>1u75A (A:) observed residues (from ATOM records)
ttplvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkh
dntggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemq
gpkipwrcgrvdtpedttpdngrlpdadkdagyvrtffqrlnmndrevvalmgahalgkt
hlknsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliq
dpkylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl