Occurrence of free D-aspartate and aspartate racemase in the blood shell Scapharca broughtonii

Substantial concentrations of D-aspartate were found in several tissues of Scapharca broughtonii together with approximately equal concentrations of L-aspartate. The foot and mantle extracts also contained an aspartate racemase activity. The formation of L-aspartate from the D-enantiomer by the foot...

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Bibliographic Details
Published in:	Amino acids Vol. 14; no. 4; pp. 353 - 360
Main Authors:	Watanabe, T, Shibata, K, Kera, Y, Yamada, R
Format:	Journal Article
Language:	English
Published:	Austria 1998
Subjects:	Amino Acid Isomerases - analysis Animals Aspartic Acid - analysis Bivalvia - chemistry Bivalvia - enzymology Chromatography, High Pressure Liquid Gills - chemistry Glutamate Decarboxylase - analysis Isomerism Kinetics
Online Access:	Get full text
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Summary:	Substantial concentrations of D-aspartate were found in several tissues of Scapharca broughtonii together with approximately equal concentrations of L-aspartate. The foot and mantle extracts also contained an aspartate racemase activity. The formation of L-aspartate from the D-enantiomer 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 converted L-aspartate to L-alanine. The possible role of D-aspartate in the anaerobiosis was discussed.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0939-4451
DOI:	10.1007/BF01318854