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Recombinant Human CD52 Fc Chimera Protein, CF

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When Recombinant Human CD52 Fc Chimera is coated at 1 µg/mL, Recombinant Human Siglec-10 Fc Chimera (Catalog #2130-SL) binds with a typical ED50 of 1-5 μg/mL.
When Recombinant Human CD52 Fc Chimera is coated at 1 µg/mL, Recombinant Human Siglec-10 Fc Chimera (Catalog #2130-SL) binds with a typical ED50 of 1-5 μg/mL.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

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Recombinant Human CD52 Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its binding ability in a functional ELISA. When Recombinant Human CD52 Fc Chimera is immobilized at 1 μg/mL, 100 μL/well, the concentration of Recombinant Human
Siglec‑10 Fc Chimera (Catalog # 2130-SL) that produces 50% of the optimal binding response is approximately 1-5 μg/mL.
Source
Human embryonic kidney cell, HEK293-derived human CD52 protein
Human CD52
(Gly25-Ser36)
Accession # P31358		 IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Gly25
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
CD52
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
28 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
38 - 44 kDa, reducing conditions
Publications
Read Publication using
9116-CD in the following applications:

Packaging, Storage & Formulations

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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 200 μg/mL in PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human CD52 Fc Chimera Protein, CF

  • Cambridge pathology 1 antigen
  • CAMPATH-1 antigen
  • CAMPATH-1
  • CD52 antigen (CAMPATH-1 antigen)
  • CD52 antigen
  • CD52 molecule
  • CD52
  • CDW52 antigen (CAMPATH-1 antigen)
  • CDw52
  • Epididymal secretory protein E5
  • He5
  • HEL-S-171mP
  • Human epididymis-specific protein 5

Background

CD52, also known as CAMPATH-1 antigen, HE5, and gp20, is a cell surface glycoprotein that can be targeted to induce immune suppression by complement-mediated cell lysis (1, 2). Mature human CD52 is a 12 amino acid peptide that is tethered to the cell surface with a GPI linkage (3). It carries a large tissue-specific carbohydrate structure which increases the molecular weight of CD52 to 15-20 kDa (3-5). CD52 is expressed on lymphocytes, monocytes, monocycte-derived dendritic cells, eosinophils, and neutrophils (6-8), as well as on mature spermatozoa and epithelial cells lining the male genital tract (5, 9, 10). It protects sperm against anti-sperm antibodies by binding to C1q and inhibiting complement activation (11). CD52 ligation on CD4+ T cells induces a suppressive population of cells that release soluble CD52 which then binds to Siglec-10 (12-14). This interaction inhibits the proliferation of activated T cells and the cytotoxic function of autoimmune CD8+ T cells in type 1 diabetes (13).
  1. Morris, P.J. and N.K. Russell (2006) Transplantation 81:1361.
  2. Redpath, S. et al. (1998) Immunology 93:595.
  3. Xia, M.Q. et al. (1991) Eur. J. Immunol. 21:1677.
  4. Treumann, A. et al. (1995) J. Biol. Chem. 270:6088.
  5. Schroter, S. et al. (1999) J. Biol. Chem. 274:29862.
  6. Ratzinger, G. et al. (2003) Blood 101:1422.
  7. Elsner, J. et al. (1996) Blood 88:4684.
  8. Ambrose, L.R. et al. (2009) Blood 114:3052.
  9. Focarelli, R et al. (1998) Mol. Hum. Reprod. 4:119.
  10. Hale, G. et al. (1993) J. Reprod. Immunol. 23:189.
  11. Hardiyanto, L. et al. (2012) J. Reprod. Immunol. 94:142.
  12. Watanabe, T. et al. (2006) Clin. Immunol. 120:247.
  13. Bandala-Sanchez, E. et al. (2013) Nat. Immunol. 14:741.
  14. Toh, B.-H. et al. (2013) Cell. Mol. Immunol. 10:379.

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Publications for CD52 (9116-CD)(1)

We have publications tested in 1 confirmed species: Human.

We have publications tested in 1 application: Bioassay.


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Bioinformatics

Gene Symbol CD52
Uniprot