Expressed protein ligation at methionine: N-terminal attachment of homocysteine, ligation, and masking.
Expressed protein ligation at methionine: N-terminal attachment of homocysteine, ligation, and masking.
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DOI:
10.1002/anie.201302065
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发表时间:
2013-06-10
影响因子:
16.6
通讯作者:
Petersson, E. James
中科院分区:
文献类型:
--
作者:
Tanaka, Tomohiro;Wagner, Anne M.;Warner, John B.;Wang, Yanxin J.;Petersson, E. James
A useful handle: One major limitation of protein semi‐synthesis is the need for Cys at the ligation site in native chemical ligation reactions. It is shown that a transferase enzyme can deliver homocysteine to the N‐terminus of an expressed protein (see scheme). Homocysteine can be used in a ligation reaction and then converted to Met. This allows one to use the MetArg or MetLys motif as a point of disconnection in semi‐synthesis.
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