Water-mediated interactions influence the binding of thapsigargin to sarco/endoplasmic reticulum calcium adenosinetriphosphatase

Eleonora S Paulsen, Jesper Villadsen, Eleonora Tenori, Huizhen Liu, Ditte Fast Bonde, Mette Alstrup Lie, Maike Bublitz, Claus Olesen, Henriette Elisabeth Autzen, Ingrid Dach, Pankaj Sehgal, Poul Nissen, Jesper Vuust Møller, Birgit Schiøtt, SB Christensen

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

24 Citationer (Scopus)

Abstract

A crystal structure suggests four water molecules are present in the binding cavity of thapsigargin in sarco/endoplasmic reticulum calcium ATPase (SERCA). Computational chemistry indicates that three of these water molecules mediate an extensive hydrogen-bonding network between thapsigargin and the backbone of SERCA. The orientation of the thapsigargin molecule in SERCA is crucially dependent on these interactions. The hypothesis has been verified by measuring the affinity of newly synthesized model compounds, which are prevented from participating in such water-mediated interactions as hydrogen-bond donors
OriginalsprogEngelsk
TidsskriftJournal of Medicinal Chemistry
Vol/bind56
Nummer9
Sider (fra-til)3609-3619
Antal sider9
ISSN0022-2623
DOI
StatusUdgivet - apr. 2013

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