PE Rat Anti-Mouse CD185 (CXCR5)
Clone 2G8 (RUO)
- Brand BD Pharmingen™
- Alternative Name Blr1; C-X-C chemokine receptor type 5; CXC-R5; CXCR-5; Gpcr6; MDR15
- Concentration 0.2 mg/ml
- Isotype Rat LOU, also known as Louvain, LOU/C, LOU/M IgG2a, κ
- Reactivity Mouse (QC Testing)
Flow cytometry (Routinely Tested)
- Immunogen Mouse CXCR5
- Storage Buffer Aqueous buffered solution containing ≤0.09% sodium azide.
- Regulatory Status RUO
Regulatory Status Legend
The 2G8 monoclonal antibody specifically binds to the mouse C-X-C Chemokine Receptor type 5, CXCR5. CXCR5 is also known as CD185, BLR1, NLR and MDR15. CXCR5 is a seven-transmembrane, G-protein-coupled receptor that is specific for the CXC chemokine, CXCL13/BLC/BCA-1. The expression of CXCR5 has been detected in spleen, lymph nodes, tonsils, brain, bone marrow, T cells, B cells, cerebrum, cerebellum, hippcampus and pituitary. In mouse spleen, CXCR5 was strictly expressed by mature B cells and a small subset of T lymphocytes. CXCR5 plays a role in directing the migration of B and T cells to B cell follicles with the spleen and certain other lymphoid tissues. The immunogen used to generate 2G8 hybridoma was a recombinant protein containing N-terminal amino acids of mouse CXCR5 (GST-NmBLR1).
- Format PE
- Excitation Source Blue 488 nm,Green 532 nm,Yellow/Green 561 nm
- Excitation Max 496 nm
- Emission Max 578 nm
R-phycoerythrin (PE) is an accessory photosynthetic pigment found in red algae. It exists in vitro as a 240-kDa protein with 23 phycoerythrobilin chromophores per molecule. This makes PE one of the brightest fluorochromes for flow cytometry applications, but its photobleaching properties make it unsuitable for fluorescence microscopy.
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Preparation and Storage
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
The antibody was conjugated with R-PE under optimum conditions, and unconjugated antibody and free PE were removed.
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- An isotype control should be used at the same concentration as the antibody of interest.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
The PE-conjugated 2G8 antibody is convenient for the immunofluorescent staining and flow cytometric analyses of mouse leukocytes and cell lines that express CXCR5 (see figure). Chemokine receptors are known to internalize during manipulation resulting in low frequency expression. Immunophenotyping studies of chemokine receptors need to be performed on freshly collected whole blood (<24 Hrs). Incubation with the antibody should be done in the dark. Cellular manipulation, such as Ficoll separation, freezing, or exposure to cold temperatures prior to staining should be minimized, as these treatments have been shown to cause a decrease in staining intensity and inconsistent results.
Investigators should note that alternative staining procedures may be necessary. A multiple-step staining procedure is recommended, in some instances, to amplify immunofluorescent signals for the flow cytometric analysis of mouse CXCR5 expression. Investigators may find the Purified Rat Anti-Mouse CD185 (CXCR5) antibody (Cat. No. 551961) to be useful in conjunction with appropriate secondary and tertiary reagents for detecting low frequency expression, such as with Biotin Mouse Anti-Rat IgG2a (Cat. No. 553894) and PE Streptavidin (Cat. No. 554061) or FITC Streptavidin (Cat. No. 554060).