>2a1uB (B:) SEQRES residues
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viavscgpaqcqetirtalamgadrgihvevppaeaerlgplqvarvlaklaekekvdlv
llgkqaidddcnqtgqmtagfldwpqgtfasqvtlegdklkveraidggletlrlklpav
vtadlrlnepryatlpnimkakkkkievikpgdlgvdltsklsvisvedppqrtagvkve
ttedlvaklkeigri