>1a4zB (B:) observed residues (from ATOM records)
vptpnqqpevlynqifinnewhdavskktfptvnpstgdvichvaegdkadvdravkaar
aafqlgspwrrmdasergrllnrladlierdrtylaaletldngkpyiisylvdldmvlk
clryyagwadkyhgktipidgdyfsytrhepvgvcgqiipwnfpllmqawklgpalatgn
vvvmkvaeqtpltalyvanlikeagfppgvvnvipgfgptagaaiashedvdkvaftgst
evghliqvaagksnlkrvtleiggkspniimsdadmdwaveqahfalffnqgqcccagsr
tfvqediyaefversvaraksrvvgnpfdsrteqgpqvdetqfkkvlgyiksgkeeglkl
lcgggaaadrgyfiqptvfgdlqdgmtiakeeifgpvmqilkfksmeevvgrannskygl
aaavftkdldkanylsqalqagtvwvncydvfgaqspfggyklsgsgrelgeyglqayte
vktvtvrvpqkns