>4c2aB (B:) observed residues (from ATOM records)
hpicevskvashlevncdkrrltalppdlpkdttilhlsenllytfslatlmpytrltql
nldrceltklqvdgtlpvlgtldlshnqlqslpllgqtlpaltvldvsfnrltslplgal
rglgelqelylkgnelktlppglltptpkleklslannrltelpagllnglenldtlllq
enslytipkgffgshllpfaflhgnpwlcnceilyfrrwlqdnaenvyvwkqvvdvkavt
snvasvqcdnsdkfpvykypgkgcpt