[gmx-users] (no subject)

[K.A. Feenstra]

Yuguang Mu wrote:
> 
> >      N    -C    CA     H
> >     -C   -CA     N    -O
> > What do you mean?
> 
> This is usually used in amino acid units, which are supposed to be  connected
> to build the peptides and proteins. the + means  the atom belongs to the next
> units , the unit which follows, the - means atom belongs to the previous unit.

That is correct. It is actually implemented as 'the first atom
of that name up/down-stream'.

If, for example, you want to build complicated hetero-polymer 
systems, you could in principle even connect to a residue
further back - although I don't think that has been tried - or
further forward - which is even less likely to work... ;-}

-- 
Groetjes,

Anton
 ________ ___________________________________________________________
|        | Anton Feenstra                                            |
| .      | Dept. of Pharmacochemistry - Vrije Universiteit Amsterdam |
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