the imported precursors of the mammalian matrix enzymes malate dehydrogenase [ ( s ) -malate : nad+ oxidoreductase , ec 1.1.1.37 ] and ornithine transcarbamylase ( carbamoyl-phosphate : l-ornithine carbamoyltransferase , ec 2.1.3.3 ) are cleaved to their mature subunits in two steps , each catalyzed by matrix-localized processing proteases .
C0024544
malate dehydrogenase
C0030016
ec 1