Inhibition of phosphatase activity by positively-charged cyclodextrins
M Ghosh1, T C Sanders, R Zhang
1Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
Abstract:
[formula: see text] Aminocyclodextrins are known to bind phosphate esters such as phosphotyrosine and p-nitrophenyl phosphate. This paper describes the inhibition of phosphate ester hydrolysis, as catalyzed by lambda-protein phosphatase and acid phosphatase, that is caused by such binding interactions. ROESY studies provide structural information about the cyclodextrin-aryl phosphate complexes. In addition, these experiments are used to generate approximations of the rates of dissociation of the noncovalent complexes.
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