Skip to main content
Plant Physiology logoLink to Plant Physiology
. 1977 Jan;59(1):69–73. doi: 10.1104/pp.59.1.69

Properties and Regulation of Aspartate Kinase from Barley Seedlings (Hordeum vulgare L.)

Peter R Shewry 1, Benjamin J Miflin 1
PMCID: PMC542332  PMID: 16659791

Abstract

Aspartate kinase (EC 2.7.2.4) has been purified 8-fold and characterized from germinating barley (Hordeum vulgare) seedlings. The enzyme is inhibited 50% by 0.7 mm l-lysine and almost completely at 5 mm. l-Methionine does not affect the enzyme on its own, but at low concentrations (0.1−1 mm) increases the inhibition in the presence of lysine, indicating that the two amino acids act as cooperative feedback regulators.

Full text

PDF
73

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Bryan J. K. Studies on the catalytic and regulatory properties of homoserine dehydrogenase of Zea mays roots. Biochim Biophys Acta. 1969 Feb 11;171(2):205–216. doi: 10.1016/0005-2744(69)90154-5. [DOI] [PubMed] [Google Scholar]
  2. Bryan P. A., Cawley R. D., Brunner C. E., Bryan J. K. Isolation and characterization of a lysine-sensitive aspartokinase from a multicellular plant. Biochem Biophys Res Commun. 1970 Dec 9;41(5):1211–1217. doi: 10.1016/0006-291x(70)90215-9. [DOI] [PubMed] [Google Scholar]
  3. Heber U., Santarius K. A. Direct and indirect transfer of ATP and ADP across the chloroplast envelope. Z Naturforsch B. 1970 Jul;25(7):718–728. doi: 10.1515/znb-1970-0714. [DOI] [PubMed] [Google Scholar]
  4. Keys A. J. The intracellular distribution of free nucleotides in the tobacco leaf. Formation of adenosine 5'-phosphate from adenosine 5'-triphosphate in the chloroplasts. Biochem J. 1968 Jun;108(1):1–8. doi: 10.1042/bj1080001. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
  6. Matthews B. F., Gurman A. W., Bryan J. K. Changes in Enzyme Regulation during Growth of Maize: I. Progressive Desensitization of Homoserine Dehydrogenase during Seedling Growth. Plant Physiol. 1975 Jun;55(6):991–998. doi: 10.1104/pp.55.6.991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Norris R. D., Lea P. J. The use of amino acid analogues in biological studies. Sci Prog. 1976 Spring;63(249):65–85. [PubMed] [Google Scholar]
  8. Wong K. F., Dennis D. T. Aspartokinase from wheat germ: isolation, characterization, and regulation. Plant Physiol. 1973 Feb;51(2):322–326. doi: 10.1104/pp.51.2.322. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Wong K. F., Dennis D. T. Aspartokinase in Lemna minor L: Studies on the in Vivo and in Vitro Regulation of the Enzyme. Plant Physiol. 1973 Feb;51(2):327–331. doi: 10.1104/pp.51.2.327. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES