A study of the binding requirements of calyculin A and dephosphonocalyculin

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Volter, KE
Embrey, KJ
Pierens, GK
Quinn, RJ
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2001
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Abstract

The interactions of the okadaic acid class of compounds, with special emphasis on the solution structures of calyculin A and dephosphonocalyculin A with PP1 are reported. After examination of the interactions of all docked structures, a receptor based pharmacophore model for the interactions of the protein phosphatase inhibitors has been developed. Calyculin A or dephosphonocalyculin A can interact with the enzyme in either a manner similar to the reported crystal structure, or in an extended form. The inhibitors require two essential regions interacting with the hydrophobic region and the central metal binding regions of the enzyme. This simplified model is consistent with previously published models of the okadaic acid class of compounds with PP1.

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European Journal of Pharmaceutical Sciences

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12

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© 2001 Elsevier : Reproduced in accordance with the copyright policy of the publisher : This journal is available online - use hypertext links.

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Pharmacology and pharmaceutical sciences

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