>6nb1H (H:) observed residues (from ATOM records) vpmvfdiysrllkervifltgqvedhmanlivaqmlfleaenpekdiylyinspggvita gmsiydtmqfikpdvsticmgqaasmgaflltagakgkrfclpnsrvmihqplggyqgqa tdieihareilkvkgrmnelmalhtgqsleqierdterdrflsapeaveyglvdsilthr n