>3j39B (B:) observed residues (from ATOM records)
mshrkfsaprhgsmafypkkrsarhrgkvkafpkddaskpvhltcfigykagmthivrea
drpgskinkkevveavtvletppmivvgavgyietpfglralvnvwaqhlseecrrrfyk
nwykskkkaftkaskkwtddlgkksiendfrkmlryckvirviahsqirlikqrqkkahv
meiqlnggsiedkvkwarehlekpiqvsnvfgqdemidcvgvtkgkgfkgvtsrwhtkkl
prkthkglrkvacigawhpsrvsttvaragqkgyhhrteinkkiyrigagihtkdgkvik
nnasteydltdksitpmggfphygevnndfvmikgccigskkriitlrksllkhtkrsal
eqiklkfidtsskmghgrfqtpadklafmgplkkdrlkeeaaattaaaaaattt