CD33 Antibody

• Catalog Number: orb1824682
• 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.
• Species/Host: Mouse
• Clonality: Monoclonal
• Clone Number: SIGLEC3/3597
• Tested applications: IHC-P
• Reactivity: Human
• Isotype: Mouse IgG2b, kappa
• Immunogen: A recombinant partial protein sequence (within amino acids 1-250) from the human protein was used as the immunogen for the SIGLEC3 antibody.
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
• Conjugation: Unconjugated
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide
• Hazard Information: This SIGLEC3 antibody is available for research use only.
• UniProt ID: P20138
• Storage: Aliquot the SIGLEC3 antibody and store frozen at -20°C or colder. Avoid repeated freeze-thaw cycles.
• Note: For research use only
• Expiration Date: 12 months from date of receipt.

SDS-PAGE analysis of purified, BSA-free SIGLEC3 antibody (clone SIGLEC3/3597) as confirmation of integrity and purity.

Analysis of a HuProt (TM) microarray containing more than 19, 000 full-length human proteins using SIGLEC3 antibody (clone SIGLEC3/3597). Z- and S- Score: The Z-score represents the strength of a signal that a monoclonal antibody (in combination with a fluorescently-tagged anti-IgG secondary antibody) 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 targets on 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-score. S-score therefore represents the relative target specificity of a mAb to its intended target. A mAb is considered to specific to its intended target, if the mAb has an S-score of at least 2.5. For example, if a mAb binds to protein X with a Z-score of 43 and to protein Y with a Z-score of 14, then the S-score for the binding of that mAb to protein X is equal to 29.

IHC staining of FFPE human lymph node tissue with SIGLEC3 antibody (clone SIGLEC3/3597). Inset: PBS used in place of primary Ab (secondary Ab negative control). HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human spleen tissue with SIGLEC3 antibody (clone SIGLEC3/3597). HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.