>3cxxA (A:) observed residues (from ATOM records)
tatvllevpfsargdripdavaelrtrepirkvrtitgaeawlvssyalctqvledrrfs
mketaaagaprlnaltvppevvnnmgniadaglrkavmkaitpkapgleqflrdtansll
dnlitegapadlrndfadplatalhckvlgipqedgpklfrslsiafmssadpipaakin
wdrdieymagilenpnittglmgelsrlrkdpayshvsdelfatigvtffgagvistgsf
lttalisliqrpqlrnllhekpelipagveellrinlsfadglprlatadiqvgdvlvrk
gelvlvlleganfdpehfpnpgsieldrpnptshlahgrgqhfcpgsalgrrhaqigiea
llkkmpgvdlavpidqlvwrtrfqrriperlpvlw