supti mukherjee wrote:
Dear gromacs users,
I have some doubts regarding the options to be selected in g_sas
program. g_sas asks for two groups, first one for calculation and second
one for output. As I have understood from the manual that first group
should contain all non solvent groups and second one the whole or part
of these groups. Now my doubt is that in a system of protein+ligand,
when I am selecting both the protein and ligand in option 1 ( in the
calculation group) it automatically is sending the second selected group
to second option ( that is in the output group). Is the solvent
accessible area given in terms of the output group in the xvg file?
I want to calculate solvent accessibility of the ligand which is
surrounded by the protein. Selecting what option can mimic that
situation most closely?
Regards
Supti
NIMHANS, BANGALORE
You need to create new group which contains atoms from both protein and
ligand (make_ndx or by hand) and input number of this new group - the
most of the programs reads only one group per input (the rest write
something about selecting two groups...). Therefore the second number is
read for the second input (as the group for output).
About the rest of you question - I don't feel fully qualified to answer
it and I hope, somebody will.
Best.
Milan
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