Redox-based reagents for chemoselective methionine bioconjugation
- Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
- Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; ShanghaiTech Univ., Shanghai (China). School of Physical Science and Technology
- Univ. of California, San Francisco, CA (United States). Dept. of Pharmaceutical Chemistry
- Univ. of California, Berkeley, CA (United States). California Inst. for Quantitative Biosciences
- Univ. of California, San Francisco, CA (United States). Dept. of Pharmaceutical Chemistry and Dept. of Cellular and Molecular Pharmacology
- Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
- Univ. of California, Berkeley, CA (United States). Howard Hughes Medical Inst., Dept. of Chemistry and Dept. of Molecular and Cell Biology; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
Cysteine can be specifically functionalized by a myriad of acid-base conjugation strategies for applications ranging from probing protein function to antibody-drug conjugates and proteomics. In contrast, selective ligation to the other sulfur-containing amino acid, methionine, has been precluded by its intrinsically weaker nucleophilicity. In this work, we report a strategy for chemoselective methionine bioconjugation through redox reactivity, using oxaziridine-based reagents to achieve highly selective, rapid, and robust methionine labeling under a range of biocompatible reaction conditions. We highlight the broad utility of this conjugation method to enable precise addition of payloads to proteins, synthesis of antibody-drug conjugates, and identification of hyperreactive methionine residues in whole proteomes.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Inst. of Health (NIH); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1465412
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6325 Vol. 355; ISSN 0036-8075
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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