AMBER Archive (2009)

Subject: Re: [AMBER] DMF solvent box

From: FyD (fyd_at_q4md-forcefieldtools.org)
Date: Wed Oct 07 2009 - 15:34:35 CDT


Dear Abhishek,

>                      DMF box again. I was trying to minimize the box
> but after minimization I saw there was a gap in the middle of the
> box. I am sending the script and screenshot of the box. min.png
> after minimization and ori.png I created with xleap.  Plz help

Sorry for the delay, but I had to look back in my notes because we
encountered the same problem you have ;-) I even saved a picture (like
you did) with this empty 'cross' in the middle of the box... This is
not a big deal but you need to find the correct trick(s) to solve this.

1) what command did you use to solvate your DMF box ? could you try
using a large buffer i.e. "30" (instead of the "10" value reported in
the manual) - something like:

SolvateBox DMF DMF 30

2) what command did you use for the setbox command ?

Could you try to use "setBox DMF vdw" ?
(to be done after the SolvateBox command)

Does it solve your problem ?

regards, Francois

> --- On Sat, 19/9/09, FyD <fyd_at_q4md-forcefieldtools.org> wrote:
>
> From: FyD <fyd_at_q4md-forcefieldtools.org>
> Subject: Re: [AMBER] DMF solvent box
> To: "AMBER Mailing List" <amber_at_ambermd.org>
> Date: Saturday, 19 September, 2009, 6:36 AM
>
> Hi Abhishek,
>
>> Now I want to equilibrate the box (at 298K and 1 atm pressure) to 
>> get the correct density.  Then I will mix it with MEOH. How to do 
>> it. Thanks for your great help.
>
> I would first minimize the box, then equilibrate at constant volume
> and then at constant pressure. regards, Francois
>
>
>
>
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                 ---
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