>3v4zB (B:) observed residues (from ATOM records)
maekvavllggtsaerevsllsgqavlaglkeagidaygvdtkdfpvtqlkeqgfdkvfi
alhgrggedgtlqgvleflqlpytgsgvmasaltmdklrtklvwqalglpispyvalnrq
qfetlspeelvacvaklglplivkpshgmskvdhaselqkalveafqhdsdvliekwlsg
peftvailgdevlpsiriqpptqyfcpsglsdeseqqlaalalqayhaldcsgwgrvdvm
qdrdghfyllevntspgmtshslvpmaarqyglsfsqlvarilmlad