>3r5xB (B:) observed residues (from ATOM records)
amrigvimggvssekqvsimtgnemianldknkyeivpitlnekmdliekakdidfalla
lhgkygedgtvqgtleslgipysgsnmlssgicmdkniskkilryegietpdwieltkme
dlnfdeldklgfplvvkpnsggvkivydkdelismletvfewdsevviekyikgeeitcs
ifdgkqlpiisirhaaeffstieevielpaelkervnkaslacykalkcsvyarvdmmvk
dgipyvmevntlpgmtqasllpksadaagihysklldmiietslrvrkeeg