>1w3cB (B:) observed residues (from ATOM records)
itaysqqtrgllgciitsltgrdknqvdgevqvlstatqsflatcvngvcwtvyhgagsk
tlagpkgpitqmytnvdqdlvgwpappgarsmtpctcgssdlylvtrhadvipvrrrgds
rgsllsprpvsylkgssggpllcpsghvvgifraavctrgvakavdfipvesme