PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9920736-5 1999 Addition of manganese-substituted cytochrome b5, which failed to serve as an electron donor to CYP2B4, augmented the amount of hemoprotein existing in form of a low-spin complex with Adx and affected the ferredoxin-dependent reduction kinetics through causing a proportional rise in both Km and Vmax. Manganese 12-21 ferredoxin 1 Homo sapiens 183-186