Methods of producing and/or analyzing spectroscopically labeled proteins, e.g., proteins site-specifically labeled with NMR active isotopes, spin-labels, chelators for paramagnetic metals, and the like, are provided. The labeled proteins are produced in translation systems including orthogonal aminoacyl tRNA synthetase/tRNA pairs. Methods for assigning NMR resonances, e.g., methods using isotopically labeled proteins, are also provided.
提供了生产和/或分析光谱标记蛋白质的方法,例如用核磁共振活性同位素、自旋标记物、顺磁性
金属
螯合剂等进行位点特异性标记的蛋白质。标记的蛋白质在翻译系统中产生,包括正交
氨基酰 tRNA 合成酶/tRNA 对。还提供了分配核磁共振共振的方法,例如使用同位素标记蛋白质的方法。