Re: [gmx-users] Umbrella Sampling result

2015-03-02 Thread Warren Gallin
e^(∆G/(RT)) >>> >>> Kd= e^(-76600/(83144*298.15)) = 3.8032908e-14 M >>> >>> The real value is 0.76 uM... >>> >>> Where have I gone wrong? >>> >>> Many Thanks >>> Alex >>> &g

Re: [gmx-users] Umbrella Sampling result

2015-03-02 Thread Felipe Merino
_gmx-users-boun...@maillist.sys.kth.se] on behalf of Warren Gallin [wgal...@ualberta.ca] Sent: Monday, March 02, 2015 11:38 AM To: gmx-us...@gromacs.org Subject: Re: [gmx-users] Umbrella Sampling result The equation you refer to is: ∆G=RTln(Kd) [The extra factor in the Wikipedia entry is unnecessary, sinc

Re: [gmx-users] Umbrella Sampling result

2015-03-01 Thread Warren Gallin
e > [gromacs.org_gmx-users-boun...@maillist.sys.kth.se] on behalf of Warren > Gallin [wgal...@ualberta.ca] > Sent: Monday, March 02, 2015 11:38 AM > To: gmx-us...@gromacs.org > Subject: Re: [gmx-users] Umbrella Sampling result > > The equation you refer to is: > > ∆G=RT

Re: [gmx-users] Umbrella Sampling result

2015-03-01 Thread Alexander Law
From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se [gromacs.org_gmx-users-boun...@maillist.sys.kth.se] on behalf of Warren Gallin [wgal...@ualberta.ca] Sent: Monday, March 02, 2015 11:38 AM To: gmx-us...@gromacs.org Subject: Re: [gmx-users] Umbrella Sampling result The

Re: [gmx-users] Umbrella Sampling result

2015-03-01 Thread Warren Gallin
The equation you refer to is: ∆G=RTln(Kd) [The extra factor in the Wikipedia entry is unnecessary, since there is no actual unit for the “concentration terms” ; the relevant number is activity, which is dimensionless and which approaches the numerical value of the concentration when the conce

[gmx-users] Umbrella Sampling result

2015-03-01 Thread Alexander Law
Dear gmx-users Is it possible to produce a valid dissociation constant value from gibbs free energy value produced from umbrella sampling? The equation is given at the bottom of the this wikipedia page: http://en.wikipedia.org/wiki/Binding_constant Is the concentration term vital since the lig