Fab-ZAP uses your primary human IgG antibody to target and eliminate cells that recognize your primary antibody. Fab-ZAP is made with a monovalent secondary antibody eliminating the possibility of cap formation, while preserving all the qualities that make an effective in vitro diagnostic tool. The antibodies used are affinity-purified polyclonal antibodies against both the heavy and light chain of human IgG. The antibody used in this product will cross-react across immunoglobulin classes and subclasses of the same species as they share the same light chain (either kappa or lambda). It also has an improved EC50 when directly compared to Hum-ZAP in a cytotoxicity assay.
Fab-ZAP human is a chemical conjugate of goat anti-human monovalent antibody and the ribosome-inactivating protein, saporin. It uses your human primary antibody to target and eliminate cells. This secondary conjugate is used to evaluate the potential of a primary antibody to internalize.
Fab-ZAP human is available individually (Cat. #IT-51) or as a kit (Cat. #KIT-51) which includes Fab-ZAP human, Saporin (Cat. #PR-01), Fab IgG-SAP (Cat. #IT-67) and reagents for developing a cytotoxicity assay.
Other ZAP Conjugates:
Need another ZAP Conjugate for your target? Check here for other species & targets including in vivo and in vitro options.
keywords: antibody, efficacy, immunotoxin, screening, internalization, saporin, Fab-ZAP, monovalent antibody, secondary conjugate, primary antibody, goat anti-human monovalent antibody
Streptavidin-saporin: Converting biotinylated materials into targeted toxins
Ancheta LR, Shramm PA, Bouajram R, Higgins D, Lappi DA (2023) Streptavidin-saporin: Converting biotinylated materials into targeted toxins. Toxins 15(3):181. doi: 10.3390/toxins15030181
Summary: This manuscript describes the myriad of ways Streptavidin-ZAP is used and how this technology supports the scientific process of ‘Molecular Surgery’ and progress in research and drug development. Insights from publications and research performed using Streptavidin-ZAP and its impact on academia and industry for research and drug development are presented.
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Related Products: Streptavidin-ZAP (Cat. #IT-27)
Evaluate Potential Targeting Molecules.
Kohls M (2006) Evaluate Potential Targeting Molecules. Nature Methods
Summary: Targeted toxins -- targeting agents conjugated to saporin -- are widely used to eliminate specific cell populations both in vitro and in vivo. For these molecules to be effective, it is vital that the targeting component of the conjugate specifically binds the cells of interest. A secondary conjugate, Streptavidin-ZAP, has been created by attaching the toxin saporin to streptavidin. The user can combine primary biotinylated material with Streptavidin-ZAP to quickly and economically screen potential targeting molecules for internalization and specificity. Once the appropriate targeting molecule is identified, a direct conjugation with saporin can be performed.
Related Products: Streptavidin-ZAP (Cat. #IT-27)
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Verified User –
I had the pleasure of ordering the FAB-ZAP human and mouse kit from your company a few months ago. The results achieved with this kit have been truly outstanding and I appreciate the quality of your products.
Verified User –
I have tried your Fab-Zap assay here recently and your protocols are spot on. It worked great.