ISSN:
1573-4927
Keywords:
Rhinichthys cataractae
;
longnose dace
;
malate dehydrogenase
;
malate dehydrogenase isozymes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The interspecies homology of dace supernatant (A2, AB, B2) and mitochondrial (C2) malate dehydrogenase isozymes has been established through cell fractionation and tissue distribution studies. Isolated supernatant malate dehydrogenase (s-MDH) isozymes show significant differences in Michaelis constants for oxaloacetate and in pH optima. Shifts in s-MDH isozyme pH optima with temperature may result in immediate compensation for increase in ectotherm body pH with decrease in temperature, but duplicate s-MDH isozymes are probably maintained through selection for tissue specific regulation of metabolism.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00484591
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