>1u74A (A:) observed residues (from ATOM records) ttplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkh dntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemq gpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkt hlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliq dpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl