Re: [ccp4bb] request for basic crystallography online classes

2020-07-21 Thread Natesh Ramanathan
Dear Venkata, Check with Birkbeck online crystallography certificate course here: http://www.bbk.ac.uk/study/2020/postgraduate/programmes/TPCCRPRO_C/. Best wishes, Natesh On Wed, 22 Jul 2020 at 09:22, venkata narayana Are < venkat.sai.biochemis...@gmail.com> wrote: > Dear Sir, > > My self Venka

[ccp4bb] request for basic crystallography online classes

2020-07-21 Thread venkata narayana Are
Dear Sir, My self Venkat completed Ph.D. in Biochemistry (structural biology) later on joined in a short project where I learned cell biology and virology. I have solved 15 structures during my Ph.D., further I wanting to learn membrane protein receptors structural biology and other complex protei

[ccp4bb] Citation of REFMAC!

2020-07-21 Thread Lijun Liu
Hi REFMACers: To get the citation information of REFMAC, I made a test run, which gave me: ==CCP4 7.0.076: Refmac  version 5.8.0253 : 06/20/19 ...    "Overview of refinement procedures within REFMAC5: utilizing data from different sources"    O.Kovalevskiy, R.A.Nicholls,

Re: [ccp4bb] Sad News

2020-07-21 Thread Paul Adams
Dear Bob, Many thanks for posting this memory of Ward. It was such a sad shock to learn of his passing. Like many of the newsgroup readers I remember Ward as an outstanding colleague and program manager. It was my pleasure to talk with him regularly as my point of contact for Phenix and ALS-E

Re: [ccp4bb] Model refinement problems when upgrading Phenix

2020-07-21 Thread Phil Jeffrey
Hello Juan First, there's a phenix.refine bulletin board, on which you might attract the attention of the developers, which might help. http://www.phenix-online.org/mailman/listinfo/phenixbb I've been using 1.17-3644 without issues after transitioning from something older. Consider downgradi

[ccp4bb] Model refinement problems when upgrading Phenix

2020-07-21 Thread JUAN ESTEVEZ GALLEGO
Dear all, I have been working on the refinement of a crystal structure using phenix.refine from the 1.12-2828-Intel-Linux-2.6 version of Phenix. I have recently replaced my computer by a MacBook and I have upgraded Phenix to the 1.18.2-3874-MacOs version. However, I found that the refineme

[ccp4bb] Job: Senior Bioinformatician – Cambridge UK

2020-07-21 Thread Daphne Truan
Hi All, We are hiring! We are seeking a highly motivated and skilled (Senior) Scientist with experience in programming pipelines, biostatistical analysis and data modelling to join Lonza's Applied Protein Services (APS) Bioinformatics team based in Cambridge, UK. To apply: https://pharma.lonza

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread David Briggs
Hi Samer, (1) Given that you say there is a relatively high concentration of Zn2+ ions in the crystallisation buffer, I suspect this might be your candidate. (2) If the Zn2+ ion is correctly represented in the pdb file, your refinement program of choice will know what the target co-ordination d

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
Hello,Thank you for your kind reply.In this case that could be either Zinc or Nickel. Sorry, I should've mentioned how I purified the protein complex. The protein is secreted in HighFive cells, to purify it  by its 6xHis tag, I used Ni sepharose excel beads, eluted with Imidazole and then furthe

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
Hello,Thank you for your kind reply.If the distances are still less than 2.2Å, would coot and Refmac still consider that as a clash. When I try to fit in Imidazole, even if the distance is more than 2.8Å, it is still considering it a clash.Sorry, I should've mentioned how I purified the protein

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
Hello,Thank you for your kind reply.We used glycerol to fish out the crystals.Sorry for not including more info before, I thinkI should have mentioned how I purified the protein complex. The protein is secreted in HighFive cells, to purify it  by its 6xHis tag, I used Ni sepharose excel beads,

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
Hello,Thank you for your kind reply.Do I need to link them together in the structure? Is there a method for that? >From the other replies I thought I should mention how I purified the protein >complex.The protein is secreted in HighFive cells, to purify it  by its 6xHis >tag, I used Ni sepharos