<br>HI <br>THe command =&gt;<br>g_sas_mpi -f 6LYZ-MD566500.xtc -s 6LYZ-MD566500.tpr -o solvent-accessible-surface.xvg -oa atomic-sas.xvg -or residue-sas.xvg<br><br><br><br>In the solvent-accessible-surface.xvg =&gt;<br>@ s0 legend &quot;Hydrophobic&quot;<br>
@ s1 legend &quot;Hydrophilic&quot;<br>@ s2 legend &quot;Total&quot;<br>@ s3 legend &quot;D Gsolv&quot;<br><br>What does &quot;Hydrophobic&quot; mean here?<br>What does &quot;Hydrophilic&quot; mean here?<br>
Does &quot;Total = Hydrophobic+Hydrophilic&quot; ?<br>What does &quot;D Gsolv&quot; mean here?<br>
How can Gromacs define &quot;Hydrophobic atoms&quot; and &quot;Hydrophilic atoms&quot; ?<br><br><br><br>What does the Area unit mean ? =&gt;  &quot;Area (nm\S2\N)&quot;<br><br><br>Thank you<br>Lin<br><br>