... 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 O from Corynebacterium ... degradation rate of GmHO-1, indi-cated in Table 4, is comparable to that of SynHO-1 inthe presence of NADPH, FNR, and Fd, and also to that of rHO-1 in the presence of NADPH and CPR.Here, NADPH...