Anti-CD33/Siglec-3 Antibody, clone 1D10 ZooMAb^® Rabbit Monoclonal

This product aligns with one or more of the 12 Principles of Green Chemistry. This antibody is Preservative-free, produced without the harm or sacrifice of animals and exceptionally stable to allow for ambient shipping and storage if needed and thus aligns with "Waste Prevention", "Designing Safer Chemicals" and "Design for Energy Efficiency". Click here for more information.

Myeloid cell surface antigen CD33 (UniProt: P20138; also known as Sialic acid-binding Ig-like lectin 3, Siglec-3, gp67, CD33) is encoded by the CD33 (also known as SIGLEC3) gene (Gene ID: 945) in human. CD33 is a disulfide-linked homodimeric, single-pass type I membrane glycoprotein that is synthesized with a signal peptide (aa 1-17), which is subsequently cleaved off to generate the mature form that contains an extracellular domain (aa 18-259), a transmembrane domain (aa 260-282), and a cytoplasmic domain (aa 283-364). In its extracellular region it contains one Ig-like V-type domain (aa 19-135) and an Ig-Like C2 type domain (aa 145-228). In its cytoplasmic domain it has two ITIM motifs (aa 338-343 and 356-361) that are involved in modulation of cellular responses. These motifs can be phosphorylated by Src-like kinases and phosphorylated ITIM motifs can bind to SH2 domains of several SH2-containing phosphatases. Phosphorylation of CD33 by LCK on tyrosine 340 is involved in its binding to PTPN6 and PTPN11. CD33 is mainly expressed in monocytic/myeloid lineage cells. Its expression is also observed on microglial cells in the brain. It plays a role in mediating cell-cell interactions and in maintaining immune cells in a resting state. It is present in a vast majority of subjects with Acute Myeloid Leukemia (AML) but is absent from pluripotent hematopoietic stem cells. This ZooMAb^® recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals. (Ref.: Walter, RB., et al. (2012). Blood. 119(26); 6198-6208; Pérez-Oliva, AB., et al. (2011). Glycobiology. 21(6); 757-770; Taylor, VC., et al. (1999). J. Biol. Chem. 274(17); 11505-11512).

ZooMAb^® antibodies represent an entirely new generation of recombinant monoclonal antibodies. Each ZooMAb^® antibody is manufactured using our proprietary recombinant expression system, purified to homogeneity, and precisely dispensed to produce robust and highly reproducible lot-to-lot consistency. Only top-performing clones are released for use by researchers. Each antibody is validated for high specificity and affinity across multiple applications, including its most commonly used application. ZooMAb^® antibodies are reliably available and ready to ship when you need them.

KLH-conjugated linear peptide corresponding to 16 amino acids from the extracellular domain of human CD33/Siglec-3.

Quality Control Testing

Evaluated by Western Blotting in U937 cell lysate.

Western Blotting Analysis: A 1:1,000 dilution of this antibody detected CD33/Siglec-3 in U937 cell lysate.

Tested Applications

Western Blotting Analysis: A 1:1,000 dilution from a representative lot detected CD33/Siglec-3 in lysates from EL4 cells and Rat spleen tissue, and His-tagged recombinant fragment of Human CD33/Siglec-3.

Immunohistochemistry (Paraffin) Analysis: A 1:1,000 dilution from a representative lot detected CD33/Siglec-3 in Human tonsil tissue sections.

Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected CD33/Siglec-3 in THP-1 cells.

Flow Cytometry Analysis: 1 µg from a representative lot detected CD33/Siglec-3 in one million Human peripheral blood mononuclear cells (PBMC).

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user.

Clone 1D10 is a ZooMAb^® rabbit recombinant monoclonal antibody that specifically detects CD33/Siglec-3. It targets an epitope within 16 amino acids from the extracellular domain.

Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS with 5% Trehalose, normal appearance a coarse or translucent resin. The PBS/trehalose components in the ZooMAb formulation can have the appearance of a semi-solid (bead like gel) after lyophilization. This is a normal phenomenon. Please follow the recommended reconstitution procedure in the data sheet to dissolve the semi-solid, bead-like, gel-appearing material. The resulting antibody solution is completely stable and functional as proven by full functional testing. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 µL.

Recommend storage of lyophilized product at 2-8°C; Before reconstitution, micro-centrifuge vials briefly to spin down material to bottom of the vial; Reconstitute each vial by adding 25 µL of filtered lab grade water or PBS; Reconstituted antibodies can be stored at 2-8°C, or -20°C for long term storage. Avoid repeated freeze-thaws.

Reconstitute lyophilized antibody pellet with 25μL of ultrapure water or Phosphate Buffered Saline (PBS). Please refer to our reconstitution protocol and the specific application guidance on the suggested starting dilutions and sample type.

ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.