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Choline Kinase Activity in Castor Bean Endosperm

  • Anthony J. Kinney
  • Thomas S. MooreJr.

Abstract

The reaction catalyzed by choline kinase (E.C. 2.7.1.32: AT: cholinephosphotransferase) is the first committed reaction of the nucleotide pathway for phosphatidylcholine (PtdCho) biosynthesis. Various theoretical considerations have led to the suggestion that this reaction is far from equilibrium and, along with the cytidylyltransferase reaction, may be rate-limiting for PtdCho biosynthesis in some animal tissues (1). As part of our studies on the regulation of PtdCho biosynthesis in plants we have investigated the properties of this enzyme and the in vivo concentrations of metabolites involved in the reaction in postgermination castor bean endosperm.

Keywords

Tissue Water Content Choline Kinase Saturate Substrate Concentration Choline Incorporation Commit Reaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Anthony J. Kinney
    • 1
  • Thomas S. MooreJr.
    • 1
  1. 1.Department of BotanyLouisiana State UniversityBaton RougeUSA

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