>3praB (B:) observed residues (from ATOM records)
mvekgkmvkisydgyvdgklfdttneelakkegiynpamiygpvaifagegqvlpgldea
ilemdvgeerevvlppekafgkrdpskikliplseftkrgikpikgltitidgipgkivs
insgrvlvdfnhelagkevkyrikieevvd