Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-17 Thread tree
Dear Justin: Thank you for your email! Thanks to your help and explanation, I am feeling more comfortable with OPLS topology modification. Before this work, I have used Gromacs without modifying FF paramters for simulating 'water' in general systems, which can easily obtained from PDB

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-17 Thread XAvier Periole
On Mar 17, 2009, at 8:45 AM, tree wrote: Dear Justin: Thank you for your email! Thanks to your help and explanation, I am feeling more comfortable with OPLS topology modification. Before this work, I have used Gromacs without modifying FF paramters for simulating 'water' in general

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-17 Thread Tree
Dear Dr. Periole: Thank you for your answer. That was the point which I wanted to double check (of course after reading the manual...). Thank you again! Sincerely, Kim On Tue, Mar 17, 2009 at 6:09 PM, XAvier Periole x.peri...@rug.nl wrote: On Mar 17, 2009, at 8:45 AM, tree wrote: Dear

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-16 Thread tree
Dear Justin and All: I truly appreciate your clear answer. Since my questions are solved by your explanations, I do not know how I can express my grateful heart. Now I have to ask second step questions. :) It is related to the OPLS-aa bon.itp file. Each section (bonds, angle, diherdal, and

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-16 Thread XAvier Periole
On Mar 16, 2009, at 9:34 AM, tree wrote: Dear Justin and All: I truly appreciate your clear answer. Since my questions are solved by your explanations, I do not know how I can express my grateful heart. Now I have to ask second step questions. :) It is related to the OPLS-aa bon.itp

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-16 Thread Tree
Dear Dr. Periole: Thank you for your answer. You meant that the types of potential functions do not have any relations with OPLS-aa (except first (1) case). Those (from 2...) are defined as written the Gromacs manual. Thank you again. Sincerely, Kim On Mon, Mar 16, 2009 at 5:42 PM, XAvier

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-16 Thread Justin A. Lemkul
Tree wrote: Dear Dr. Periole: Thank you for your answer. You meant that the types of potential functions do not have any relations with OPLS-aa (except first (1) case). Those (from 2...) are defined as written the Gromacs manual. Table 5.4 defines the different types of intramolecular

[gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-13 Thread Tree
Dear All: I appreciate your answer always. Right now, I am trying to add/modify some values in OPLS-aa FF. I am confused atom type (opls_xxx) and atom name (e.g., C) in atp, bon.itp, and nb.itp files. Please let me try the situation by an example, first. In atp file, ... opls_058

Re: [gmx-users] Matching atom name and types in OPLS-aa FF

2009-03-13 Thread Justin A. Lemkul
Tree wrote: Dear All: I appreciate your answer always. Right now, I am trying to add/modify some values in OPLS-aa FF. I am confused atom type (opls_xxx) and atom name (e.g., C) in atp, bon.itp, and nb.itp files. Please let me try the situation by an example, first. In atp file, ...