Re: [gmx-users] ffnonbonded value of charmm to charmm27 ff

2013-04-18 Thread Mark Abraham
Identify the equations into which they are inserted. Apply scaling
parameters to change the units. Learn to check others' work before
investing months of effort ;-)

Mark


On Thu, Apr 18, 2013 at 5:39 PM, 라지브간디  wrote:

> Dear gmx,
>
>
> I m having a confusion of using the literature value of non-bonded (
> charmm format) to use in gromacs over charmm27.ff ?
>
>
> For example, the literature reported the Carbon nonbonded as ( sigma
> =3.83, epsilon -0.0262 ), whereas the charmm27.ff in gromacs- ffnonbonded
> value listed for Carbon listed as (sigma 0.356359487256, epsilon  0.46024).
>
>
> so whats is the procedure to convert this literature value favor to
> charmm27 in gromacs?
>
>
> Thanks in advance.
>
>
>
>
> Regards
>
>
> Rajiv
>
>
>
>
>
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[gmx-users] ffnonbonded value of charmm to charmm27 ff

2013-04-18 Thread 라지브간디
Dear gmx,


I m having a confusion of using the literature value of non-bonded ( charmm 
format) to use in gromacs over charmm27.ff ? 


For example, the literature reported the Carbon nonbonded as ( sigma =3.83, 
epsilon -0.0262 ), whereas the charmm27.ff in gromacs- ffnonbonded value listed 
for Carbon listed as (sigma 0.356359487256, epsilon  0.46024). 


so whats is the procedure to convert this literature value favor to charmm27 in 
gromacs? 


Thanks in advance.




Regards


Rajiv




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