>4u0xA (A:) observed residues (from ATOM records)
kdqeikklvdqnfkpllekydvpgmavgviqnnkkyemyyglqsvqdkkavnsntifelg
svsklftataggyaknkgkisfddtpgkywkelkntpidqvnllqlatytsgnlalqfpd
evqtdqqvltffkdwkpknpigeyrqysnpsiglfgkvvalsmnkpfdqvlektifpalg
lkhsyvnvpktqmqnyafgynqenqpirvnpgpldapaygvkstlpdmlsfihanlnpqk
yptdiqrainethqgryqvntmyqalgweefsypatlqtlldsnseqivmkpnkvtaisk
epsvkmyhktgstsgfgtyvvfipkeniglvmltnkripneerikaayvvlnaik