>4xuiA (A:) observed residues (from ATOM records)
apaavdwrargavtavkdqgqcgscwafsaignvecqwflaghpltnlseqmlvscdktd
sgcsgglmnnafewivqenngavytedsypyasgegisppcttsghtvgatitghvelpq
deaqiaawlavngpvavavdasswmtytggvmtscvseqldhgvllvgyndsaavpywii
knswttqwgeegyiriakgsnqclvkeeassavvg