AMBER Archive (2007)

Subject: Re: AMBER: Free energy for part of the system

From: David A. Case (case_at_scripps.edu)
Date: Tue Dec 04 2007 - 12:37:16 CST


On Tue, Dec 04, 2007, jialei wrote:
>
> We would like to compare free energies between two
> duplexes (one target duplex and one control). The reason why we thought out
> computing the central 5mer free energy is that there are end effects during
> the simulation, while the central 5mer looks normal.

Do the target and the control have the same sequence? If not, I don't see how
you can make a meaningful free energy comparison. And if they do have the
same sequence (so that the differences are in the non-central base pairs), I
don't see how you would interpret the result (although you could certainly
calculate it in the manner you suggest).

...regards...dac

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