>3ccxA (A:) observed residues (from ATOM records)
lvhvasvekgrsyedfqkvynaialklreddeydnyigygpvlvrlawhisgtwdkhdnt
ggsyggtyrfkkefndpsnaglqngfkflepihkefpwissgdlfslggvtavqemqgpk
ipwrcgrvdtpedttpdngrlpdydkdagyvrtffqrlnmndrevvalmgahalgkthlk
nsgyegpwgaannvftnefylnllnedwklekndanneqwdsksgymmlptdysliqdpk
ylsivkeyandqdkffkdfskafekllengitfpkdapspfifktleeqgl