>1zs3E (E:) observed residues (from ATOM records)
tklmidekyakeldkaeidhhkptagamlghvlsnlfienirltqagiyakspvkceylr
eiaqreveyffkisdllldeneivpstteeflkyhkfitedpkakywtdedllesfivdf
qaqnmfitraiklankeekfalaagvvelygynlqvirnlagdlgksvadf