>1xc3A (A:) observed residues (from ATOM records)
amlggieaggtkfvcavgredgtiidriefptkmpdetiekviqyfsqfslqaigigsfg
pvdndktsqtygtitatpkagwrhypflqtvknemkipvgfstdvnaaalgeflfgeakg
ldsclyitigtgigagaivegrllqglshpemghiyirrhpddvyqgkcpyhgdcfegla
sgpaiearwgkkaadlsdiaqvwelegyyiaqalaqyililapkkiilgggvmqqkqvfs
yiyqyvpkimnsyldfselsddisdyivpprlgsnagiigtlvlahqalqaeaas