>3ntxB (B:) observed residues (from ATOM records)
qkksiyvaytggtigmqrsdngyipvsghlqrqlalmpefhrpempdftiheyaplidss
dmtpedwqhiandiqqnydlydgfvilhgtdtmaftasalsfmlenlakpviitgsqipl
aelrsdgqtnllnalylaanhpvnevslffnnqlfrgnrttkahadgfdtfaspnlsvll
eagihirrqssvvsptsngplivhritpqpigvvtiypgisgavvrnfllqpvkalilrs
ygvgnapqkaelldelknasdrgivvvnltqcisgsvnmgnalaqagvisgfdmtveaal
tklhyllsqslspneirqlmqqnlrgeltdt