Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 9, Issue 9, Pages 2479-2484Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0968-0896(01)00217-6
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Funding
- NIGMS NIH HHS [GM55843] Funding Source: Medline
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Here we describe the first example of a peptide chemical ligation reaction performed inside a living cell. A cell-based native chemical ligation approach was developed and used to generate a circular version of the N-terminal Src homology 3 (SH3) domain from the murine c-Crk adapter protein inside Escherichia coli cells. The in vivo cyclization reaction was extremely efficient and the resulting circular protein domain was fully biologically active and able to adopt the native SH3 folded structure. This work represents an important step towards the in vivo generation of small backbone cyclic peptides for use in basic biological research. (C) 2001 Elsevier Science Ltd. All rights reserved.
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