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    • 30. 发明申请
    • Chemical Modification of Proteins
    • 蛋白质的化学修饰
    • US20160326212A1
    • 2016-11-10
    • US15070976
    • 2016-03-15
    • R.P. Scherer Technologies, LLC
    • Goncalo BernardesJustin ChalkerBenjamin Guy Davis
    • C07K1/113C07K1/02
    • C07K1/1133C07K1/02C07K1/026C07K1/107C07K1/13
    • The invention relates to methods for selectively converting a cysteine residue in a peptide or protein to the dehydroalanine (Dha) residue. The method also works on selenocysteine and substituted cysteine and selenocysteine residues, resulting in the Dha residue which may be converted to any natural or unnatural amino acid residue desired without the alteration of the remainder of the peptide or protein. The invention also allows ligation of a desired peptide at any point rather than at a point where there should be a naturally occurring cysteine, thereby allowing native chemical ligation to be used in the synthesis of peptides that do not contain cysteine. The methodology allows for the synthesis of very large peptides.
    • 本发明涉及将肽或蛋白质中的半胱氨酸残基选择性转化为脱氢丙氨酸(Dha)残基的方法。 该方法还适用于硒代半胱氨酸和取代的半胱氨酸和硒代半胱氨酸残基,导致Dha残基,其可以转化为任何天然或非天然氨基酸残基,而不改变肽或蛋白质的其余部分。 本发明还允许在任何点而不是在应当存在天然存在的半胱氨酸的位点连接所需的肽,从而允许天然化学连接用于合成不含半胱氨酸的肽。 该方法允许合成非常大的肽。