[ccp4bb] Research Fellow in Structural Virology

2012-09-28 Thread Fass
Dear BB readers, I am seeking a talented and highly motivated post-doctoral researcher to join the Structural Virology laboratory at Monash University. The successful candidate will have a recent PhD in biochemistry or related area and a promising track record in structural biology. Candidates w

Re: [ccp4bb] Space group choice with respect to physical plausability

2012-09-28 Thread Herman . Schreuder
Dear Harm, In my experience there is no use in modeling 4.5% twinning. It will not change the refinement and is most likely an artefact. IMHO you have the following options: 1) refine in P3221 with overlapping alternative conformations. You could also give the clashing chains an occupancy of 0.5

Re: [ccp4bb] Space group choice with respect to physical plausability

2012-09-28 Thread Harm Otten
Thanks for the feedback. Twinning is found to be 4.5% with phenix.xtriage. I shall model it, even though I am not so eager to use that option in Refmac. I cut the N-terminal in one and used modeled it for the other monomer in P 32, but were not able to refine it better. The 2-fold symmetry is event