[ccp4bb] Restrained refinement problem

2012-03-11 Thread Dipankar Manna
Dear All, As I am practicing new in the crystallography, I am facing some difficulties in refining the ligand bound structure. Protein I am working with has SG P212121, it's a dimer. I fitted the ligand on the density with COOT-->calculate-->Model/Fit/Refine-->Rotate/Translate Zone. Then I merg

[ccp4bb] recombinant sources of N-glycanase

2012-03-11 Thread Pascal Egea
Hi All, We are trying to deal with a eukaryotic membrane protein that crystallizes but, as usual, diffracts poorly so far. As it is heavily glycosylated, we are considering enzymatic deglycosylation. Does anyone know about a recombinant source of N-glycanase ; we would like to prepare it ourselves

Re: [ccp4bb] Help! weird thing

2012-03-11 Thread Garib N Murshudov
Hi Could you please check: 1) If there is psedotranslation. It could be done by using sfcheck, molrep, ctruncate or calculating patterson map and displaying using coot at 8-10 sigma level (it is my favourite method for analysis of pseudo translations), whole unit cell ( a bit bigger than whole