>1yl4E (E:) observed residues (from ATOM records)
vkelleagvhfgherkrwnpkfaryiyaerngihiidlqktmeelertfrfiedlamrgg
tilfvgtkkqaqdivrmeaeragmpyvnqrwlggmltnfktisqrvhrleelealfaspe
ieerpkkeqvrlkhelerlqkylsgfrllkrlpdaifvvdptkeaiavrearklfipvia
ladtdsdpdlvdyiipgnddairsiqlilsravdliiqarggvvepspsyalvq