Hi Sean, Not an answer to your question but have you looked into model building with TEXTAL? I am not sure about 3.6Ang resolution data but it might be worth looking into.
Raji ---------Included Message---------- >Date: 13-feb-2008 16:54:33 -0500 >From: "Sean Johnson" <[EMAIL PROTECTED]> >To: <CCP4BB@JISCMAIL.AC.UK> >Subject: [ccp4bb] secondary structure restraints > >I am trying to build and refine a model into 3.6 angstrom Se-met phased >maps. What is the best way to define secondary structure restraints for >refinement? (hydrogen bonds? backbone torsion angles?) Are there any >tools available to help me define restraints for a specified region, or >do I have to define each restraint one at a time (which strikes me as a >very tedious exercise). > >Any other thoughts on best practices for low-resolution model building >and refinement would also be appreciated. > >Thanks, >Sean > >-- >Sean Johnson, PhD >R. Gaurth Hansen Assistant Professor >Utah State University >Department of Chemistry and Biochemistry >0300 Old Main Hill >Logan, UT 84322-0300 >(435) 797-2089 >(435) 797-3390 (fax) >[EMAIL PROTECTED] > > ---------End of Included Message----------