>1pkzB (B:) observed residues (from ATOM records)
aekpklhyfnargrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmveid
gmklvqtrailnyiaskynlygkdikeralidmyiegiadlgemilllpvcppeekdakl
alikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpll
kalktrisnlptvkkflqpgsprkppmdeksleearki