sele selection, pepseq SNNFGAILSS;
extract protein, selection;
sele selection, byres resn SWM4 within 3.5 of protein;
extract H2O, selection;
disable all;
enable H2O;
select selection, visible and not elem O+H;
extract Drude, selection;
sele selection,H2O within 0.2 of Drude;
extract ExtraOxygen, selection
disable all
enable protein
enable H2O