{"product_id":"cst-78564s","title":"CST,  78564S, CD45RA (HI100) Mouse Monoclonal Antibody (PerCP-Cy5.5® Conjugate)","description":"Monoclonal Antibody for studying CD45. Validated for Flow Cytometry (Fixed\/Permeabilized),Flow Cytometry (Live). Highly specific and rigorously validated in-house, CD45RA (HI100) Mouse Monoclonal Antibody (PerCP-Cy5.5\u003csup\u003e®\u003c\/sup\u003e Conjugate) (CST #78564) is ready to ship.\n\n\u003cb\u003eProduct Usage Information\u003c\/b\u003e\nFlow Cytometry (Fixed\/Permeabilized): 1:20\nFlow Cytometry (Live): 1:20\n\u003cb\u003eStorage\u003c\/b\u003e\nSupplied in 10 mM NaH 2 PO 4 , 150 mM NaCl, 0.09% NaN 3 , 0.1% gelatin, pH 7.2. This product is stable for 6 months when stored at 4ºC. Do not aliquot the antibody. Protect from light. Do not freeze.\n\u003cb\u003eProtocol\u003c\/b\u003e\nAvailable protocols: Flow Cytometry (Fixed\/Permeabilized), Flow Cytometry (Live)\n\u003cb\u003eSpecificity \/ Sensitivity\u003c\/b\u003e\nCD45RA (HI100) Mouse Monoclonal Antibody (PerCP-Cy5.5\nSpecies Reactivity: Human\n\u003cb\u003eSource \/ Purification\u003c\/b\u003e\nThis monoclonal antibody was purified from tissue culture supernatant via affinity chromatography. The purified antibody was conjugated under optimal conditions, with unreacted dye removed from the preparation.\n\u003cb\u003eBackground\u003c\/b\u003e\nThe protein phosphatase (PTP) receptor CD45 is a type I transmembrane protein comprised of a pair of intracellular tyrosine phosphatase domains and a variable extracellular domain generated by alternative splicing (1). The catalytic activity of CD45 is a function of the first phosphatase domain (D1) while the second phosphatase domain (D2) may interact with and stabilize the first domain, or recruit\/bind substrates (2,3). CD45 interacts directly with antigen receptor complex proteins or activates Src family kinases involved in the regulation of T- and B-cell antigen receptor signaling (1). Specifically, CD45 dephosphorylates Src-family kinases Lck and Fyn at their conserved negative regulatory carboxy-terminal tyrosine residues and upregulates kinase activity. Conversely, studies indicate that CD45 can also inhibit Lck and Fyn by dephosphorylating their positive regulatory autophosphorylation site. CD45 appears to be both a positive and a negative regulator that conducts signals depending on specific stimuli and cell type (1). Human leukocytes including lymphocytes, eosinophils, monocytes, basophils, and neutrophils express CD45, while erythrocytes and platelets are negative for CD45 expression (4). Several isoforms of CD45 are generated through alternative splicing in a cell type-specific and activation state-specific manner. The HI100 antibody is widely used as a leukocyte marker for naïve and activated T cells. Naïve T cells are positive for CD45RA, where activated T cells are negative for CD45RA (5).\n\u003cb\u003eAlternate Names\u003c\/b\u003e\nB220; CD45; CD45 antigen; CD45R; CD45RA; CD45RO; glycoprotein; GP180; L-CA; LCA; Leukocyte common antigen; leukocyte-common antigen; LY5; protein tyrosine phosphatase receptor type C; protein tyrosine phosphatase, receptor type, C; protein tyrosine phosphatase, receptor type, c polypeptide; PTPRC; Receptor-type tyrosine-protein phosphatase C; T200; T200 glycoprotein; T200 leukocyte common antigen\n\n\u003cb\u003eSpecification\u003c\/b\u003e\n\nREACTIVITY: H\nSENSITIVITY: Endogenous\nSource\/Isotype: Mouse IgG2b kappa","brand":"CST","offers":[{"title":"Default Title","offer_id":46800531030185,"sku":"78564S","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/products\/cst-78564s","provider":"Iright","version":"1.0","type":"link"}