Microbodies, malate dehydrogenase

The soluble isozyme is generally considered to take part in the cytoplasmic side of the malate shuttle, providing a means of transporting NADH equivalents, in the form of malate, across the mitochondrial membrane. The mitochondrial enzyme, in addition to its role in the other half of the malate shuttle, is also a necessary component of the tricarboxylic acid cycle. The microbody malate dehydrogenase found in some plants appears to function in the glyoxylate cycle (5) or possibly in photorespiration ( ). [Pg.370]

In the case of purified microbody malate dehydrogenase, this is strongly pH-dependent with marked activation at pH 6.0 at low ionic strength (Zschoche and Ting, 1973). Malate enzyme of Opuntia is also inhibited by NaCl (Mukerji and... [Pg.95]

Zschoche,W. C., Ting, I. P. Purification and properties of microbody malate dehydrogenase from Spinacia oleracea leaf tissue. Arch. Biochem. Biophys. 159,767-776 (1973)... [Pg.198]

Malate Dehydrogenase. Most green plant tissues investigated appear to have three malate dehydrogenase loci two particulate loci, mitochondrial and microbody and a soluble or nonparticulate locus. Multiple forms can and do exist within a locus group (Mukerji and Ting, 1968). [Pg.84]

Rocha, V., Ting, I. P. Tissue distribution of microbody, mitochondrial, and soluble malate dehydrogenase isoenzymes. Plant Physiol. 46,754-756 (1970)... [Pg.192]

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