CST, 3461S, Phospho-FLT3 (Tyr591) Antibody

Polyclonal Antibody for studying FLT3 (Tyr591) phosphate. Validated for Western Blotting. Highly specific and rigorously validated in-house, Phospho-FLT3 (Tyr591) Antibody (CST #3461) is ready to ship. Product Usage Information Western Blotting: 1:1000 Storage Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at -20°C. Do not aliquot the antibody. Protocol Available protocols: Western Blotting Specificity / Sensitivity Phospho-FLT3 (Tyr591) Antibody detects endogenous FLT3 only when phosphorylated at tyrosine 591. This antibody does not cross-react with other FLT family members. This antibody may cross-react with some tyrosine phosphorylated proteins. Species Reactivity: Human, Mouse Source / Purification Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr591 of human FLT3. Antibodies are purified by protein A and peptide affinity chromatography. Background FMS-related tyrosine kinase 3 (FLT3, also called FLK2) is a member of the Type III receptor tyrosine kinase family, which includes c-Kit, PDGFR, and M-CSF receptors. FLT3 is expressed on early hematopoietic progenitor cells and supports growth and differentiation within the hematopoietic system (1,2). FLT3 is activated after binding with its ligand FL, which results in a cascade of tyrosine autophosphorylation and tyrosine phosphorylation of downstream substrates (3). The p85 subunit of PI3 kinase, SHP2, GRB2, and Shc have all been reported to associate with FLT3 after FL stimulation (4-6). Tyr589/591 is located in the juxtamembrane region of FLT3 and may play an important role in regulation of FLT3 tyrosine kinase activity. Somatic mutations of FLT3 consisting of internal tandem duplications (ITDs) occur in 20% of patients with acute myeloid leukemia (7). Alternate Names CD135; CD135 antigen; fetal liver kinase 2; Fetal liver kinase-2; FL cytokine receptor; FLK-2; FLK2; FLT-3; FLT3; FLT3 receptor tyrosine kinase; fms related receptor tyrosine kinase 3; fms related tyrosine kinase 3; Fms-like tyrosine kinase 3; fms-related tyrosine kinase 3; growth factor receptor tyrosine kinase type III; Receptor-type tyrosine-protein kinase FLT3; Stem cell tyrosine kinase 1; STK-1; STK1; Tyrosine-protein kinase receptor FLT3 Specification REACTIVITY: H M SENSITIVITY: Endogenous MW (kDa): 130 nonglycosylated form;160 glycosylated mature form SOURCE: Rabbit