>4n3eS (S:) observed residues (from ATOM records)
maaytivkeeespiaphrlfkalvlerhqvlvkaqphvfksgeiiegdggvgtvtkitfv
dghpltymlhkfdeidaanfyckytlfegdvlrdniekvvyevkleavgggskgkitvty
hpkpgctvneeevkigekkayefykqveeylaanpevfa