>2c73B (B:) observed residues (from ATOM records)
nkcdvvvvgggisgmaaakllhdsglnvvvleardrvggrtytlrnqkvkyvdlggsyvg
ptqnrilrlakelgletykvneverlihhvkgksypfrgpfppvwnpityldhnnfwrtm
ddmgreipsdapwkaplaeewdnmtmkelldklcwtesakqlatlfvnlcvtaethevsa
lwflwyvkqcggttriisttnggqerkfvggsgqvserimdllgdrvklerpviyidqtr
envlvetlnhemyeakyvisaipptlgmkihfnpplpmmrnqmitrvplgsvikcivyyk
epfwrkkdycgtmiidgeeapvaytlddtkpegnyaaimgfilahkarklarltkeerlk
klcelyakvlgslealepvhyeeknwceeqysggcyttyfppgiltqygrvlrqpvdriy
fagtetathwsgfmegaveageraareilhamgkipedeiwqsepesvdvpaqpitttfl
erhlpsvpgllrli