>1h74B (B:) observed residues (from ATOM records)
mkvrvkapctsanlgvgfdvfglclkepydvieveaiddkeiiievddkniptdpdknva
givakkmiddfnigkgvkitikkgvkagsglgssaassagtayainelfklnldklklvd
yasygelassgakhadnvapaifggftmvtnyeplevlhipidfkldiliaipnisintk
eareilpkavglkdlvnnvgkacgmvyalynkdkslfgrymmsdkviepvrgklipnyfk
ikeevkdkvygitisgsgpsiiafpkeefidevenilrdyyentirtevgkgvevvix