Abstract
Lowconcentrations (0.5-10 pm)ofantimycin A wereshown toincrease therateofC02fixation, 02evolution andinorganic phosphate esterification inintact spinach (Spinacia oleracea) chloroplasts. Theincrease washighest whenthelight intensity wassaturating. Stimulation wasindependent ofthebicarbonate concentration andwasaccompanied byanenhancement inthe synthesis ofglycerate 3-phosphate witha decrease indihydroxyacetone phosphate. Theantibiotic decreased theMichaelis constant ofthechloroplast butnotofribulose 1,5-diphosphate carboxylase forbicarbonate. Itwassuggested thatantimycin A isaffecting thatportion (outer envelope) oftheintact chloroplast whichcontains theenzymemechanism forcontrolling the paceofC02fixation.
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Claims 10
Claim · model-written summary
Antimycin A increased carbon dioxide fixation rate in intact spinach chloroplasts.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- antimycin Ae0
- Outcome
- therateofC02fixatione0
- Direction
- toincreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lowconcentrations (0.5-10 pm)ofantimycin A wereshown toincrease therateofC02fixation, 02evolution andinorganic phosphate esterification inintact spinach (Spinacia oleracea) chloroplasts”
Claim · model-written summary
Antimycin A increased oxygen evolution rate in intact spinach chloroplasts.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- antimycin Ae0
- Outcome
- 02evolutione0
- Direction
- toincreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lowconcentrations (0.5-10 pm)ofantimycin A wereshown toincrease therateofC02fixation, 02evolution andinorganic phosphate esterification inintact spinach (Spinacia oleracea) chloroplasts”
Claim · model-written summary
Antimycin A increased inorganic phosphate esterification in intact spinach chloroplasts.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- antimycin Ae0
- Outcome
- inorganic phosphate esterificatione0
- Direction
- toincreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lowconcentrations (0.5-10 pm)ofantimycin A wereshown toincrease therateofC02fixation, 02evolution andinorganic phosphate esterification inintact spinach (Spinacia oleracea) chloroplasts”
Claim · model-written summary
The stimulation was highest at saturating light intensity.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- thelight intensity wassaturatinge0
- Outcome
- Theincreasee0
- Direction
- washigheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Theincrease washighest whenthelight intensity wassaturating”
t0“Spinach”
Claim · model-written summary
Stimulation was independent of bicarbonate concentration.
- Taxon
- SpinachSpinacia oleraceat0
- Compound
- bicarbonatee0
- Outcome
- Stimulatione0
- Direction
- wasindependente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stimulation wasindependent ofthebicarbonate concentration”
t0“Spinach”
Claim · model-written summary
Antimycin A enhanced glycerate 3-phosphate synthesis.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- Antimycin At0
- Outcome
- synthesis ofglycerate 3-phosphatee0
- Direction
- anenhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wasaccompanied byanenhancement inthe synthesis ofglycerate 3-phosphate”
t0“Antimycin A on Photosynthesis ofIntact Spinach”
Claim · model-written summary
Antimycin A decreased dihydroxyacetone phosphate.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- Antimycin At0
- Outcome
- dihydroxyacetone phosphatee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“witha decrease indihydroxyacetone phosphate”
t0“Antimycin A on Photosynthesis ofIntact Spinach”
Claim · model-written summary
Antimycin A decreased the chloroplast Michaelis constant for bicarbonate.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- Antimycin At0
- Compound
- bicarbonatee0
- Outcome
- theMichaelis constant ofthechloroplaste0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Theantibiotic decreased theMichaelis constant ofthechloroplast butnotofribulose 1,5-diphosphate carboxylase forbicarbonate”
t0“Antimycin A on Photosynthesis ofIntact Spinach”
Claim · model-written summary
Antimycin A did not decrease the Michaelis constant of ribulose 1,5-diphosphate carboxylase for bicarbonate.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- Antimycin At0
- Gene
- ribulose 1,5-diphosphate carboxylasee0
- Outcome
- theMichaelis constant ofthechloroplast butnotofribulose 1,5-diphosphate carboxylasee0
- Direction
- butnote0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased theMichaelis constant ofthechloroplast butnotofribulose 1,5-diphosphate carboxylase forbicarbonate”
t0“Antimycin A on Photosynthesis ofIntact Spinach”
Claim · model-written summary
The authors suggested antimycin A acts on the chloroplast outer envelope mechanism controlling carbon fixation.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- antimycin Ae0
- Outcome
- paceofC02fixatione0
- Qualifier
- outer envelopee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Itwassuggested thatantimycin A isaffecting thatportion (outer envelope) oftheintact chloroplast whichcontains theenzymemechanism forcontrolling the paceofC02fixation”
t0“Spinach”