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    • 97. 发明授权
    • Stable isotope-labeled aromatic amino acids, method for incorporating the same in target protein and method for NMR-structural analysis of proteins
    • 稳定同位素标记的芳香族氨基酸,将其与靶蛋白结合的方法和蛋白质的NMR结构分析方法
    • US07608248B2
    • 2009-10-27
    • US11414756
    • 2006-04-28
    • Masatsune KainoshoTsutomu Terauchi
    • Masatsune KainoshoTsutomu Terauchi
    • A61B5/055C12P13/04C12P9/00C07K1/00
    • C07C47/575C07B2200/05C07C47/54C07C229/08C07C229/36C07D209/20C07D233/64C07K1/00C12P21/02G01N24/08G01R33/465
    • The present invention herein provides, for instance, a stable isotope-labeled phenylalanine wherein a carbon atom of the phenyl group linked to an amino acid residue is 13C, 2 to 4 carbon atoms of the remaining 5 carbon atoms constituting the phenyl group are 12C atoms to which deuterium atoms are bonded, and the remaining carbon atoms are 13C atoms to which hydrogen atoms are linked, and a stable isotope-labeled tyrosine wherein a carbon atom of the phenyl group linked to an amino acid residue is 13C, the carbon atom bonded to the hydroxyl group (OH group) of the phenyl group is 12C or 13C, 2 to 4 carbon atoms of the remaining 4 carbon atoms constituting the phenyl group are 12C atoms to which deuterium atoms are bonded, and the remaining carbon atoms are 13C atoms to which hydrogen atoms are linked. The stable isotope-labeled amino acid permits the elimination of such a conventional problem concerning the complexity of the NMR signals ascribed to aromatic rings, the complexity being a principal cause of making the NMR analysis difficult, encountered when using the conventional uniformly labeled amino acid residue. Moreover, the isotope-labeled amino acid likewise permits the substantial improvement of the sensitivity thereof to the NMR spectroscopic analysis.
    • 本发明提供例如稳定同位素标记的苯丙氨酸,其中与氨基酸残基连接的苯基的碳原子为13 C,构成苯基的剩余5个碳原子的2至4个碳原子为12 C原子 氘原子键合在其上,剩余的碳原子是与氢原子连接的13 C原子,和与氨基酸残基连接的苯基的碳原子为13 C的稳定的同位素标记的酪氨酸,碳原子键合 苯基的羟基(OH基)为12℃或13℃,构成苯基的剩余4个碳原子的2〜4个碳原子为氘原子键合的12 C原子,剩余碳原子为13 C原子 氢原子连接在其上。 稳定的同位素标记的氨基酸允许消除关于归因于芳环的NMR信号的复杂性的常规问题,当使用常规的均匀标记的氨基酸残基时,复杂性是使NMR分析困难的主要原因 。 此外,同位素标记的氨基酸同样允许其对NMR光谱分析的敏感性的显着提高。