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Recombinant Mouse CXCL13/BLC/BCA-1 Protein

Catalog # 470-BC | R&D Systems, Inc. a Bio-Techne Brand
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Carrier Free
470-BC-025/CF

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With Carrier
470-BC-025

Key Product Details

Source

E. coli

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

E. coli-derived mouse CXCL13/BLC/BCA-1 protein
Ile22-Ala109

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.01 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ile22

Predicted Molecular Mass

9.8 kDa

Activity

Measured by its ability to chemoattract BaF3 mouse pro‑B cells transfected with human CXCR5.
The ED50 for this effect is 0.5‑2 µg/mL.

Formulation, Preparation and Storage

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.

Carrier: 470-BC
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
Reconstitution Reconstitute at 25 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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.
Carrier Free: 470-BC/CF
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
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.

Background: CXCL13/BLC/BCA-1

CXCL13, also known as B-lymphocyte chemoattractant (BLC), is a CXC chemokine that is constitutively expressed in secondary lymphoid organs. Mouse BCA-1 cDNA encodes a precursor protein of 109 amino acid residues with a putative leader sequence of 21 residues. Mature mouse BCA-1 shares 64% amino acid sequence similarity with the human protein and 23 - 34% amino acid sequence identity with other known CXC chemokines. Recombinant or chemically synthesized BCA-1 is a potent chemoattractant for B lymphocytes but not T lymphocytes, monocytes or neutrophils. BLR1, a G protein-coupled receptor originally isolated from Burkitt’s lymphoma cells, has now been shown to be the specific receptor for BCA-1. Among cells of the hematopoietic lineages, the expression of BLR1, now designated CXCR5, is restricted to B lymphocytes and a subpopulation of T helper memory cells. Mice lacking BLR1 have been shown to lack inguinal lymph nodes. These mice were also found to have impaired development of Peyer’s patches and defective formation of primary follicles and germinal centers in the spleen as a result of the inability of B lymphocytes to migrate into B cell areas.

References

  1. Gunn, M.D. et al. (1998) Nature, 391:799.
  2. Legler, D.F. et al. (1998) J. Exp. Med. 187:655.
  3. Forster, R. et al. (1996) Cell 87:1037.

Alternate Names

ANGIE2, BCA-1, BCA1, BLC, BLR1L, SCYB13

Entrez Gene IDs

10563 (Human); 55985 (Mouse)

Gene Symbol

CXCL13

UniProt

Product Documents for Recombinant Mouse CXCL13/BLC/BCA-1 Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Mouse CXCL13/BLC/BCA-1 Protein

For research use only

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