Distribution of aromatic l-amino acid decarboxylase in tissues of skipjack tuna using l-DOPA as the substrate |
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| Authors: | T Nagai M Hamada N Kai Y Tanoue F Nagayama †‡ |
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| Institution: | Department of Food Science and Technology, National Fisheries University, Nagata-honmachi 2-7-1, Shimonoseki 759-65;Department of Food Science and Technology, Tokyo University of Fisheries, Konan, Minato, Tokyo 108, Japan |
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| Abstract: | Aromatic L-amino acid decarboxylase activity was measured in brain, heart, intestine, kidney, liver, muscle, pyloric caeca, spleen and stomach of skipjack, using L-3,4–dihydroxyphenylalanine as the substrate. Aromatic L-amino acid decarboxylase activity was found to be present in all of the organs studied. The highest activity was found in the intestine (1774 μmol min −1 g−1 wet wt of tissue). The liver showed the lowest activity (48.7 umol min −1 g −1). |
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| Keywords: | aromatic L-amino acid decarboxylase skipjack organ distribution intestine liver L-3 4-dihydroxyphenylalanine |
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