the enzymes used as markers of different pathways of energy liberation from substrates were : lactate dehydrogenase - ldh - ( ec 1.1.1.27 ) , triose-3-phosphate dehydrogenase - tpdh - ( ec 1.2.1.12 ) , glycerol-3-phosphate dehydrogenase - gpdh - ( ec 1.1.1.8 ) , hexokinase - hk - ( ec 2.7.1.1 . ) , malate : nad dehydrogenase - mdh - ( ec 1.1.1.37 ) , citrate synthase - cs - ( ec 4.1.3.7 ) , and 3-hydroxyacetyl coa dehydrogenase - hoadh - ( ec 1.1.1.35 ) .
C0022917
ldh
C0030016
ec 1