Aspartate and Alanine Aminotransferases in Early Development of the Keta

Aspartate and Alanine Aminotransferases in Early Development of the Keta We studied the activities of the marker enzymes of physiological state and adaptive reactions, aspartate and alanine aminotransferases, in early development of the keta Oncorhynchus keta. Aspartate aminotransferase with pH optima 6.8, 7.0, 7.6, and 8.0 and alanine aminotransferase with pH optima 7.0, 7.4, 7.6, 7.8, 8.0, and 8.2 were found in the eggs, larvae, and fry. The succession of enzymes with different pH takes place during ontogenesis, as well as stage specific changes in their activity. The maximum enzymatic activity was recorded in the larvae during their rise for “afloat.” A correlation was established between the dynamics of enzymatic activity and soluble nitrogen and amine nitrogen contents. Russian Journal of Developmental Biology Springer Journals

Aspartate and Alanine Aminotransferases in Early Development of the Keta

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Life Sciences; Animal Anatomy / Morphology / Histology
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