Enzyme-catalyzed macrocyclization of long unprotected peptides.
Enzyme-catalyzed macrocyclization of long unprotected peptides.
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DOI:
10.1021/ol501609y
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发表时间:
2014-07-18
期刊:
影响因子:
5.2
通讯作者:
Pentelute, Bradley L.
中科院分区:
文献类型:
--
作者:
Zhang, Chi;Dai, Peng;Spokoyny, Alexander M.;Pentelute, Bradley L.
A glutathione S-transferase (GST) catalyzed macrocyclization reaction for peptides up to 40 amino acids in length is reported. GST catalyzes the selective SNAr reaction between an N-terminal glutathione (GSH, γ-Glu-Cys-Gly) tag and a C-terminal perfluoroaryl-modified cysteine on the same polypeptide chain. Cyclic peptides ranging from 9 to 24 residues were quantitatively produced within 2 h in aqueous pH = 8 buffer at room temperature. The reaction was highly selective for cyclization at the GSH tag, enabling the combination of GST-catalyzed ligation with native chemical ligation to generate a large 40-residue peptide macrocycle.
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