Chandan Choudhury wrote:
I had a simple query regarding the rtp file . What does the '+' and '-' sign indicates in the following dihedral inforamtion:

 [ dihedrals ]
    CA     C    +N    +H    backbone_prop_1
     O     C    +N    +H    backbone_prop_2
    -C     N    CA    CB    backbone_prop_3
    -C     N    CA     C    backbone_prop_4
    CA     C    +N   +CA    backbone_prop_1
     O     C    +N   +CA    backbone_prop_1

+ means next residue, - means previous.


Also, I cant understand the what is 'X' here in ffamberbon.itp:

X C C X 3 30.33400 0.00000 -30.33400 0.00000 0.00000 0.00000 ; new99 X C O X 3 23.43040 0.00000 -23.43040 0.00000 0.00000 0.00000 ; new99 X C OS X 3 22.59360 0.00000 -22.59360 0.00000 0.00000 0.00000 ; new99


X means any atom type, if I recall.

-Justin


Chandan

--
Chandan kumar Choudhury
NCL, Pune
INDIA


--
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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