>1z0aA (A:) observed residues (from ATOM records)
ayaylfkyiiigdtgvgksclllqftdkrfqdltigvefgarmitidgkqiklqiwdtag
qesfrsitrsyyrgaagallvyditrrdtfnhlttwledarqhsnsnmvimlignksdle
srrevkkeegeafarehglifmetsaktasnveeafintakeiyek