>1z4eB (B:) observed residues (from ATOM records)
hvtireategdleqmvhmladdvlgrkreryekplpvsyvrafkeikkdknnelivacng
eeivgmlqvtftpyltyqgswratiegvrthsaargqgigsqlvcwaierakergchliq
lttdkqrpdalrfyeqlgfkasheglkmhf