>6f23B (B:) observed residues (from ATOM records)
asrlytlvlvlqpqrvllgmkkrgfgagrwngfggkvqegetiedgarrelqeesgltvd
alhkvgqivfefvgepelmdvhvfctdsiqgtpvesdemrpcwfqldqipfkdmwpddsy
wfplllqkkkfhgyfkfqgqdtildytlrevdtv