Glutamate dehydrogenase from liver of euthermic and hibernating Richardson's ground squirrels: evidence for two distinct enzyme forms.


Glutamate dehydrogenase (GDH) was purified to homogeneity from the liver of euthermic (37 degrees C body temperature) and hibernating (torpid, 5 degrees C body temperature) Richardson's ground squirrels (Spermophilus richardsonii). SDS-PAGE yielded a subunit molecular weight of 59.5+/-2 kDa for both enzymes, but reverse phase and size exclusion HPLC showed… (More)


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