>1r76A (A:) observed residues (from ATOM records)
avigmneaasaltpsrvsslpdtqraawqeylarseaqlsrdkaslaaelapgqplpppp
aegkgadtmpldkpaawytskaarhvadvivsfqtpaggwgknqprdgalrlpgqhytge
nvakvkrdrdwhyvgtidndatvteirflaqvvsqlapeeaapyrdaalkgieyllasqf
pnggwpqvwpleggyhdaitynddalvhvaellsdiaagrdgfgfvppairtraleatna
aihcivetqvvqdgkrlgwgqqhdaltlrptsarnfepaalsstesarillflmeieaps
davkqairggvawlntsvirdqgakplwsrfysldgnkpvfgdrdktihddvmgisqerr
tgyawyttspqkalsaftkwekrs