Methods of modifying N-termini of a peptide or protein using transferases
申请人:The Trustees of the University of Pennsylvania
公开号:US09376700B2
公开(公告)日:2016-06-28
The invention includes a selective method of modifying the N-terminus of a protein using an aminoacyl tRNA transferase. In certain embodiments, the method comprises contacting a solution of the protein or peptide with a transferase and a derivative of a molecule, whereby the N-terminus of the protein or peptide is derivatized with the molecule.
申请人:The Trustees of the University of Pennsylvania
公开号:US20150140605A1
公开(公告)日:2015-05-21
The invention includes a selective method of modifying the N-terminus of a protein using an aminoacyl tRNA transferase. In certain embodiments, the method comprises contacting a solution of the protein or peptide with a transferase and a derivative of a molecule, whereby the N-terminus of the protein or peptide is derivatized with the molecule.
Expressed Protein Ligation at Methionine: N-Terminal Attachment of Homocysteine, Ligation, and Masking
作者:Tomohiro Tanaka、Anne M. Wagner、John B. Warner、Yanxin J. Wang、E. James Petersson
DOI:10.1002/anie.201302065
日期:2013.6.10
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 expressedprotein (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
一个有用的句柄:蛋白质半合成的一个主要限制是在天然化学连接反应中需要在连接位点使用 Cys。结果表明,转移酶可以将同型半胱氨酸传递到表达蛋白质的 N 端(参见方案)。同型半胱氨酸可用于连接反应,然后转化为 Met。这允许人们使用 MetArg 或 MetLys 基序作为半合成中的断开点。