>3s3rB (B:) observed residues (from ATOM records)
veipssfdsrkkwprcksiatirdqsrcgscwafgaveamsdrsciqsvelsavdllscc
escglgceggilgpawdywvkegivtgsskenhagcepypfpkcehhtkgkyppcgskiy
ktprckqtcqkkyktpytqdkhrgkssynvkndekaiqkeimkygpveagftvyedflny
ksgiykhitgetlgghairiigwgvenkapywlianswnedwgengyfrivrgrdecsie
sevtagrin