Re: [ccp4bb] Positive Docking Scores

2024-03-28 Thread Sorin Draga
Hi Thripthi, I would suggest that you check a few things: - when defining the gridbox coordinates, did you set the spacing to 1? - did you properly prepare your receptor (remove bound ligands, ions, waters, adding missing residues to your structure etc) and add polar hydrogens? -

Re: [ccp4bb] alternatives to Consurf server

2024-01-04 Thread Sorin Draga
You can also map conservation with VMD, if memory serves (have not done this in quite a while). On Thu, Jan 4, 2024 at 9:34 AM Roberto Steiner < 2497b6493202-dmarc-requ...@jiscmail.ac.uk> wrote: > ConservFold from the Rodrigues lab at Warwick is something that you might > consider. >

Re: [ccp4bb] Autodock vina docking results

2023-11-19 Thread Sorin Draga
It is most likely the spacing setting in PMV (it is set to the default value used by the original Autodock, namely 0.375A). In Autodock Vina it should be set to 1 angstrom. Let me know if this helps Kind regards, Sorin On Sun, Nov 19, 2023 at 1:57 PM BRUNO DI GERONIMO QUINTERO <

Re: [ccp4bb] structural simulation in organic slovent

2021-11-15 Thread Sorin Draga
Hi Lucky, GROMACS can do mixed solvent MD simulations quite easily On Mon, Nov 15, 2021 at 11:30 AM 卢宏运 wrote: > Dear All, > > I was wondering if there is a skilled software to simulate the structural > changes of proteins at different organic solvent? > > > regards, > Lucky > > > > > >

Re: [ccp4bb] 2019 mid-range & high-end LINUX laptops for structural biology

2021-09-02 Thread Sorin Draga
Hello Domen, If you are based in Europe, I recommend checking out Tuxedo laptops, which you can customize based on budget and preference - I've recently got a Ryzen 3950x with a RTX2070 to run heavy computational work and it does the job quite well. The downside is that their customer support is

Re: [ccp4bb] biomolecular NMR for IDPs

2021-08-17 Thread Sorin Draga
nce you want data on the free and bound forms of the > complex) at 0.5 - 1 mM depending upon the size of the molecule which > relates to the complexity of the NMR spectrum due to number of resonances > and the relaxation times. The total volume required for each sample is > betwe

Re: [ccp4bb] biomolecular NMR for IDPs

2021-08-16 Thread Sorin Draga
depends upon the size of the molecule. > You will need at least 2-3 samples that are differentially labeled with > 15N, 13C (also since you want data on the free and bound forms of the > complex) at 0.5 - 1 mM depending upon the size of the molecule which > relates to the complexity of the N

Re: [ccp4bb] biomolecular NMR for IDPs

2021-08-15 Thread Sorin Draga
ers, Jon.C. > > > Sent from ProtonMail mobile > > > > ---- Original Message > On 15 Aug 2021, 09:16, Sorin Draga < sor.dr...@gmail.com> wrote: > > > Hello Ethan, > > Thank you for the suggestions. I should have mentioned in my initial post > that my intention i

Re: [ccp4bb] biomolecular NMR for IDPs

2021-08-15 Thread Sorin Draga
ProtonMail mobile > > > > Original Message > On 15 Aug 2021, 09:16, Sorin Draga < sor.dr...@gmail.com> wrote: > > > Hello Ethan, > > Thank you for the suggestions. I should have mentioned in my initial post > that my intention is to first conduct a hi

Re: [ccp4bb] biomolecular NMR for IDPs

2021-08-15 Thread Sorin Draga
should be well within its scope. > > best > > Ethan > > On Saturday, 14 August 2021 14:12:40 PDT Sorin Draga wrote: > > Hello everyone, > > > > I do realize that this is not a NMR focused group, but I do hope that > there > > are

[ccp4bb] biomolecular NMR for IDPs

2021-08-14 Thread Sorin Draga
Hello everyone, I do realize that this is not a NMR focused group, but I do hope that there are a few spectroscopists lurking around that could possibly answer a few questions (I am more of a modeler/computationalist): The problem: I have two intrinsically disordered proteins that are known to

[ccp4bb] clustering large number of ligands by position relative to the receptor

2021-05-27 Thread Sorin Draga
Hello everyone, While this is not exactly a crystallography question, I do think that most of you are well versed in structural analysis. The problem: I have a very large number of ligands (>100.000) resulting from blind docking against a certain receptor. Due to the large number, this can not be

Re: [ccp4bb] protein oligomer

2020-07-19 Thread Sorin Draga
I am not sure what you mean by polymer formation. Presuming that you have optimized your protein concentration, pH and salt concentration, you could try arginine as an anti-aggregation agent in your purification (I presume you do FPLC). Have a look at chaotropic agents used in protein

Re: [ccp4bb] Energy minimization and explicit solvent model

2020-06-24 Thread Sorin Draga
Dear Andre, I am not sure what you mean by conformational space around the model, but to answer your question: short energy minimization can be done using, for example, deep view/swiss pdb viewer. However, I think that you are most likely looking for a short bout of molecular dynamics, in which

[ccp4bb] Fwd: [ccp4bb] AKTA FPLC fractionation peak by peak

2019-06-03 Thread Sorin Draga
ionate into another > well. Use the time as base and keep the Äkta pumping at constant speed. > Curious if someone knows a better strategy! > Best, matthias > > ------ > *From:* CCP4 bulletin board on behalf of Sorin > Draga > *Sent:* Monday, June 3, 20

[ccp4bb] AKTA FPLC fractionation peak by peak

2019-06-03 Thread Sorin Draga
Dear all, We have an old akta system, running Unicorn 4.0, recently donated to our lab. While attempting to fractionate a protein mixture, I was unable to convince Unicorn to fractionate within given limits (say, for ex peak A between RT a and b and peak B between retention times c and d). All

Re: [ccp4bb] Name that protein!

2018-06-27 Thread Sorin Draga
the closest thing I can think of is tetramer of hAQP4 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2678640/ On Wed, Jun 27, 2018 at 2:07 PM, david lawson (JIC) wrote: > Hi All > > > > Apologies for the off-topic question. > > > > The attached image has been hanging on the wall at our