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Human Siglec-3/CD33 (Research Grade Gemtuzumab Biosimilar) Antibody

Catalog #: MAB9635 Datasheet / COA / SDS
Recombinant Monoclonal Antibody For Research Use Only
Catalog # Availability Size / Price Qty
MAB9635-100
MAB9635-SP
Detection of Siglec-3/CD33 on U937 Human Cell Line by Flow Cytometry.
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Human Siglec-3/CD33 (Research Grade Gemtuzumab Biosimilar) Antibody Summary

Specificity
Detects human Siglec‑3/CD33 based on Gemtuzumab therapeutic antibody. This non-therapeutic antibody uses the same variable region sequence as the therapeutic antibody Gemtuzumab. This product is for research use only.
Source
Recombinant Monoclonal Human IgG1 Clone # Hu9a
Purification
Protein A or G purified from cell culture supernatant
Immunogen
Human Siglec‑3/CD33
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25 µg/106 cells
See below
CyTOF-ready
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
 

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Flow Cytometry Detection of Siglec-3/CD33 on U937 Human Cell Line antibody by Flow Cytometry. View Larger

Detection of Siglec-3/CD33 on U937 Human Cell Line by Flow Cytometry. U937 Human histiocytic lymphoma cell line was stained with Human Anti-Human Siglec-3/CD33 (Research Grade Gemtuzumab Biosimilar) Monoclonal Antibody (Catalog # MAB9635, filled histogram) or irrelevant antibody (open histogram) followed by APC-conjugated Anti-Human IgG Secondary Antibody (Catalog # F0135). View our protocol for Staining Membrane-associated Proteins.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Siglec-3/CD33

Gemtuzumab is a biosimilar directed against the extracellular domain of CD33. This product constitutes the immunogen used for the anti-Idiotype catalog numbers MAB9617 and MAB96171. The biotinylated antibody (catalog number FAB9635B) can be used in flow cytometry or various assay format to measure Siglec‑3/CD33 expression and can be detected by conjugated streptavidin.   

Long Name
Sialic Acid Binding Ig-like Lectin 3
Entrez Gene IDs
945 (Human); 12489 (Mouse); 102117580 (Cynomolgus Monkey)
Alternate Names
CD33 antigen (gp67); CD33 antigen; CD33 molecule; CD33; FLJ00391; gp67; myeloid cell surface antigen CD33; p67; sialic acid binding Ig-like lectin 3; Sialic acid-binding Ig-like lectin 3; Siglec3; Siglec-3; SIGLEC3gp67

Product Datasheets

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FAQs

  1. Does this Biosimilar antibody have the same sequence as the therapeutic antibody?

    • The Biosimilar antibody has the same variable region and constant region sequence as the therapeutic antibody.

  2. What is a Biosimilar antibody?

    • A Biosimilar antibody is a non-therpeutic, recombinantly-expressed antibody which has the same sequence as the corresponding therapeutic antibody.  It is for research use only. The nomenclature of the Biosimilar antibody includes the name of the therapeutic antibody.  For example, Catalog # MAB9577 is called Human EGFR (Research Grade CetuxiMab Biosimilar) antibody.

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