10 October 2017 3 6K Report

I've performed MD simulation of transmembrane protein using Gromacs. Here, I want to calculate the angle of tilt of the transmembrane protein against the bilayer normal. What are the ways of measuring angle of tilt of transmembrane protein ?

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Gaps/Voids seen in POPC bilayer during MD simulation ?

Hi all, I am working on a MD simulation of a membrane protein inside the POPC bilayer using namd. At first, I ran a short constrained dynamics by applying harmonic constraints to both...

05 June 2019 7,291 4 View

Check if the lysine residues are deprotonated or not inside the membrane ?

Hi everyone, My system is a dimer. During the MD simulation, I can see a strong hydrogen bond formed between two lysine residues which are at the side chains of two peptides. But, the issue is...

04 May 2019 5,965 5 View

PDB manipulation options in Charmm GUI?

Hi everyone, While using the PDB reader of charmm-gui for my membrane protein system which is a dimer, I got stuck at PDB manipulation option. It gives me option regarding...

04 May 2019 2,169 3 View

Protein-lipid interaction ?

Can anyone please suggest me review articles/papers/books/links on understanding protein-lipid interactions through Molecular Dynamics simulation ? Thanks

01 February 2018 4,797 3 View

Definitive non-bonded distance to form a contact ?

Is there any standard value like two non-bonded residues or atoms are considered to form a contact if their distance is less than ? I usually use like 1.4 nm for short range non-bonded LJ cut-off...

01 February 2018 9,699 4 View

Plotting running average in python similar to in Xmgrace ?

Are there any scripts or tools available in python to plot the running average of the data similar to as shown in the figure attached? Thanks

31 December 2017 2,318 4 View

Rotate a specific residue and save the coordinates in VMD ?

I want to rotate a specific residue (say "resid 7 and resname MET") by 180 degrees around x-axis and save the coordinates. Can it be done using VMD's TK Console ?

31 December 2017 7,382 7 View

Thermal vibration of bonds ?

The characteristic frequency of thermal motion is around 7E12 Hz at room temperature (300K), but from that information how can we conclude that the bonds are hard; they don't vibrate !!

31 December 2017 5,947 2 View

Measurement of helical tilt (dimer tilt) using gmx helixorient ?

I want to measure the tilt of helix with the normal of bilayer. My system is basically a dimer with two helices. Since using sidechain atom relative to the axis is optional, I simply defined...

31 December 2017 457 3 View

Gromacs tool or any tools to look for the number of protein-lipid contacts ?

Are there any gromacs or other tools available to look for or find the number of protein-lipid contacts during Molecular Dynamics simulation of membrane protein ?

11 December 2017 2,664 3 View

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