Hi, Whether or not you’ll get anything useful from a 4.3 A MR solution depends on your question — maybe you’re interested in something large-scale like complex formation or domain movement, in which case it could tell you something.
In any case, it’s important to have a good starting model. Unless you have a higher-resolution crystal structure of the same protein, your best bet would be something like an AlphaFold model. Next, if you want to refine it, the structure will tend to get worse at that resolution unless you only allow it to change when required to agree with your data. There are tools for both Refmac and phenix.refine to use your good-quality starting model as a reference model, with local or torsion angle restraints, and you should be using these. Best wishes, Randy Read > On 21 Nov 2023, at 12:02, Yahui Liu <[email protected]> wrote: > > Dear all, > I got a protein crystal dataset of 4.3 A and would like to some the structure > with MR. > Now I am suffering with the refinement. I used both Refmac and Phenix. > > Someone could give me a hand or any suggestions? > > All the best > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 ----- Randy J. Read Department of Haematology, University of Cambridge Cambridge Institute for Medical Research Tel: +44 1223 336500 The Keith Peters Building Hills Road E-mail: [email protected] Cambridge CB2 0XY, U.K. www-structmed.cimr.cam.ac.uk ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
