Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-08-07 Thread Ramon Garduno
Thank you Justing... We are working on your observations... We are sure that we will get back on this issue as soon as we figure out what we have done wrong... Best, On Mon, 06 Aug 2012 15:29:04 -0400, Justin Lemkul wrote > On 8/6/12 3:13 PM, Ramon Garduno wrote: > > On Mon, 06 Aug 2012 13:52:4

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-08-06 Thread Justin Lemkul
On 8/6/12 3:13 PM, Ramon Garduno wrote: On Mon, 06 Aug 2012 13:52:46 -0400, Justin Lemkul wrote Please provide all the necessary files, including topologies and modified force field files. I don't have time to make and double- check all of these files and it's better to use exactly the same

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-08-06 Thread Ramon Garduno
On Mon, 06 Aug 2012 13:52:46 -0400, Justin Lemkul wrote > Please provide all the necessary files, including topologies and > modified force field files. I don't have time to make and double- > check all of these files and it's better to use exactly the same > files you've been trying to use. >

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-08-06 Thread Justin Lemkul
On 8/6/12 1:35 PM, Ramon Garduno wrote: Justin, Of course you are right, for troubleshooting the smaller, the better. However, in order to build a hydroxyapaptite (HAP) slab we need the proper unit cell, the later is by no means small. In response to your comments, I will appreciate very much

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-08-06 Thread Ramon Garduno
Justin, Of course you are right, for troubleshooting the smaller, the better. However, in order to build a hydroxyapaptite (HAP) slab we need the proper unit cell, the later is by no means small. In response to your comments, I will appreciate very much if you could examine the PDB files related

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-07-27 Thread Justin Lemkul
On 7/27/12 8:54 PM, Ramon Garduno wrote: Dear Justin, Thanks for your quick reply. Actually, we think that the topology is OK, however HAP's parameters could be wrong, we are checking on this... I would say that the topology being OK and the parameters being wrong are contradictory stateme

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-07-27 Thread Ramon Garduno
Dear Justin, Thanks for your quick reply. Actually, we think that the topology is OK, however HAP's parameters could be wrong, we are checking on this... These are the topology files used for HAP. The names associated to the atoms present on the slab are: ACa - Ca2+ AP - P AO1 - O(P) AO4 - O(

Re: [gmx-users] Hydroxyapatite MD odd behavior

2012-07-25 Thread Justin Lemkul
On 7/25/12 2:32 PM, Ramon Garduno wrote: Dear gmx friends: We are modeling a solvated hydroxyapatite(HAP)-protein complex. We have minimized and equilibrated this system to 300K under NVT. The odd behavior is observed when we start an NPT simulation. In the very first ps we observed that the

[gmx-users] Hydroxyapatite MD odd behavior

2012-07-25 Thread Ramon Garduno
Dear gmx friends: We are modeling a solvated hydroxyapatite(HAP)-protein complex. We have minimized and equilibrated this system to 300K under NVT. The odd behavior is observed when we start an NPT simulation. In the very first ps we observed that the oxygens bound (initially) to phosphorous in p