FR4 (Folate receptor 4) Rat anti-Mouse, Brilliant Violet 650, Clone: 12A5, BD Optibuild™

Rat Monoclonal Antibody

Supplier:  BD Biosciences 744122

Catalog No. BDB744122

Description

The monoclonal antibodies TH6 and 12A5 recognize Folate Receptor 4(FR4), also known as the membrane folate- binding protein 3(FBP3). FR4 is a heavily glycosylated 35 kD receptor expressed exclusively in lymphoid tissue and an isoform of the family of receptors that recognize the essential nutrient folic acid. Natural T regulatory cells constitutively express high levels of FR4. Differential expression of FR4 in combination with CD25 can distinguish four functionally distinct CD4+ T cell subpopulations; Natural Tregs, effector T cells, memory-like T cells and Naοve T cells. FR4hi CD25+ expressing CD4+ T cells also express high amounts of Foxp3, GITR and CTLA-4.Monoclonal antibody TH6 and 12A5 stained CD25+CD4+ T cells at a higher level than other CD4+ or CD8+ T cells. In addition, in vivo injection of TH6 monoclonal antibody reduced the number of CD25+CD4+ T cells and CD25-CD4+ T cells in peripheral blood. Clone 12A5 has been demonstrated to work in western blot. Clones TH6 and 12A5 do not block one another in a flow cytometric assay.

The antibody was conjugated to BD Horizon™ BV650 which is part of the BD Horizon Brilliant™ Violet family of dyes. This dye is a tandem fluorochrome of BD Horizon BV421 with an Ex Max of 405nm and an acceptor dye with an Em Max at 650nm. BD Horizon BV650 can be excited by the violet laser and detected in a filter used to detect APC-like dyes (eg, 660/20nm filter). Due to the excitation and emission characteristics of the acceptor dye, there will be spillover into the APC and Alexa Fluor™ 700 detectors. However, the spillover can be corrected through compensation as with any other dye combination. BV650 is a tandem fluorochrome of BD Horizon BV421 and an acceptor dye with an emission maximum at 650 nm. Due to the excitation and emission characteristics of the acceptor dye, there will be spillover into the APC and Alexa Fluor™ 700 detectors. BV650 will have moderate spillover into the BD Horizon™ BV711 detector.

Specifications

• Antigen: FR4 (Folate receptor 4)
• Clone: 12A5
• Conjugate: Brilliant Violet 650
• Gene Alias: Folate receptor 4, FBP, FBP3, FRdelta, FRd
• Immunogen: Mouse CD4+ CD25+ T cells
• Quantity: 50 μg
• Primary or Secondary: Primary
• Content And Storage: Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.

• Classification: Monoclonal
• Concentration: 0.2mg/mL
• Formulation: Aqueous buffered solution containing ≤0.09% sodium azide.
• Host Species: Rat
• Purification Method: Affinity Purified
• Regulatory Status: RUO
• Target Species: Mouse
• Isotype: IgG1

Safety and Handling

WARNING: Reproductive Harm - www.P65Warnings.ca.gov