Description: The P67.6 monoclonal antibody reacts with human CD33 (also known as GP67 and P67), a 67 kDa type I transmembrane glycoprotein that is a member of the Siglec (sialic acid-binding Ig superfamily lectin) family. It is highly specific to the hematopoietic compartment and is expressed on monocytes, activated T cells, granulocytes, myeloid progenitors, and mast cells.
Applications Reported: This P67.6 antibody has been reported for use in flow cytometric analysis.
Applications Tested: This P67.6 antibody has been pre-titrated and tested by flow cytometric analysis of lysed whole blood. This can be used at 5 µL (0.06 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.
Excitation: 488 nm; Emission: 520 nm; Laser: Blue Laser.
Filtration: 0.2 µm post-manufacturing filtered.
CD33 is a transmembrane protein of the sialic acid-binding immunoglobulin-like lectin (Siglec) family. It belongs to the immunoreceptor tyrosine-based inhibitory motif (ITIM)-containing molecules able of recruiting protein tyrosine phosphatases SHP-1 and SHP-2 to signal assemblies, and these ITIMs are also used for ubiquitin-mediated removal of the receptor from the cell surface. CD33 is expressed on cells of myelomonocytic lineage, binds sialic acid residues in N- and O-glycans on cell surfaces, and is a therapeutic target for acute myeloid leukemia. Further, CD33 is found on granulocyte and macrophage precursors in the bone marrow, but is not on pluripotent stem cells. CD33 is also expressed on, and is a useful marker for, peripheral monocytes. CD33 is useful for distinguishing myelogenous leukemia cells from lymphoid or erythroid leukemias. Diseases associated with CD43 dysfunction include gallbladder lymphoma and extracutaneous mastocytoma.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: CD33; CD33 antigen (gp67); CD33 molecule transcript; FLJ00391; gp67; Myeloid cell surface antigen CD33; sialic acid binding Ig-like lectin 3; Sialic acid-binding Ig-like lectin 3; Siglec-3
Gene Aliases: CD33; p67; SIGLEC-3; SIGLEC3
UniProt ID: (Human) P20138
Entrez Gene ID: (Human) 945
Molecular Function: cell adhesion molecule cytokine receptor defense/immunity protein immunoglobulin receptor superfamily immunoglobulin superfamily cell adhesion molecule membrane-bound signaling molecule myelin protein receptor signaling molecule structural protein