Re: [ccp4bb] LINK vs LINKR

2017-12-09 Thread Bernhard Rupp
Hmmm…. One wonders how difficult it is to ignore the ‘R’ which is enough in links to non-symmetry-related atoms. if (line(1:5).eq.'LINKR') line= 'LINK '//line (6:59) PS: does anyone else find that the ‘Major validation issues’ web part on PDBe deposition does not update correctly today?

Re: [ccp4bb] Protein toxicity or low expression

2017-12-09 Thread Pascal Egea
Hi Firdous,, As you mentioned they are many things to change and try. before changing vector it is more efficient in my opinion to change expression conditions (temperature, amount of IPTG, length of culture), culture medium (regular ones against M9 or auto induction media) and expression strains

Re: [ccp4bb] Protein toxicity or low expression

2017-12-09 Thread zaigham mahmood khan
Hey Firdous Yes, too much information can be confusing. I have expressed and purified over dozen of different proteins. I usually found in literature the protocol for the expression and purification of another homologous protein. That is the best way to start in my opinion. Some folks may want to

[ccp4bb] Protein toxicity or low expression

2017-12-09 Thread Firdous Tarique
Hello everyone. I am struggling with the solubility or expression of my proteins in BL21DE3 E.coli expression cells. In one of my construct I have a Sumo-His fusion at the n-terminal of my protein. After induction what I see is the expression of the Sumo tag only. My sequencing results are fine an

Re: [ccp4bb] LINK vs LINKR

2017-12-09 Thread Eleanor Dodson
Yes - I agree about the irritation, but the LINKR record is actally more informative than the LINK LINKR can point to a named LINK which involves angles as well as a distance.. I think LINKR defines a needed coordinate feature but how to get the wwwPDB to accept it??? E On 9 December 2017 at

[ccp4bb] LINK vs LINKR

2017-12-09 Thread Bernhard Rupp
Dear Developers, the TER issue in REFMAC seems to be fixed, but is really necessary that REFMAC places LINKR records instead of LINK records in the PDB header? The PDB does not recognize those, and although it's only a minor nuisance to fix them in an editor, one tends to forget this bet

Re: [ccp4bb] Van der waals force

2017-12-09 Thread Paul Emsley
On 09/12/2017 15:56, chemocev marker wrote: I am wondering is there clear way to show these forces like H-bond. I tried KING and can see the VDW radii but not the visual representation. Does coot has any option for this? Coot uses the VdW radii in the Refmac monomer library. Maybe Measures -

Re: [ccp4bb] Van der waals force

2017-12-09 Thread chemocev marker
Hi Thanks for your good help and I am wondering is there clear way to show these forces like H-bond. I tried KING and can see the VDW radii but not the visual representation. Does coot has any option for this. best Jiri On Fri, Dec 8, 2017 at 8:57 AM, HERMAN VAN TILBEURGH < herman.van-tilbeu...@u-