[gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread Kavyashree M
Dear users, Kindly clarify my doubt regarding salt bridge calculation. Thank you Regards Kavya On Mon, Apr 1, 2013 at 3:48 PM, Kavyashree M hmkv...@gmail.com wrote: Dear users, For calculating salt bridge in proteins I am using g_hbond instead of g_saltbr. In g_hbond I use contact and

Re: [gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread bipin singh
You can use g_dist with specific atoms indices to calculate distances, if you already have the information about atoms involved in salt bridge interactions. On Tue, Apr 2, 2013 at 5:10 PM, Kavyashree M hmkv...@gmail.com wrote: Dear users, Kindly clarify my doubt regarding salt bridge

Re: [gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread Kavyashree M
Sir, Thank you very much for your reply. I wanted to calculate Salt bridge in the whole protein so i am not mentioning the residues involved. The problem with g_saltbr was that if I have to calculate the accessibility of these atoms it will be a problem because it gives the charge groups but not

Re: [gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread Justin Lemkul
On 4/2/13 11:58 AM, Kavyashree M wrote: Sir, Thank you very much for your reply. I wanted to calculate Salt bridge in the whole protein so i am not mentioning the residues involved. The problem with g_saltbr was that if I have to calculate the accessibility of these atoms it will be a problem

Re: [gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread Kavyashree M
Sir, This g_hbond will generate a matrix similar to what g_saltbr would have given in terms of variation of distance between two charge groups. I want to find out the variation of all the salt bridges in the protein over the trajectory, if I have to use g_dist with an index of positive atoms and

Re: [gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread Justin Lemkul
On Tue, Apr 2, 2013 at 1:09 PM, Kavyashree M hmkv...@gmail.com wrote: Sir, This g_hbond will generate a matrix similar to what g_saltbr would have given in terms of variation of distance between two charge groups. I suppose, in that sense, the output can be useful. I want to find out

Re: [gmx-users] Re: Salt bridge Calculations

2013-04-02 Thread Kavyashree M
Sir, Thank you for the detailed insight. As you mentioned It does not give much information. But the matrix that it would generate would only show whether a specific salt bridge (SB) exited at a given time within the cut-off (0.4). I got your explanation. Yes water mediated SBs are also