>3ik9B (B:) observed residues (from ATOM records)
aekpklhyfngrgrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmveid
gmklvqtrailnyiaskynlygkdikeralidmyiegiadlgemiimlpfcppeekdakl
alikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpll
kalktrisnlptvkkflqpgsprkpppdeiyvrtvynifrp