The environmental two-step.

نویسندگان

  • Trias Thireou
  • Vassilis Atlamazoglou
  • Manolis Levakis
  • Elias Eliopoulos
  • Athanassios Hountas
  • George Tsoucaris
  • Kostas Bethanis
چکیده

An important stage in macromolecular crystallography is that of phase extension and refinement when initial phase estimates are available from isomorphous replacement or anomalous scattering or other methods. For this purpose, an alternative method called the twin variables (TwiV) method has been proposed. The algorithm is based on alternately transferring the phase information between the twin variable sets. The phase extension and refinement is evaluated with the crystallographic symmetry test by deliberately sacrificing the spacegroup symmetry in the starting set, then using its re-appearance as a criterion for correctness. Here we present a software program (CrysTwiV) that runs on the web (freely available at: http://btweb.aua.gr/ crystwiv/) implementing the above-mentioned

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عنوان ژورنال:
  • Environmental Health Perspectives

دوره 104  شماره 

صفحات  -

تاریخ انتشار 1996