>3i69F (F:) observed residues (from ATOM records)
kpklhyfngrgrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmveidgm
klvqtrailnyiaskynlygkdikeralidmyiegiadlgemiimlpfcppeekdaklal
ikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpllka
lktrisnlptvkkflqpgsprkpppdeiyvrtvyni