enzyme levels of adenylylsulfate ( aps ) reductase [ ec 1.8.99.2 ] , reductant-activated inorganic pyrophosphatase [ ec 3.6.1.1 ] , sulfite reductase [ ec 1.8.99.1 ] ( desulfoviridin ) , hydrogenase [ ec 1.12.2.1 ] , and mg2+-activated atpase [ ec 3.6.1.3 ] were compared in crude extracts of these cells at various stages of growth .
C0020284
hydrogenase
C0030016
ec