Can someone recommend a MD force field for phosphorylated cysteine (3-oxoalanine)?

I would like to do classical MDS of a protein containing phosphorylated cysteine (3-oxoalanine) using GROMACS. Which force field should I use?

07 August 2019 7,344 4 View

Why Gromacs mmpbsa shows 'nan' in energy values?

I have performed simulation using gromacs. The protein is of two chains, I am trying to understand the changes in mmpbsa values between the two chains but I get following. What could be possible...

02 March 2019 1,935 3 View

Is it possible to create gromacs ndx file of two chains as a single index file?

I have performed a protein-protein simulation. I wish to see the change in binding between protein chain A & chain B. How to create a index files of chain A & B and do the analysis? Like GROUP 1 :...

02 March 2019 6,250 4 View

Can GROMACS perform molecular dynamics with different pH? If NO, what could be an easiest alternative?

I wish to study the change in interaction of the small molecule with the protein in respective to change in pH. GROMACS focuses most on protonation state and not directly on pH. So how can I...

01 February 2019 3,095 5 View

How to get the nano-particles of different shapes in 3D PDB?

We have identified nano particles of different shapes (eg Ag NPs in rod shape, round, etc.). we wish to have computational study. Is it possible to draw the structures of nano particles or get...

03 April 2018 3,981 0 View

Is it possible to draw the nano particles using software? If yes, what are they?

We have identified nano particles of different shapes (eg Ag NPs in rod shape, round, etc.). we wish to have computational study. Is it possible to draw the structures of nano particles or get...

02 March 2018 7,111 1 View

Why many of the drugs in market do not satisfy lipinski rule?

05 June 2017 2,142 5 View

What are the set of parameters and its normal value used in "Quantitative Estimate of Drug-likeness (QED)" predictions?

05 June 2017 7,745 0 View

When considering molecular dynamics simulation, which is more appropriate? A long run dynamics or multiple run dynamics?

03 April 2017 2,597 3 View

How to find the average distance moved by metal from the protein using Gromacs?

02 March 2017 541 2 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Is there an open source free software for text mining and sentiment analysis?

I am looking for a free software for text mining and sentiment analysis for my research on customer review mining (it involves calculating polarity of attributes,opinion oriented information...

25 February 2021 1,920 6 View

Which are the journals for free paper publication?

A bunch of flower for everybody. I would like to ask about the list of journals which we can publish our paper for free. Thanks in advance. Sincerely Walid

25 February 2021 9,790 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Hello, does any one know a free medical text dataset?

a free multi label clinical text dataset , containing text as entry and several labels as classes. Best regards

22 February 2021 5,988 2 View

Protocol for membrane extraction E. coli?

Hello! I am interested in determining whether a poly-unsaturated fatty acid I have engineered E. coli to produce is being incorporated into the membrane of the cells or if it is simply a free...

21 February 2021 7,447 2 View

Can anyone recommend which is the best free questionnaire software please?

Hello, I am looking to send out links to an online survey. My previous research project used a paid for survey software. I am now looking for something that's free but straight forward to...

19 February 2021 5,641 3 View