I had a simple query regarding the rtp file . What does the '+' and '-' sign indicates in the following dihedral inforamtion:<div><br clear="all"><div> [ dihedrals ]</div><div> CA C +N +H backbone_prop_1</div>
<div> O C +N +H backbone_prop_2</div><div> -C N CA CB backbone_prop_3</div><div> -C N CA C backbone_prop_4</div><div> CA C +N +CA backbone_prop_1</div><div>
O C +N +CA backbone_prop_1</div><div><br></div><div>Also, I cant understand the what is 'X' here in ffamberbon.itp:</div><div><br></div><div><div>X C C X 3 30.33400 0.00000 -30.33400 0.00000 0.00000 0.00000 ; new99</div>
<div>X C O X 3 23.43040 0.00000 -23.43040 0.00000 0.00000 0.00000 ; new99</div><div>X C OS X 3 22.59360 0.00000 -22.59360 0.00000 0.00000 0.00000 ; new99</div>
<div><br></div><div><br></div><div>Chandan</div></div><div><br></div>--<br>Chandan kumar Choudhury<br>NCL, Pune<br>INDIA<br>
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