[gmx-users] g_helixorient

[Poojari, Chetan]

Hi,

I have a peptide inserted in membrane would like to analyze the peptide tilt.

The command i have used to do this is :

g_helixorient  -s .tpr  -f .xtc  -n .ndx  -otilt

Index file contains all carbon alpha atoms of the helix.

When i plot the tilt.xvg in xmgrace,  i simply cannot obtain anything more than zero line graphic.

My tilt.xvg file contains:

             20                     0    6.71663331985    7.67159080505    7.11331129074    6.48267745972    6.50307703018    3.75021958351    3.11895847321    4.27641773224    4.94620418549    6.23851776123    7.12995672226    13.8778572083    53.7828483582     151.92010498    19.5190696716    15.4049606323     19.654499054                0
             40                     0    13.8856639862    8.50883388519    3.26247763634    5.69738864899    13.2208509445    17.3268871307    15.3818006516    14.5039892197    15.0511980057    15.6195802689     13.389333725    9.22294712067    50.3538093567    170.862670898     45.268119812    47.6134376526    48.8991851807                0
 .
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.
.
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Please can i know what might have gone wrong.


Kind Regards,
Chetan.

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