>1xpoB (B:) observed residues (from ATOM records)
mnltelkntpvselitlgenmglenlarmrkqdiifailkqhaksgedifgdgvleilqd
gfgflrsadssylagpddiyvspsqirrfnlrtgdtisgkirppkegeryfallkvnevn
fdkpennkilfenltplhansrlrmgstedltarvldlaspigrgqrglivappkagktm
llqniaqsiaynhpdcvlmvlliderpeevtemqrlvkgevvastfdepasrhvqvaemv
iekakrlvehkkdviilldsitrlarayntvvpavltggvdanalhrpkrffgaarnvee
ggsltiiatalidtgskmdeviyeefkgtgnmelhlsrkiaekrvfpaidynrsgtrkee
llttqeelqkmwilrkiihpmgeidameflinklamtktnddffemmk