>4w9tA (A:) observed residues (from ATOM records)
nklellpavdvrdgqavrlvhgvsgsetsygspleaalawqasgaewlhlvdldaafgtg
dnralvaeitgamdikvelsggirddaslaaalatgctrvnlgtaaletpewaakaiaeh
gdriavgldvrgttlkgrggdlyetlarldsegcaryvvtdigkdgtltgpnlellknvc
aatdrpvvasggissledlralaalvpqgvegaivgkalyakaftleealkvvsa