Re: [ccp4bb] H-Bond Energy Vs. Length/Geometry/Charge?

2014-06-09 Thread Robbie Joosten
Hi Jacob, Modeling programs need to take hydrogen bonding into account in their force fields so they typically have good measures for hydrogen bonds. I personally use YASARA to get the numbers you want. This is also what PDB_REDO uses to give you the hydrogen bond energy and the the number of h

[ccp4bb] H-Bond Energy Vs. Length/Geometry/Charge?

2014-06-09 Thread Keller, Jacob
Dear Crystallographers, Is anyone aware of a relationship between H-bond distance and energy thereof, maybe with a little geometry and +/- charge thrown in? I am looking at a structure with many H-bonds to a ligand, and wondered about the relative importance of each. JPK *

[ccp4bb] postdoctoral position at UMass Medical School

2014-06-09 Thread Korostelev, Andrei
Postdoctoral position in structural biology (crystallography and cryo-EM) opens at the University of Massachusetts Medical School (Korostelev Lab): http://labs.umassmed.edu/korostelevlab The focus of research in the lab is on translation and translation regulation, via structural visualization an

[ccp4bb] Pipettes for initial crystallization screening

2014-06-09 Thread Xiao Xiao
Dear all, Here's a very basic question -- I am doing some initial crystallization screening now but unfortunately our robot got broken and it will take a while to get funded for buying a new one:( So I have to set up all trays by hand. While it is still durable to use our current pipettes sets, wh

[ccp4bb] Postdoc positions

2014-06-09 Thread jie liu
Dear all NIH-funded post-doctoral associate positions in the Public Health Research Institute at Rutgers New Jersey Medical School are available to study the mechanisms of HIV-1 membrane fusion and assembly as well as their inhibition. The associate will report to Dr. Min Lu and work in his str

[ccp4bb] Post-doctoral job position in membrane protein structural biology and biophysics (CPC-BASEL/NIBR/NOVARTIS)

2014-06-09 Thread Veli-Pekka Jaakola
Post-doctoral job position opening in membrane protein structural biology and biophysics I have a post-doctoral position open in my lab (membrane protein lab/structural biophysics group at the CPC/NIBR/Novartis, Basel, Switzerland). The research of the lab is focused on understanding GPCRs using

Re: [ccp4bb] Bfactors too high after TLS refinement

2014-06-09 Thread Ian Tickle
On 9 June 2014 09:29, Carles Palanca i Garcia wrote: > Hi again and thanks for your answers. > > I have been considering your comments and as I see it I have three options > A) Leave the pdb with no TLS refinement, as I already have good R values > without them. > B) Perform the TLS refinement an

Re: [ccp4bb] Bfactors too high after TLS refinement

2014-06-09 Thread Carles Palanca i Garcia
Hi again and thanks for your answers. I have been considering your comments and as I see it I have three options A) Leave the pdb with no TLS refinement, as I already have good R values without them. B) Perform the TLS refinement and not worry about the high B-factors since it is normal that the