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Occurrence of freed-aspartate and aspartate racemase in the blood shellScapharca broughtonii |
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| Authors: | T. Watanabe K. Shibata Y. Kera Dr. Ryo-Hei Yamada |
| Affiliation: | (1) Department of Chemical Engineering, Ichinoseki National College of Technology, Ichinoseki, Iwate, Japan;(2) Department of BioEngineering, Nagaoka University of Technology, 940-2/88 Nagaoka, Niigata, Japan;(3) Department of Environmental Systems Engineering, Nagaoka University of Technology, 940-2/88 Nagaoka, Niigata, Japan |
| Abstract: | Summary Substantial concentrations of D-aspartate were found in several tissues of Scapharca broughtonii together with approximately equal concentrations ofl-aspartate. The foot and mantle extracts also contained an aspartate racemase activity. The formation ofl-aspartate from the Denantiomer by the foot extract was apparently slower than the reverse reaction, and this unbalance seemed to be due to the presence of an enzyme activity which rapidly convertedl-aspartate tol-alanine. The possible role of D-aspartate in the anaerobiosis was discussed. |
| Keywords: | Amino acids D-Aspartate Aspartate racemase l-Alanine Scapharca broughtonii Bivalve |
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