25.
    发明专利
    未知

    公开(公告)号:TR200102842T2

    公开(公告)日:2002-03-21

    申请号:TR200102842

    申请日:2000-04-07

    Applicant: ABBOTT LAB

    Abstract: Site-specific isotopically-labeled valine, leucine, and isoleucine and biosynthetic precursors for these amino acids are provided. The amino acids are labeled with C or C 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-( C)butyric acid and 2-keto-3-( C-methyl)-4-( C)-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.

    27.
    发明专利
    未知

    公开(公告)号:PT866967E

    公开(公告)日:2000-04-28

    申请号:PT96940448

    申请日:1996-11-13

    Applicant: ABBOTT LAB

    Abstract: A method for designing and forming a ligand which binds to a specific target molecule comprises the steps of: (a) identifying a first ligand moiety that binds to the target molecule using two-dimensional N/ H NMR correlation spectroscopy; (b) identifying subsequent ligand moieties that bind to the target molecule using two-dimensional N/ H NMR correlation spectroscopy; (c) forming a complex of the first and subsequent ligand moieties to the target molecule; (d) determining the three-dimensional structure of the complex and, thus, the spatial orientation of the first and subsequent ligand moieties on the target molecule; and (e) linking the first and subsequent ligand moieties to form a new ligand to maintain the spatial orientation of the ligand moieties.

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