Re: [gmx-users] The small organic molecule occurred deformation during simulation
On 8/5/17 2:59 PM, yujie liu wrote: Mr Justin: I have tried to do energy minimization in this situation which only existing small molecule in water, I found the structure of organic molecule didn’t become distortions. I think the distortions of organic molecules are due to these stronger interactions between small molecules and enzyme, because there is a enzyme molecule in the previous simulation. Do you think this consideration is correct? In the case, do you think this phenomenon is normal? What’s more, I checked out the top file of small molecules and don’t find error and include the information of improper dihedrals. Or your energy minimization simply indicates a strained initial structure that isn't fully relaxed. Real MD sampling is important here; energy minimization won't tell the whole story, at least not in any reliable way. -Justin -- == Justin A. Lemkul, Ph.D. Assistant Professor Virginia Tech Department of Biochemistry 303 Engel Hall 340 West Campus Dr. Blacksburg, VA 24061 jalem...@vt.edu | (540) 231-3129 http://www.biochem.vt.edu/people/faculty/JustinLemkul.html == -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] The small organic molecule occurred deformation during simulation
Mr Justin: I have tried to do energy minimization in this situation which only existing small molecule in water, I found the structure of organic molecule didn’t become distortions. I think the distortions of organic molecules are due to these stronger interactions between small molecules and enzyme, because there is a enzyme molecule in the previous simulation. Do you think this consideration is correct? In the case, do you think this phenomenon is normal? What’s more, I checked out the top file of small molecules and don’t find error and include the information of improper dihedrals. Thank you very much! Yours, Yujie liu -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] The small organic molecule occurred deformation during simulation
-- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] The small organic molecule occurred deformation during simulation
On 8/4/17 4:42 AM, yujie liu wrote: Hello, users I’m a novice to study the gromacs program. Now I met some problems which the small molecule occurred deformation when energy minimization was performed. For example, the anthracene molecule became bent in the plane of C-rings, the same as phenol. I want to know whether the situation is normal? In addition, I employed gromos54a7.ff Slight out-of-plane distortions are possible because the rings aren't fully rigid. But if you're seeing significant distortion, it suggests your topology is wrong, likely due to missing or incorrect improper dihedrals, which serve to prevent out-of-plane deformation. -Justin -- == Justin A. Lemkul, Ph.D. Ruth L. Kirschstein NRSA Postdoctoral Fellow Department of Pharmaceutical Sciences School of Pharmacy Health Sciences Facility II, Room 629 University of Maryland, Baltimore 20 Penn St. Baltimore, MD 21201 jalem...@outerbanks.umaryland.edu | (410) 706-7441 http://mackerell.umaryland.edu/~jalemkul == -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
[gmx-users] The small organic molecule occurred deformation during simulation
Hello, users I’m a novice to study the gromacs program. Now I met some problems which the small molecule occurred deformation when energy minimization was performed. For example, the anthracene molecule became bent in the plane of C-rings, the same as phenol. I want to know whether the situation is normal? In addition, I employed gromos54a7.ff Yours sincerely Yujie liu -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
