title: The intracellular distribution of adenylate kinase in the leaves of spinach, wheat and barley.
abstract: Of the total adenylate-kinase activity in 10-d-old barley and wheat leaves, 40-50% is localised in the chloroplasts, while in mature spinach leaves 50-70% of the enzyme is chloroplastic. The extra-chloroplastic adenylate-kinase activity is associated with the mitochondria, very little, if any, is freely soluble in the cytoplasm. The adenylate pool of the cytoplasm could have access to adenylate-kinase activity in the intermitochondrial space because of the free permeation of adenylates across the outer mitochondrial membrane. Thus the adenylate pool of the cytoplasm could be subject to adenylate-kinase equilibrium. The mitochondrial adenylate kinase appeared to the localised exclusively in the intermembrane space.
authors.affiliation: ARC Research Group on Photosynthesis, University of Sheffield, S10 2TN, Sheffield, UK.
authors.forename: K
authors.initials: K
authors.lastname: Birkenhead
authors.forename: D
authors.initials: D
authors.lastname: Walker
authors.forename: C
authors.initials: C
authors.lastname: Foyer