siroheme
at least two of three subunits contain two pairs of [Fe4-S4]-centers and siroheme units
[4Fe-4S]-center
at least two of three subunits contain two pairs of [Fe4-S4]-centers and siroheme units
siroheme
binding of two sirohemes and four [4Fe-4S]-clusters per alpha2beta2 structure
[4Fe-4S]-center
binding of two sirohemes and four [4Fe-4S]-clusters per alpha2beta2 structure
siroheme
close to 80% of the siroheme moiety in the enzyme is demetallated
siroheme
cofactor is extensivel demetallated
[4Fe-4S]-center
four centers per enzyme molecule
siroheme
four sirohemes per enzyme molecule
more
no activity is observed with NAD, NADP, FAD or FMN
cytochrome c
octaheme cytochrome
