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- W2064072639 abstract "Sulfa antibiotics (sulfonamides) are a group of molecules sharing the p-aminobenzenesulfonamide moiety. Sulfonamides are used in veterinary and human medicine. Sometimes, the meat or milk of medicated animals is contaminated with residual sulfonamides. Current analytical methods for sulfonamides are unfit for screening of food, because they are either too laborious, insensitive, or specific for a few sulfa compounds only. A rapid immunoassay for detection of all sulfas in a single reaction would thus be useful. Previously, we used protein engineering to improve the broad specificity of sulfa antibody 27G3. In this study, we improved the best mutant of the previous studies with site-directed mutagenesis. The new mutants recognized different sulfonamides with affinities sufficient for detection of all 13 tested sulfonamides below the MRL level. We furthermore demonstrated the functionality of one mutant in some real sample matrices. Keywords: Food safety; drug residues; group specificity; phage display; sulfonamides; directed mutagenesis" @default.
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- W2064072639 date "2003-12-11" @default.
- W2064072639 modified "2023-10-17" @default.
- W2064072639 title "Engineering of a Broad Specificity Antibody for Simultaneous Detection of 13 Sulfonamides at the Maximum Residue Level" @default.
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- W2064072639 doi "https://doi.org/10.1021/jf034951i" @default.
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