Recombinant Mouse CD320/TCblR/8D6A Fc Chimera Protein, CF

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Product Details

Summary
Reactivity MuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

Recombinant Mouse CD320/TCblR/8D6A Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its ability to bind plasma Cobalamin (Cbl) bound Transcobalamin (TC). Quadros, E.V. et al. (2009) Blood 113:186. When Recombinant Mouse CD320/TCblR/8D6A Fc Chimera is coated at 1 μg/mL (100 μL/well), it can bind human plasma TC (dilutions from 1:6 to 1:4000) in the presence of Cbl.
Source
Mouse myeloma cell line, NS0-derived mouse CD320/TCblR/8D6A protein
Mouse CD320
(Met1 - Gly208)
Accession # Q9Z1P5
IEGRMDP Mouse IgG2A
(Glu98 - Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Ala29
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
Cd320
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
46.7 kDa (monomer).
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
70-90 kDa, reducing conditions

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 under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 500 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 Mouse CD320/TCblR/8D6A Fc Chimera Protein, CF

  • 8D6 antigen
  • 8D6A
  • 8D6AFDC-SM-8D6
  • CD320 antigenFDC-signaling molecule 8D6,8D6TCBLR
  • CD320 molecule
  • CD320
  • TCblR
  • Transcobalamin receptor

Background

CD320, also known as the Transcobalamin II receptor (TCblR) and 8D6A, is an approximately 60 kDa transmembrane member of the LDL receptor family (1). Mature mouse CD320 consists of a 180 amino acid (aa) extracellular domain with two cysteine-rich LDLR-A repeats, a 21 aa transmembrane segment, and a 31 aa cytoplasmic domain (2, 3). Within the extracellular domain, mouse CD320 shares 52% aa sequence identity with human and rat CD320. Alternate splicing of mouse CD320 generates an additional isoform with a substitution of the N-terminal 40 aa. CD320 is a heavily glycosylated protein that is expressed as a noncovalent dimer in the kidney, placenta, liver, intestine, and secondary lymphoid organs (3 - 5). It functions as an endocytic receptor for circulating complexes of Cobalamin (Vitamin B12) and Transcobalamin II (3). In the immune system, CD320 is expressed by germinal center B cells and follicular dendritic cells (FDC) and provides a costimulatory signal to B cells during the germinal center reaction (2, 6 - 8). CD320 also cooperates with CD44 in promoting the development of B cell lymphomas (9).

  1. May, P. et al. (2007) Ann. Med. 39:219.
  2. Li, L. et al. (2000) J. Exp. Med. 191:1077.
  3. Quadros, E.V. et al. (2009) Blood 113:186.
  4. Bose, S. et al. (1995) J. Biol. Chem. 270:8152.
  5. Park, H.J. et al. (2009) Immune Netw. 9:138.
  6. Cho, W. et al. (2008) BMC Rep. 41:863.
  7. Zhang, X. et al. (2001) J. Immunol. 167:49.
  8. Park, C.-S. and Y.S. Choi (2005) Immunology 114:2.
  9. Li, L. et al. (2004) Blood 104:815.

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Bioinformatics

Gene Symbol Cd320
Entrez
Uniprot