The invention related to a tRNA synthetase capable of binding delta-substituted lysine, wherein said tRNA synthetase comprises amino acid sequence corresponding to the amino acid sequence of at least L271 to Y349 of MbPyIRS, wherein said sequence comprises 5 or fewer substitutions within the amino acid sequence corresponding to the amino acid sequence of at least L271 to Y349 of MbPyIRS; and wherein said synthetase comprises W at amino acid position 349 relative to MbPyIRS.
该发明涉及一种能够结合δ-取代赖
氨酸的tRNA合成酶,其中该tRNA合成酶包括与MbPyIRS的至少
L271到Y349的
氨基酸序列相对应的
氨基酸序列,其中该序列在与MbPyIRS的至少
L271到Y349的
氨基酸序列相对应的
氨基酸序列内仅包含5个或更少的替换;并且该合成酶在相对于MbPyIRS的
氨基酸位置349处包含W。