especially on leukocytes and macrophages, is an effective anti-cancer therapy (9).

References

  1. Graham, D.K. et al. (1994) Cell Growth Differ. 5:647.
  2. Graham, D.K. et al. (2006) Clin. Cancer Res. 12:2662.
  3. Shibata, T. et al. (2014) J. Immunol. 192:3569.
  4. Nagata, K. et al. (1996) J. Biol. Chem. 271:30022.
  5. Uehara, H. et al. (2008) J. Immunol. 180:2522.
  6. Caberoy, N.B. et al. (2010) EMBO J. 29:3898.
  7. Caberoy, N.B. et al. (2012) J. Cell Physiol. 227:401.
  8. Kim, S.Y. et al. (2016) Sci. Rep. 6:29673.
  9. Cummings, C.T. et al. (2013) Clin. Cancer Res. 19:5275.

Long Name

Receptor Tyrosine Protein Kinase Mer

Alternate Names

c-Eyk, C-mer, MerTK

Entrez Gene IDs

10461 (Human); 17289 (Mouse); 102143798 (Cynomolgus Monkey)

Gene Symbol

MERTK

UniProt

Product Documents for Recombinant Human Mer His-tag Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human Mer His-tag Protein, CF

For research use only

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