>2z0pB (B:) observed residues (from ATOM records)
aavilesiflkrsqqkkktsplnfkkrlflltvhklsyyeydfergrrgskkgsidveki
tcvetvvpeknppperqiemeqisiierfpypfqvvydegplyvfspteelrkrwihqlk
nvirynsdlvqkyhpcfwidgqylccsqtaknamgcqilen