CD33 Antibody

• Catalog Number: orb699826
• Category: Antibodies
• Description: Recognizes a 67kDa glycoprotein, which is identified as CD33. It 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; 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. CD33 is expressed on myeloid progenitors, monocytes, granulocytes, dendritic cells and mast cells. It is absent on platelets, lymphocytes, erythrocytes and hematopoietic stem cells.
• Clonality: Monoclonal
• Species/Host: Mouse
• Isotype: Mouse IgG2c, kappa
• Conjugation: Unconjugated
• Reactivity: Human
• Immunogen: A portion of amino acids 51-224 from the human protein was used as the immunogen for the CD33 antibody.
• UniProt ID: P20138
• Tested applications: IHC-P
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml for 30 minutes at RT
• Application notes: Optimal dilution of the CD33 antibody should be determined by the researcher.
• Antibody Type: Primary Antibody
• Clone Number: SIGLEC3/3600
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide
• Storage: Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
• Hazard Information: This CD33 antibody is available for research use only.
• Note: For research use only

IHC staining of FFPE human urothelial carcinoma with CD33 antibody (clone SIGLEC3/3600). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human colon carcinoma with CD33 antibody (clone SIGLEC3/3600). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human spleen with CD33 antibody (clone SIGLEC3/3600). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

Analysis of HuProt (TM) microarray containing more than 19000 full-length human proteins using CD33 antibody (clone SIGLEC3/3600). These results demonstrate the foremost specificity of the SIGLEC3/3600 mAb. Z- and S- score: The Z-score represents the strength of a signal that an antibody (in combination with a fluorescently-tagged anti-IgG secondary Ab) produces when binding to a particular protein on the HuProt (TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If the targets on the HuProt (TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-scores. The S-score therefore represents the relative target specificity of an Ab to its intended target.