Compositions and methods for detecting protein sulfenylation

    公开(公告)号:US10718778B2

    公开(公告)日:2020-07-21

    申请号:US15313445

    申请日:2015-05-29

    Abstract: The present invention relates to methods for detecting sulfenylation within thiol groups in proteins, metabolites, or materials. Protein sulfenylation (Cys-SOH) describes the reversible post-translational modification of protein thiols by hydrogen peroxide, and plays a central role in oxidative signaling (see, e.g., Paulsen, C. E. & Carroll, K. S. 2013 Chemical Reviews 113, 4633-679). Growth factor stimulation activates NADPH oxidase enzymes, releasing a local burst of hydrogen peroxide, which transiently oxidizes the nuclcophilic cysteine of protein phosphatases and other proximal redox active thiols (see, e.g., Paulsen, C. E. et al., 2012 Nature Chemical Biology 8, 57-64). In addition to masking functional cysteine's, sulfenylation is also a critical intermediate towards irreversible cysteine oxidation.

    LANTHANIDE COMPLEX FORMULATIONS
    57.
    发明申请

    公开(公告)号:US20200155712A1

    公开(公告)日:2020-05-21

    申请号:US16752307

    申请日:2020-01-24

    Abstract: The present invention relates to a method of removal of metal ion impurities, such as calcium, from lanthanide metal complexes of macrocyclic chelators. The method uses a scavenger resin to remove metal ions, displaced from chelator, by an excess of lanthanide ions. Also provided is a method of preparation of MRI contrast agents, from the purified lanthanide metal complex, by the addition of a defined excess chelator.

    Lanthanide complex formulations
    59.
    发明授权

    公开(公告)号:US10576169B2

    公开(公告)日:2020-03-03

    申请号:US15531431

    申请日:2015-11-27

    Abstract: The present invention relates to a method of removal of metal ion impurities, such as calcium, from lanthanide metal complexes of macrocyclic chelators. The method uses a scavenger resin to remove metal ions, displaced from chelator, by an excess of lanthanide ions. Also provided is a method of preparation of MRI contrast agents, from the purified lanthanide metal complex, by the addition of a defined excess chelator.

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