>1r31A (A:) observed residues (from ATOM records)
ldsrlpafrnlspaarldhigqllglshddvsllanagalpmdiangmienvigtfelpy
avasnfqingrdvlvplvveepsivaaasymaklaranggfttsssaplmhaqvqivgiq
dplnarlsllrrkdeiielanrkdqllnslgggcrdievhtfadtprgpmlvahlivdvr
damgantvntmaeavaplmeaitggqvrlrilsnladlrlaraqvritpqqletaefsge
aviegildayafaavdpyraathnkgimngidplivatgndwraveagahayacrsghyg
slttwekdnnghlvgtlempmpvglvggatkthplaqlslrilgvktaqalaeiavavgl
aqnlgamralategiq