Site-specific isotopically-labeled proteins, amino acids, and biochemical precursors therefor
    5.
    发明授权
    Site-specific isotopically-labeled proteins, amino acids, and biochemical precursors therefor 有权
    位点特异性同位素标记的蛋白质,氨基酸和生化前体

    公开(公告)号:US06897337B2

    公开(公告)日:2005-05-24

    申请号:US10138620

    申请日:2002-05-03

    摘要: Site-specific isotopically-labeled valine, leucine, and isoleucine and biosynthetic precursors for these amino acids are provided. The amino acids are labeled with 13C or 14C at the methyl group carbon atom(s) most remote from the carboxyl group. Also disclosed are the biochemical precursors of these labeled amino acids, 2-keto-4-(nC)butyric acid and 2-keto-3-(nC-methyl)-4-(nC)-butyric acid in which n, at each occurrence, is 13 or 14.Also disclosed are proteins, protein fragments, and polypeptides containing these site-specifically isotopically labeled amino acids, and methods for preparing the biochemical precursors, the amino acids, and the proteins, protein fragments, and polypeptides.

    摘要翻译: 提供了位点特异性同位素标记的缬氨酸,亮氨酸和异亮氨酸以及这些氨基酸的生物合成前体。 氨基酸在最远离羧基的甲基碳原子上用13 C或14 C标记。 还公开了这些标记的氨基酸的生物化学前体,2-酮基-4-(叔丁基)丁酸和2-酮-3-(叔丁基)-3-甲基 )-4 - ((S)C) - 丁酸,其中每次出现时n为13或14.还公开了含有这些位点特异性同位素标记的氨基酸的蛋白质,蛋白质片段和多肽 ,以及用于制备生物化学前体,氨基酸和蛋白质,蛋白质片段和多肽的方法。