>3u7uA (A:) observed residues (from ATOM records)
qsvcagtenklsslsdleqqyralrkyyencevvmgnleitsiehnrdlsflrsvrevtg
yvlvalnqfrylplenlriirgtklyedryalaiflnyrkdgnfglqelglknlteilng
gvyvdqnkflcyadtihwqdivrnpsnltlvssgcgrchksctgrcwgptenhcqtltrt
vcaeqcdgrcygpyvsdcchrecaggcsgpkdtdcfacmnfndsgacvtqcpqtfvynpt
tfqlehnfnakytygafcvkkcphnfvvdssscvracpsskmeveengikmckpctdicp
kacdgigtgslmsaqtvdssnidkfinctkingnliflvtgihgdpynaieaidpeklnv
frtvreitgflniqswppnmtdfsvfsnlvtiggrvlysglsllilkqqgitslqfqslk
eisagniyitdnsnlcyyhtinwttlfstinqrivirdnrkaenctaegmvcnhlcssdg
cwgpgpdqclscrrfsrgriciescnlydgefrefendsicvecdpqcekmedglltchg
pgpdnctkcs