Aspartate kinase complex of Anabaena variabilis during the early period of development of cyanophage A-1
Koltukova, N.V.; Kadyrova, G.K.; Lysenko, T.G.; Mendzhul, M.I.
Ukrainskii Biokhimicheskii Zhurnal 66(2): 41-48
1994
ISSN/ISBN: 0201-8470 PMID: 7998339 Document Number: 435849
Aspartate kinase activity in cells of A. variabilis has been studied in the dynamics of development of virus infection. An early period of reproduction of cyanophage A-1 has been determined to be conjugated with the increase of biosynthesis of amino acids from aspartate family. Five isoenzymes of aspartate kinase were isolated and purified from A. variabilis cells during early development period of cyanophage A-1. Physicochemical properties and influence of amino acids of aspartate family on the activity of homogeneous isoenzymes have been studied. Retroinhibition effect was not observed in infected cyanobacteria cells, which probably enables one to increase 2-7 times the concentration of amino acids in a cell. Such an increase of the amino acids pool is apparently necessary for realization of viral genome strategy.