Activities of Enzymes of the Oxidative and the Reductive Pentose Phosphate Pathways in Heterocysts of a Blue-Green Alga | Zendy

Felix Winkenbach | Zendy; C. Peter Wölk | Zendy

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Activities of Enzymes of the Oxidative and the Reductive Pentose Phosphate Pathways in Heterocysts of a Blue-Green Alga

Author(s) -

Felix Winkenbach,

C. Peter Wölk

Publication year - 1973

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.52.5.480

Subject(s) - dehydrogenase , heterocyst , pentose phosphate pathway , biochemistry , hexokinase , enzyme , oxidative phosphorylation , phosphogluconate dehydrogenase , biology , glucose 6 phosphate dehydrogenase , chemistry , glycolysis , anabaena , cyanobacteria , bacteria , genetics

Preparations of heterocysts of Anabaena cylindrica Lemm. had 7- to 8-fold higher activities of glucose 6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase, 2-fold more hexokinase activity, and 0.02 to 0.06 times as much ribulose diphosphate carboxylase and glyceraldehyde 3-phosphate dehydrogenase activities as did whole filaments per milligram soluble protein in cell-free extracts. Time courses of solubilization of glucose 6-phosphate dehydrogenase activity indicated that heterocysts contain 74 to 80% of the total activity of this enzyme in filaments.

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