[Activity and isoenzyme composition of the hexokinase and lactate dehydrogenase of different rabbit muscles].

The hexokinase activity (HK) exceeded several times and the lactate dehydrogenase activity (LDH) was lower in soluble fraction of rabbit slow sceletal muscle as compared with fast sceletal muscle. In the soluble fraction of stomach smooth muscle the HK activity was higher and the LDH activity--lower than in slow sceletal muscle. The LDH isozyme spectrum of soduble fraction of smooth muscle was similar to the spectrum of slow muscle (mobile H-forms prevailed). Muscles of pyloric and fundal stomach parts differed in the enzymes activity and their isozyme content.