>1gn3B (B:) observed residues (from ATOM records)
aeytlpdldwdygalephisgqinelhhskhhatyvkgandavakleearakedhsaill
neknlafnlaghvnhtiwwknlspnggdkptgelaaaiadafgsfdkfraqfhaaattvq
gsgwaalgwdtlgnkllifqvydqqtnfplgivplllldmwehafylqyknvkvdfakaf
wnvvnwadvqsryaaats