Re: [ccp4bb] PILATUS data collection

2013-05-08 Thread Graeme Winter
A couple of extra comments on top of Bob's rather comprehensive recommendations, based purely on actually looking at Pilatus data (I mean *looking*) When you are inspecting the images looking at them at 100% size is important: spots are small relative to pixels and the point spread is essentially

Re: [ccp4bb] how to deal 3 twin-related domains

2013-05-08 Thread Andrea Thorn
Dear Fulvio, what did your L-Test with the unmerged (P1) data look like? In order to use twin refinement you should be sure that the structure is twinned. Did you try all possible subgroups of R3? Generally, a triplet can be treated as any other pseudo-merohedral twin, given it really is a

Re: [ccp4bb] PILATUS data collection

2013-05-08 Thread Francis E. Reyes
Graeme and Bob, Wow... It's great to learn from actual experiences. Thanks much for this write up. If this were stackoverflow, +1. F On May 8, 2013, at 12:32 AM, Graeme Winter graeme.win...@gmail.com wrote: A couple of extra comments on top of Bob's rather comprehensive

[ccp4bb] Off-topic (SPR)

2013-05-08 Thread Jahan Alikhajeh
Dear pals, Sorry for my off-topic question but its been a while I am challenging to get a 15 kDa protein coated on CM5 chip. Calculated PI of protein is 5.9 I tried Acetate buffer pH5.2 and 3.8 for coating under normal procedure of Biacore. After immobilization I saw this message: response

Re: [ccp4bb] Off-topic (SPR)

2013-05-08 Thread Zhijie Li
Hi Jahan, Maybe you are using a new model of BiaCore. Our old BiaCore X never cares to tell us how to do our experiment. However if your RU did go below that of the empty chip, then maybe you really didn't get anything conjugated. The pH 3.8 condition is not good for the amine coupling

[ccp4bb] question about CCP4 scripts

2013-05-08 Thread Joe Chen
Hi All, I am trying to write a shell script to streamline a few steps, one of which is Unique, see below. As you can see, this program requires symmetry and cell parameters. In CCP4 GUI Scalepack2mtz, these info are automatically extracted from .sca file (first two lines). But I don't know if

Re: [ccp4bb] question about CCP4 scripts

2013-05-08 Thread jan
Hi Joe, this line of code for csh/tcsh is awfully rickety-raggedy, it does the trick though. Jan setenv spacegroup P3121 setenv noresidues 350 setenv lambda 1.5418 set unitcell = `head -3 ../hkl/output.sca | tail -1 | cut -b 4-60` scalepack2mtz \ hklin ../hkl/output.sca \ hklout