Anti-Human CD33 Nanobody (SAA2052)

Description: Anti-Human CD33 Nanobody (SAA2052) [SAA2052] (RA13907) is a alpaca monoclonal antibody detecting CD33 in ELISA, FCM. Suitable for Human and Cynomolgus.
Highlights:
• Flow Cytometry — Validated for flow cytometry applications.
Host species: Alpaca
Isotype: VHH-8His-Cys-tag
Species reactivity: Human, Cynomolgus
Form: Liquid
Storage buffer: 0.01M PBS, pH 7.4.
Concentration: 1 mg/ml
Purity: >95% as determined by SDS-PAGE.
Clonality: Monoclonal
Applications: ELISA, FCM
Target: Myeloid cell surface antigen CD33, Sialic acid-binding Ig-like lectin 3, Siglec-3, CD33, gp67, SIGLEC3
Purification: Purified by Nickel column.
Endotoxin level: Please contact with the lab for this information.
Stability and Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Store at 4°C short term (1-2 weeks). Store at -20°C 12 months. Store at -80°C long term.
Alternative Names:
Background: Myeloid cell surface antigen CD33 is a ~39 kDa protein. Sialic-acid-binding immunoglobulin-like lectin (Siglec) that plays a role in mediating cell-cell interactions and in maintaining immune cells in a resting state. Preferentially recognizes and binds alpha-2,3- and more avidly alpha-2,6-linked sialic acid-bearing glycans. Upon engagement of ligands such as C1q or syalylated glycoproteins, two immunoreceptor tyrosine-based inhibitory motifs (ITIMs) located in CD33 cytoplasmic tail are phosphorylated by Src-like kinases such as LCK. These phosphorylations provide docking sites for the recruitment and activation of protein-tyrosine phosphatases PTPN6/SHP-1 and PTPN11/SHP-2. In turn, these phosphatases regulate downstream pathways through dephosphorylation of signaling molecules. CD33 is the therapeutic target of gemtuzumab ozogamicin (Mylotarg).
References:
1. Vitale, C. et al. (1999) Proceedings of the National Academy of Sciences of the United States of America 96, 15091-6. PMID: 10611343
2. Vitale, C. et al. (2001) Proceedings of the National Academy of Sciences of the United States of America 98, 5764-9. PMID: 11320212
3. Lajaunias, F. et al. (2005) European journal of immunology 35, 243-51. PMID: 15597323
4. Freeman, SD. et al. (1995) Blood 85, 2005-12. PMID: 7718872
5. Paul, SP. et al. (2000) Blood 96, 483-90. PMID: 10887109
6. Son, M. et al. (2017) Scientific reports 7, 270. PMID: 28325905
7. Taylor, VC. et al. (1999) The Journal of biological chemistry 274, 11505-12. PMID: 10206955
8. Ulyanova, T. et al. (1999) European journal of immunology 29, 3440-9. PMID: 10556798
Note: For research use only.