1.97.1.9 cytochrome b - 644812, 657903, 658902 1.97.1.9 cytochrome b 1 cytochrome b per alphabetagamma-trimer 644811 1.97.1.9 heme - 699361 1.97.1.9 heme 0.9 mol per mol of enzyme 671468 1.97.1.9 heme b - 684986 1.97.1.9 iron-sulfur center activity of genes iscU or hscB in the Isc iron-sulfur cluster biosynthesis pathway is required for formation of selenate reductase activity in vivo 744931 1.97.1.9 iron-sulfur centre at least 2 [Fe-S]-centre as prosthetic groups per enzyme molecule 644811 1.97.1.9 molybdopterin - 658902