Besides genes encoding curli fimbriae, all EcO157 strains carried genes encoding E. coli common pilus (ECP), hemorrhagic E. coli pilus (HCP), type 1 fimbriae, and several protein adhesins such as Cah, EaeH, EhaA, and EhaG. The gene discussed is RNASE3; the disease is hereditary coproporphyria.