>1sz0A (A:) observed residues (from ATOM records)
aefpelcsytweavdtknnmlykinicgnmgvaqcgpssavcmhdlktdsfhsvgdsllk
tasrsllefnttvnckiqssitflcgktlgtpefvtatdcvhyfewrttaackknifkan
kevpcyafdrelkkhdlnpliktsgaylvddsdpdtslfinvcrdievlrasspqvrvcp
tgaaaclvrgdrafdvgrpqeglklvsndrlvlsyvkegagqpdfcdghspavtitfvcp
serregtipkltaksncrfeiewvteyachrdylesrscslssaqhdvavdlqplssdsl
fytseadeytyylsicggsqapicnkkdaavcqvkkadstqvkvagrpqnltlrysdgdl
tliyfggeecssgfqrmsvinfecnqtagnngrgapvftgevdctyfftwdtkyacv