Re: [gmx-users] SAS for membrane protein

2016-05-24 Thread Justin Lemkul



On 5/24/16 8:43 AM, Maximilien LOPES RODRIGUES wrote:

Hi dear gromacs users,

It's the first time I use this mail list, I hope it will work fine.

I have simulated a membrane protein in a lipid bilayer with water etc. 
Everything is fine but I now want to calculate the accessible surface of the 
protein. Can you help me to understand how does it work ?

I obviously have a .gro (or .pdb) containing the system and an index file to 
select only the protein, lipids,...
"gmx sasa" is the command to use. But I don't know how to only calculate the 
SAS of the part of the protein that is effectively in contact with water ? I mean, we 
have to exclude the hydrophobic surface that is in contact with lipids.



The calculation group is protein + membrane, then choose just the protein for 
output.


-Justin

--
==

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

==
--
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.


[gmx-users] SAS for membrane protein

2016-05-24 Thread Maximilien LOPES RODRIGUES
Hi dear gromacs users,

It's the first time I use this mail list, I hope it will work fine.

I have simulated a membrane protein in a lipid bilayer with water etc. 
Everything is fine but I now want to calculate the accessible surface of the 
protein. Can you help me to understand how does it work ?

I obviously have a .gro (or .pdb) containing the system and an index file to 
select only the protein, lipids,...
"gmx sasa" is the command to use. But I don't know how to only calculate the 
SAS of the part of the protein that is effectively in contact with water ? I 
mean, we have to exclude the hydrophobic surface that is in contact with lipids.

Is my question understandable ?

Thank you in advance. Hope I can help in return.
Kind regards,
Max
-- 
Maximilien LOPES RODRIGUES
PhD student 

Département de Chimie
Chimie-Physique des Biomolécules (CPB)

Tel. +32 (0)81 72 45 23
Fax. +32 (0)81 72 45 46

maximilien.lopesrodrig...@unamur.be
https://directory.unamur.be/staff/mlopesro

Université de Namur
Rue de Bruxelles 61 - 5000 Namur
Belgique 

-- 
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.