Re: [ccp4bb] From non-twinned to twinned?

2012-01-04 Thread Zhiyi Wei
Thank you for all the quick reply. Here are the additional information about the crystal. The crystal was frozen and shot in synchrotron. The collection was 1degree/frame. The space group and unit cell are P21 and a=70 b=165 c=170 alpha=90 beta=90.1 gamma=90. I processed the data in P1 first (I di

[ccp4bb] Postdoctoral position in structural biology of receptors

2012-01-04 Thread Vanessa Ruta
The laboratories of Vanessa Ruta (The Rockefeller University) and Dr. Filippo Mancia (Columbia University Medical Center) are looking for a talented and highly motivated structural biologist for a postdoctoral position to work on a collaborative project to determine the structure and function of

[ccp4bb] Jurassic Park Research Center: opening for protein crystallographer

2012-01-04 Thread Ken Prehoda
The Prehoda Lab at the University of Oregon has an opening for a postdoctoral fellow with a background in protein crystallography. The successful applicant will investigate the mechanisms of protein domain evolution, in part by determining the structures of proteins from 600 million year old res

Re: [ccp4bb] Open position at Bristol-Myers Squibb (Princeton, NJ, USA) Third time is the charm?

2012-01-04 Thread Miguel Ortiz Lombardia
El 04/01/12 21:21, Artem Evdokimov escribió: > Wow. > > Harsh interview criteria! It's a relief to know that I don't need a job, > cause I wouldn't pass. > > Artem > Dear Artem, You see, using one's creativity to by-pass a robotic application server to make a few, direct, clear, concise questi

Re: [ccp4bb] Open position at Bristol-Myers Squibb (Princeton, NJ, USA) Third time is the charm?

2012-01-04 Thread Artem Evdokimov
Wow. Harsh interview criteria! It's a relief to know that I don't need a job, cause I wouldn't pass. Artem On Jan 4, 2012 1:36 PM, "Sheriff, Steven" wrote: > CONTACT ME ONLY IF YOU HAVE TECHNICAL DIFFICULTIES WITH THE LINK OR THE > ONLINE APPLICATION PROCESS. DESCRIBE YOUR PROBLEM AND I WILL F

Re: [ccp4bb] From non-twinned to twinned?

2012-01-04 Thread Jens Kaiser
What are your cell constants and space group? It sounds to me you misindexed and then artificially "twinned" your structure by integrating/merging in too high of a symmetry. I've seen that happen for primitive hexagonal which was actually C-centered monoclinic. Also, in my experience this is more l

Re: [ccp4bb] Open position at Bristol-Myers Squibb (Princeton, NJ, USA) Third time is the charm?

2012-01-04 Thread Sheriff, Steven
CONTACT ME ONLY IF YOU HAVE TECHNICAL DIFFICULTIES WITH THE LINK OR THE ONLINE APPLICATION PROCESS. DESCRIBE YOUR PROBLEM AND I WILL FORWARD IT TO BMS HUMAN RESOURCES. SENDING ANYTHING ELSE DIRECTLY TO ME WILL BE PERCEIVED AS AN INABILITY TO FOLLOW SIMPLE DIRECTIONS AND CAUSE TO CONSIDER DISCARD

[ccp4bb] live streaming of ccp4 study weekend

2012-01-04 Thread charles . ballard
Dear All for all those not lucky enough to attend the CCP4 Study Weekend on "Data collection and processing" in Warwick there will be live streaming. This is at the link http://extrplay.dl.ac.uk/ kicking off with the what's new session at 9:00am GMT. The main event starts at 11:00am GMT. The

Re: [ccp4bb] From non-twinned to twinned?

2012-01-04 Thread Jacob Keller
Need more info: how many degrees per frame? Also, on integration, do various stats change over the 'sets? JPK On Wed, Jan 4, 2012 at 7:42 AM, Zhiyi Wei wrote: > Dear all, > > I recently collected a dataset (~2000 frames) from a single crystal. > If merge first 600 frames (sca1) or last 600 frame

Re: [ccp4bb] Superpose problem

2012-01-04 Thread Antony Oliver
Dear Tong, I actually raised this point with the developers of Phaser a while back, at a CCP4 meeting, as the wording and nomenclature can be a little confusing at times. Molecular replacement in Phaser can be done with a single structure, or an ensemble or "group" of structures (all of which

[ccp4bb] From non-twinned to twinned?

2012-01-04 Thread Zhiyi Wei
Dear all, I recently collected a dataset (~2000 frames) from a single crystal. If merge first 600 frames (sca1) or last 600 frames (sca2), Rmerge values from scalepack seem to be ok (~10%) though rejection ratios are high (~5%). But if I merge all frames together, Rmerge value goes up to ~20% and

Re: [ccp4bb] Superpose problem

2012-01-04 Thread herohonan
Thank you for your reply! But I still wonder the differences between "Add superimposed PDB file to the ensemble" and "Add ensemble" in Phaser program and when to use the former. If I want to search for a complex model, I often just click the "Add ensemble" till completing the search model. --

Re: [ccp4bb] How to add add atoms by Coot

2012-01-04 Thread Eleanor Dodson
Add an ATOM AT THE POINTER - call to water I guess -write it to your coordinate file, then redo the refinement - the green blob should disappeat. Could that O pointing towards the grenn blob be flipped though? there is a water in rather a strange position opposite, although the picture might