>1zn7B (B:) observed residues (from ATOM records)
dselqlveqrirsfpdfptpgvvfrdispvlkdpasfraaigllarhlkathggridyia
gldsrgflfgpslaqelglgcvlirkrgklpgptlwasysleygkaeleiqkdalepgqr
vvvvddllatggtmnaacellgrlqaevlecvslveltslkgreklapvpffsllqye