Abstract
The 5 isoenzymes of potato (S. tuberasum) lactate dehydrogenase [LDH] were resolved by affinity chromatography. Mixtures of isoenzymes LDH-1 and LDH-5 dissociate and reassociate during freezing and thawing to produce 5 isoenzymes. Potato LDH isoenzymes are primary isoenzymes of the vertebrate type, which are composed of 2 subunit types.