>1xygC (C:) observed residues (from ATOM records)
kdirigllgasgytgaeivrllanhphfqvtlmtadrkagqsmesvfphlraqklptlvs
vkdadfstvdavfcclphgttqeiikelptalkivdlsadfrlrniaeyeewygqphkav
elqkevvyglteilredikkarlvanpgcypttiqlplvpllkanlikheniiidaksgv
sgagrgakeanlyseiaegissygvtrhrhvpeieqglsdvaqskvtvsftphlmpmirg
mqstiyvemapgvrtedlhqqlktsyedeefvkvldegvvprthnvrgsnychmsvfpdr
ipgraiiisvidnlvkgasgqalqnlnimlgypettgllhqplfp