For anyone who is interested, I meant to include a reference to the PNAS paper that has just come out (web-only early release) describing the wide search MR strategy we've developed:
Stokes-Rees, Sliz Protein structure determination by exhaustive search of Protein Data Bank derived databases Proc. Nat'l Academy of Sciences doi:10.1073/pnas.1012095107 http://www.pnas.org/content/early/2010/11/17/1012095107 Ian
