Re: [gmx-users] angle between helices

2007-10-29 Thread Marc F. Lensink
On Mon, Oct 29, 2007 at 05:31:18PM +1100, Mark Abraham wrote:
 Anupam Nath Jha wrote:
 Dear all
 can i calculate the angle between trans-membrane alpha-helices by using 
 gromacs?
 
 Probably. Check out section 7.4 of the manual.

i wrote a program for that.  contact me off-list.

as soon as i find a free moment, i'll upload it to the contrib page.

cheers,
marc

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Re: [gmx-users] angle between helices

2007-10-29 Thread David van der Spoel

Marc F. Lensink wrote:

On Mon, Oct 29, 2007 at 05:31:18PM +1100, Mark Abraham wrote:

Anupam Nath Jha wrote:

Dear all
can i calculate the angle between trans-membrane alpha-helices by using 
gromacs?

Probably. Check out section 7.4 of the manual.


i wrote a program for that.  contact me off-list.

as soon as i find a free moment, i'll upload it to the contrib page.


otherwise g_bundle might do it


cheers,
marc

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David van der Spoel, Ph.D.
Molec. Biophys. group, Dept. of Cell  Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205. Fax: +4618511755.
[EMAIL PROTECTED]   [EMAIL PROTECTED]   http://folding.bmc.uu.se
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Re: [gmx-users] angle between helices

2007-10-29 Thread Marc F. Lensink
On Mon, Oct 29, 2007 at 09:54:08AM +0100, David van der Spoel wrote:
 Marc F. Lensink wrote:
 On Mon, Oct 29, 2007 at 05:31:18PM +1100, Mark Abraham wrote:
 Anupam Nath Jha wrote:
 Dear all
 can i calculate the angle between trans-membrane alpha-helices by using 
 gromacs?
 Probably. Check out section 7.4 of the manual.
 
 i wrote a program for that.  contact me off-list.
 
 as soon as i find a free moment, i'll upload it to the contrib page.
 
 otherwise g_bundle might do it

yes, i should perhaps mention that my program calculates the helix
axes, using some rotational fit.  but for TM helices, that stay helix
anyway, this is not such a relevant feature.

cheers,
marc
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Re: [gmx-users] angle between helices

2007-10-29 Thread Anupam Nath Jha
HI David
there are options like g_helix, g_angle and as you said g_bundle, but none of
them gives the angle between helix pairs.

anupam


 Marc F. Lensink wrote:
 On Mon, Oct 29, 2007 at 05:31:18PM +1100, Mark Abraham wrote:
 Anupam Nath Jha wrote:
 Dear all
 can i calculate the angle between trans-membrane alpha-helices by using
 gromacs?
 Probably. Check out section 7.4 of the manual.

 i wrote a program for that.  contact me off-list.

 as soon as i find a free moment, i'll upload it to the contrib page.

 otherwise g_bundle might do it

 cheers,
 marc

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 --
 David van der Spoel, Ph.D.
 Molec. Biophys. group, Dept. of Cell  Molec. Biol., Uppsala University.
 Box 596, 75124 Uppsala, Sweden. Phone:+46184714205. Fax: +4618511755.
 [EMAIL PROTECTED] [EMAIL PROTECTED]   http://folding.bmc.uu.se
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--
Science is facts; just as houses are made of stone, so is science is made of
facts; but a pile of stones is not a house, and  a collection of facts is not
necessarily science.

Anupam Nath Jha
Ph. D. Student
Saraswathi Vishveshwara Lab
Molecular Biophysics Unit
IISc,Bangalore-560012
Karnataka
Ph. no.-22932611



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Re: [gmx-users] angle between helices

2007-10-29 Thread Alan Dodd
g_bundle does give the angle between helix pairs...?  Not directly, admittedly, 
but it gives you the tilt from the main axes, which you can use with some basic 
math to work out the angle between helices.

- Original Message 
From: Anupam Nath Jha [EMAIL PROTECTED]
To: Discussion list for GROMACS users gmx-users@gromacs.org
Sent: Monday, October 29, 2007 10:37:13 AM
Subject: Re: [gmx-users] angle between helices

HI David
there are options like g_helix, g_angle and as you said g_bundle, but none of
them gives the angle between helix pairs.

anupam


 Marc F. Lensink wrote:
 On Mon, Oct 29, 2007 at 05:31:18PM +1100, Mark Abraham wrote:
 Anupam Nath Jha wrote:
 Dear all
 can i calculate the angle between trans-membrane alpha-helices by using
 gromacs?
 Probably. Check out section 7.4 of the manual.

 i wrote a program for that.  contact me off-list.

 as soon as i find a free moment, i'll upload it to the contrib page.

 otherwise g_bundle might do it

 cheers,
 marc

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 --
 David van der Spoel, Ph.D.
 Molec. Biophys. group, Dept. of Cell  Molec. Biol., Uppsala University.
 Box 596, 75124 Uppsala, Sweden. Phone:+46184714205. Fax: +4618511755.
 [EMAIL PROTECTED][EMAIL PROTECTED]  http://folding.bmc.uu.se
 ___
 gmx-users mailing listgmx-users@gromacs.org
 http://www.gromacs.org/mailman/listinfo/gmx-users
 Please search the archive at http://www.gromacs.org/search before posting!
 Please don't post (un)subscribe requests to the list. Use the
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 --
 This message has been scanned for viruses and
 dangerous content by MailScanner, and is
 believed to be clean.




--
Science is facts; just as houses are made of stone, so is science is made of
facts; but a pile of stones is not a house, and  a collection of facts is not
necessarily science.

Anupam Nath Jha
Ph. D. Student
Saraswathi Vishveshwara Lab
Molecular Biophysics Unit
IISc,Bangalore-560012
Karnataka
Ph. no.-22932611



-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
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Re: [gmx-users] angle between helices

2007-10-28 Thread Mark Abraham

Anupam Nath Jha wrote:

Dear all
can i calculate the angle between trans-membrane alpha-helices by using gromacs?


Probably. Check out section 7.4 of the manual.

Mark
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