>1gn3A (A:) observed residues (from ATOM records)
aeytlpdldwdygalephisgqinelhhskhhatyvkgandavakleearakedhsaill
neknlafnlaghvnhtiwwknlspnggdkptgelaaaiadafgsfdkfraqfhaaattvq
gsgwaalgwdtlgnkllifqvydqqtnfplgivplllldmwehafylqyknvkvdfakaf
wnvvnwadvqsryaaats