>2a1uB (B:) observed residues (from ATOM records)
lrvlvavkrvidyavkirvkpdrtgvvtdgvkhsmnpfceiaveeavrlkekklvkevia
vscgpaqcqetirtalamgadrgihvevppaeaerlgplqvarvlaklaekekvdlvllg
kqaidddcnqtgqmtagfldwpqgtfasqvtlegdklkveraidggletlrlklpavvta
dlrlnepryatlpnimkakkkkievikpgdlgvdltsklsvisvedppqrtagvkvette
dlvaklkeigri