Protein A/G purified from cell culture supernatant.
Accession号
P20138
状态
Liquid
保存溶液
0.01M PBS pH 7.4
Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
稳定性和存储
Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for frequent use. Store at -20 to -80°C for twelve months from the date of receipt.
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).
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
Flow-cytometry using anti-human CD33 antibody. Untransfected cells (blue Histogram) and Transfected cells (Yellow Histogram) were stained with an anti-human CD33 monoclonal antibody (Catalog: HB185016) at a concentration of 5 µg/ml for 30 mins at RT. After washing, bound antibody was detected using a Goat Anti-Human IgG H&L Polyclonal Antibody, FITC (abinScience: HF690414) and cells analysed on a NovoCyte Flow Cytometer.
