[gmx-users] Parameters for membrane stability

Justin A. Lemkul jalemkul at vt.edu
Mon Aug 24 23:54:35 CEST 2009

Ragnarok sdf wrote:
> I've just generated a 512 DPPC bilayer using genconf with a 128 DPPC 
> from tieleman's website as a starting structure. I've run a short 1 ns 
> semi-isotropic simulation at 323 K and monitored the area per lipid as a 
> stability parameter for my membrane simulation. If the area per lipid 
> maintains the same, can I consider my membrane as being stable? Would 
> there be better parameters for it?

Many membrane parameters are inter-related, but if you are trying to make a 
strong argument for stability (and ultimately equilibrium behavior), I would 
think a much more thorough analysis would include: deuterium order parameters, 
membrane thickness, and lateral diffusion of lipids, if not a few more.


> Thank you in advance
> Fabrício Bracht
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Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080


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