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Aspartate kinase regulation in maize: Regulation by calcium and calmodulin.

Research output: Contribution to journalJournal article

Published

<mark>Journal publication date</mark>1992
<mark>Journal</mark>Phytochemistry
Issue11
Volume31
Number of pages4
Pages3735-3738
<mark>Original language</mark>English

Abstract

Three aspartate kinase isoenzymes (EC 2.7.2.4) sensitive to lysine, threonine and S-adenosylmethionine isolated from maize cultures, have been studied in the presence of calcium and spinach calmodulin. Neither was able to produce any change in aspartate kinase activity. Apart from the normal inhibition caused by the addition of lysine or threonine, none of the calcium antagonists tested showed a significant inhibition of activity. These results confirm those previously described for carrot in which no evidence was obtained for a regulatory role of calcium or calmodulin on aspartate kinase activity.