[ccp4bb] LabGenius Protein Scientist Job Opening

2019-08-28 Thread Nicola Evans
My company is currently hiring and I thought there would be some good overlap of skills with the talented people on this mailing list. At LabGenius, we’re building a platform to discover revolutionary biological medicines coupling wet-lab techniques with machine learning and automation. We have

[ccp4bb] LabGenius Jobs available - Biophysics and Data Engineer

2019-02-20 Thread Nicola Evans
These are not structural biology roles, but I thought there would be some overlap with the skills of people on this forum. We are looking for innovative people to join our startup company, LabGenius. We engineer proteins with both enhanced and entirely novel functionality with the use of machine

[ccp4bb] TEV Protease in low reducing agent?

2019-02-13 Thread Nicola Evans
I am interested in purifying proteins with 1 or 2 disulphide bonds, and have been using enterokinase to cleave off N-terminal tags but we have had issues with poor cleavage and want to try TEV cleavage instead. However TEV protease is usually kept in a high amount of DTT and I am concerned about

[ccp4bb] Adding Zinc to Protein

2018-12-09 Thread Nicola Evans
From a fluorescence scan it would appear a protein I am working on has zinc in it. The occupancy is likely to be very low however (a structural homologue has several zincs in the x-ray crystal data but at 0.5 occupancy), as there isn't anything obvious in the electron density map (perhaps some o

[ccp4bb] How to lift a ligand from one PDB into another

2018-10-08 Thread Nicola Evans
A while back I was shown in Coot how to take a ligand from one PDB and insert it into another one - this is really useful if you have superimposed a homologue and the ligand is in the perfect position. However I have forgotten how to do this! Could someone please remind me? Thanks in advance fo

[ccp4bb] 3D Structure Search

2018-02-15 Thread Nicola Evans
I have recently solved a novel structure which previously did not have any structural homologues (as related by sequence identity). I was wondering if anyone could recommend a 3D structural search engine? I used the Dali server which has been recommended to me in the past (and with past success)

[ccp4bb] Selenomethionine Risk Assessment

2017-09-22 Thread Nicola Evans
Hello all, I am intending to do selenomethionine labelling in E.coli, however my department have asked me for a risk assessment for the experiment due to the toxicity of the selenomethionine. It would be a great help to me if anyone out there already has one that they could email to me to look

[ccp4bb] CC(1/2) reference

2017-08-29 Thread Nicola Evans
Hello all, I have heard at several CCP4 meetings and also at Diamond training that a good "cut off" for CC(1/2) is around 0.3 and I/sig(I) is 0.2, but I am struggling to find any journal references to say this (other than demonstrating the merits of CC(1/2) over Rmeas). Can anyone point me in