Re: [gmx-users] protein unfolding in water

2013-09-19 Thread Justin Lemkul



On 9/19/13 10:12 AM, fatemeh ramezani wrote:

dear users

I'm studying gold nano-particle effect on one of the blood protein stability 
and structure. one time I simulated the protein in the presence of  the gold 
nanoparticle and once without nanoparticles.

when I simulated protein alone in water, I expected the protein to remain 
stable but protein RMSD, gyration,dssp and  graphs show protein structure 
is changing and protein helices are opening during the simulation.

  Thus, I can not study nanoparticle interaction effect on the protein 
structural changes , because the structural changes also observed  in the 
absence of nanoparticle.
I think there is a problem. What is the solution you offer me? What is the 
problem?



If the model does not reflect reality, that suggests a deficiency in the force 
field, run settings, or system setup.  Since you've told us nothing about how 
you're doing the simulations, there's little advice anyone can offer.


-Justin

--
==

Justin A. Lemkul, Ph.D.
Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 601
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441

==
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[gmx-users] protein unfolding in water

2013-09-19 Thread fatemeh ramezani
dear users

I'm studying gold nano-particle effect on one of the blood protein stability 
and structure. one time I simulated the protein in the presence of  the gold 
nanoparticle and once without nanoparticles.

when I simulated protein alone in water, I expected the protein to remain 
stable but protein RMSD, gyration,dssp and  graphs show protein structure 
is changing and protein helices are opening during the simulation.  

 Thus, I can not study nanoparticle interaction effect on the protein 
structural changes , because the structural changes also observed  in the 
absence of nanoparticle.
I think there is a problem. What is the solution you offer me? What is the 
problem? 

sincerely

Fatemeh Ramezani
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