N,N′-bis(4-azidobenzoyl) cystine—A cleavable photoaffinity reagent
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Add time:07/25/2019 Source:sciencedirect.com
A water-soluble, cleavable, heterobifunctional photoaffinity label has been synthesized in one step from N-hydroxysuccinimidyl 4-azidobenzoate and cystine. The resultant compound, N,N′-bis(4-azidobenzoyl) cystine [(ABC)2], reacts with protein sulfhydryl groups through disulfide exchange to generate photoactive derivatives. Since [35S]cystine of high specific activity is readily available, it is possible to produce highly radioactive (ABC)2. ABC-derivatized ovalbumin is antigenic in vivo, and monoclonal antibodies specific for ABC have been produced. The antigen binding site of these antibodies was covalently labeled with ABC.
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