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The enzymes in C4 photosynthesis
[Extract] The history of the resolution of C4 photosynthesis follows a pattern of demonstrating the operation of unique photosynthetic biochemistry by various means and then identifying the enzymes… Expand
Carbonic Anhydrase Activity in Leaves and Its Role in the First Step of C4 Photosynthesis
In C4 plants carbonic anhydrase catalyzes the critical first step of C4 photosynthesis, the hydration of CO2 to bicarbonate. The maximum activity of this enzyme in C4 leaf extracts, measured by H+… Expand
Regulation of C4 photosynthesis: purification and properties of the protein catalyzing ADP-mediated inactivation and Pi-mediated activation of pyruvate,Pi dikinase.
Pyruvate,Pi dikinase regulatory protein (PDRP) has been highly purified from maize leaves, and its role in catalyzing both ADP-mediated inactivation (due to phosphorylation of a threonine residue)… Expand
Carbonic anhydrase activity in leaves and its role in the first step of c(4) photosynthesis.
In C(4) plants carbonic anhydrase catalyzes the critical first step of C(4) photosynthesis, the hydration of CO(2) to bicarbonate. The maximum activity of this enzyme in C(4) leaf extracts, measured… Expand
Low bundle sheath carbonic anhydrase is apparently essential for effective c(4) pathway operation.
Bundle sheath cells from leaves of a variety of C(4) species contained little or no carbonic anhydrase activity. The proportion of total leaf carbonic anhydrase in extracts of bundle sheath cells… Expand
Pyruvate,Pi Dikinase and NADP-Malate Dehydrogenase in C4 Photosynthesis: Properties and Mechanism of Light/Dark Regulation
[Extract] C4 Cycle and its Significance in Photosynthesis This review considers two key enzymes of the C4 pathway of photosynthesis, pyruvate,Pi dikinase (PPDK) and NADP-malate dehydrogenase… Expand
Identification, cloning and sequencing of two major venom proteins from the box jellyfish, Chironex fleckeri.
- D. Brinkman, J. Burnell
- Biology, Medicine
- Toxicon : official journal of the International…
- 1 November 2007
Two of the most abundant proteins found in the nematocysts of the box jellyfish Chironex fleckeri have been identified as C. fleckeri toxin-1 (CfTX-1) and toxin-2 (CfTX-2). The molecular masses of… Expand
Metabolite diffusion into bundle sheath cells from c(4) plants: relation to c(4) photosynthesis and plasmodesmatal function.
- H. Weiner, J. Burnell, I. Woodrow, H. W. Heldt, M. D. Hatch
- Biology, Medicine
- Plant physiology
- 1 November 1988
The present studies provide the first measurements of the resistance to diffusive flux of metabolites between mesophyll and bundle sheath cells of C(4) plants. Species examined were Panicum… Expand
Cytokinin Is Required to Induce the Nitrogen-Dependent Accumulation of mRNAs for Phosphoenolpyruvate Carboxylase and Carbonic Anhydrase in Detached Maize Leaves.
Previous studies with intact maize (Zea mays L.) plants indicated that phosphoenolpyruvate carboxylase (PEPC) levels are controlled by nitrogen (N) availability and that this regulation is presumably… Expand
Sulphur metabolism in Paracoccus denitrificans. Purification, properties and regulation of serine transacetylase, O-acetylserine sulphydrylase and beta-cystathionase.
1. Serine transacetylase, O-acetylserine sulphydrylase and beta-cystathionase were purified from Paracoccus denitrificans strain 8944. 2. Serin transacetylase was purified 150-fold. The enzyme has a… Expand