>1pxtB (B:) observed residues (from ATOM records)
llekrpedvvivaanrsaigkgfkgafkdvntdyllynflnefigrfpeplradlnliee
vacgnvlnvgagatehraaclasgipystpfvalnrqcssgltavndiankikvgqidig
lalgvesmtnnyknknreakkclmgitnenrkdqdefaansyqkaykakneglfedeilp
iklpdgsicqsdegprpnvtaeslsqvsdgvagvllarrsvanqlnlpvlgryidfqtvg
vppeimgvgpayaipkvleatglqvqdidifeineafaaqalycihklgidlnkvnprgg
aialghplgctgarqvatilrelkkdqigvvsmcigtgmgaaaifike