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Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO) (HB185026)

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Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO)

Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO)

Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO)

Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO)

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Datasheet
SDS

Overview

Catalog No.	HB185026
Description	Lintuzumab (HB185026) is a research-grade recombinant antibody targeting CD33. Produced in mammalian cells with native-like glycosylation. Highlights ●Research Grade — For PK/PD studies, assay development, and ADA research. ●Native Glycosylation — Mammalian expression ensures native-like patterns.
Species reactivity	Human
Applications	ELISA, Bioactivity: FACS, Functional assay, Research in vivo
Host species	Human
Isotype	IgG1-kappa
Expression system	Mammalian cells
Clonality	Monoclonal
Target	Myeloid cell surface antigen CD33, Sialic acid-binding Ig-like lectin 3, Siglec-3, CD33, gp67, SIGLEC3
Endotoxin level	Please contact the lab for this information.
Purity	>95% purity as determined by SDS-PAGE.
Purification	Protein A/G purified from cell culture supernatant.
Accession	P20138
Form	Liquid
Storage buffer	0.01M PBS pH 7.4 Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
Stability and Storage	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.
Alternate Names	225Ac-lintuzumab, HuM195, SGN-33, SMARTM195, HuM195, 166089-32-3
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). 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. Not suitable for clinical or therapeutic use.

Images

Bioactivity

Detects CD33 in indirect ELISAs.
SDS-PAGE

SDS-PAGE for Research Grade Lintuzumab.

References

Datasheet

Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO).pdf

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Anti-Human Siglec-3/CD33 Reference Antibody (Lintuzumab, RUO)