Action of calcium ions on spinach (Spinacia oleracea) chloroplast fructose bisphosphatase and other enzymes of the Calvin cycle
- 15 June 1980
- journal article
- research article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 188 (3) , 775-779
- https://doi.org/10.1042/bj1880775
Abstract
Thiol-treated spinach (Spinacia oleracea) chloroplast fructose bisphosphatase is powerfully inhibited by Ca2+ non-competitively with respect to its substrate, fructose 1,6-bisphosphate. 500 microM-Ca2+ causes virtually complete inhibition and the Ki is 40 microM. Severe inhibition of sedoheptulose bisphosphatase is also caused by Ca2+. A role for Ca2+ in regulation of the Calvin cycle in spinach chloroplasts is proposed.This publication has 12 references indexed in Scilit:
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