Invitrogen™ FR4 Monoclonal Antibody (eBio12A5), PE-Cyanine7, eBioscience™, Invitrogen™

Catalog No.	Quantity
50-155-78	100 μg
50-155-77	25 μg

Catalog No. 50-155-78 Supplier Invitrogen™ Supplier No. 25544582

Description

Rat Monoclonal Antibody

Description: The monoclonal antibody eBio12A5 recognizes FR4, also known as Folate receptor 4, FR delta and FBP3 (folate binding protein3). FR4 is a heavily glycosylated, 35 kD receptor for folic acid and the physiologic circulating form of the vitamin, N5-methyltetrahydrofolate. Natural Treg have high levels of FR4 and together with CD25 can be used to distinguish natural Treg, effector T cells, memory-like T cells and naive T cells. FR4 high CD25 high cells are natural Treg with high levels of Foxp3. FR4 high CD25 low cells are identified as central memory T cells, which upon stimulation, can proliferate and produce large amounts of IL-2. In contrast, FR4 low CD25 high cells secrete proinflammatory cytokines such as IFN gamma and IL-17 and have been characterized as effector memory T cells. Based on co-staining studies, the epitopes recognized by eBioTH6 and eBio12A5 are different, thereby allowing functional studies with eBioTH6 to be evaluated with eBio12A5. Applications Reported: This eBio12A5 antibody has been reported for use in flow cytometric analysis. Applications Tested: This eBio12A5 antibody has been tested by flow cytyometric analysis of mouse splenocytes. This can be used at less than or equal to 0.5 μg per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.

FR4 is a heavily glycosylated 35 kD receptor for folic acid and the physiologic circulating form of the vitamin, N5-methyltetrahydrofolate. Natural T regs have high levels of FR4 and together with CD25 can be used to distinguish natural Tregs, effector T cells, memory-like T cells and naive T cells. In vivo studies with eBioTH6 show a decrease in the number of CD4+CD25+ cells and an enhanced tumor response leading to the elimination of advanced stages of tumors.

Specifications

• Antigen: FR4
• Applications: Flow Cytometry
• Classification: Monoclonal
• Clone: eBio12A5
• Concentration: 0.2 mg/mL
• Conjugate: PE-Cyanine7
• Formulation: PBS with 0.09% sodium azide; pH 7.2
• Gene: Izumo1r
• Gene Accession No.: Q9EQF4
• Gene Alias: 0910001L11Rik; C86255; Folate receptor 4; folate receptor 4 (delta); folate receptor 4 (delta) homolog; folate receptor 4, delta (putative); folate receptor delta; Folate-binding protein 3; Folbp3; Folr4; FR-delta; IZUMO1 receptor protein JUNO; IZUMO1 receptor, JUNO; Izumo1r; Juno; probable folate receptor delta; sperm-egg fusion protein Juno
• Gene Symbols: Izumo1r
• Host Species: Rat
• Purification Method: Affinity chromatography
• Quantity: 100 μg
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 64931
• Target Species: Mouse
• Content And Storage: 4°C, store in dark, DO NOT FREEZE!
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG2b κ

For Research Use Only.