... absorption bands. Heme catabolism byHOs of mammals, pathogenic bacteria, cyanobacteriaand probably insects is considered to have a similarmechanism, because the characteristic absorptionbands of verdoheme ... T, Zhang X, Sun D,Sato M, Sasahara M, Kayama T, Ikeda-Saito M &Yoshida T (2000) Histidine 20, the crucial proximalaxial heme ligand of bacterial heme oxygenase Hmu Ofrom Corynebacterium ... Then, a broad bandappeared at around 660 nm, and was maximal 9–12 minafter initiation of the reaction. The spectral features of the final reaction mixture were analogous, but not iden-tical,...