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“fructose”

735 matches

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plus 532 non-evaluative

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Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

Sorbitol may be synthesized through fructose or fructose 6-phosphate rather than glucose routes.

Compound: fructose or fructose 6-phosphatee0
Outcome: Sorbitole0
Qualifier: rather than glucose or glucose 6-phosphatee0

Not reportedTaxon

Verbatim

e0
“Sorbitol may be synthesized by way of fructose or fructose 6-phosphate rather than glucose or glucose 6-phosphate”
✓ located verbatim in the source · abstract, characters 574–687

Title

Synthesis of Sorbitol in Apricot Leaves

RL Bieleski; RJ Redgwell Australian Journal of Plant Physiology 1977. doi:10.1071/pp9770001

Other claims from this paper (9)

Observation Carbon labeling was consistent with the normal C3 photosynthetic pathway.
Observation Fructose 6-phosphate labeled faster than glucose 6-phosphate.
Observation Fructose labeled faster than glucose.
Observation Sorbitol was the major photosynthetic end product.
Observation Sorbitol became the predominant labeled compound within 10 minutes.
Observation Sorbitol held over half the radioactivity after 30 minutes.
Observation Sorbitol phosphate represented 2% of total hexose monophosphate.
Observation Sorbitol phosphate labeled as fast as the hexose monophosphates.
Mechanism The proposed sorbitol pathway proceeds from fructose 6-phosphate through sorbitol phosphate to sorbitol.

Observationobservedoriginal resultmeasured

Claim · model-written summary

The enzyme was specific for fructose 1,6-bisphosphate.

Taxon: spinachSpinacia oleraceat0
Gene: cytoplasmic fructose-1,6-bisphosphataset0
Outcome: specific for fructose 1,6-bisphosphatee0

Verbatim

t0
“spinach leaf cytoplasmic fructose-1,6-bisphosphatase”
✓ located verbatim in the source · title, characters 31–83

e0
“the enzyme was specific for fructose 1,6-bisphosphate”
✓ located verbatim in the source · abstract, characters 250–303

Title

Purification and properties of spinach leaf cytoplasmic fructose-1,6-bisphosphatase.

G. Zimmermann; G.J. Kelly; E. Latzko Journal of Biological Chemistry 1978. doi:10.1016/s0021-9258(17)34561-1

Other claims from this paper (11)

Observation Cytoplasmic fructose-1,6-bisphosphatase was purified from spinach leaves to apparent homogeneity.
Observation The spinach enzyme is a tetramer of molecular weight about 130,000.
Observation At pH 7.5, Km for fructose 1.6-bisphosphate was 2.5 micron.
Observation At pH 7.5, Km for MgCl2 was 0.13 mM.
Observation Mg2+ saturation required lower concentrations at pH 8 than at pH 7.
Intervention effect AMP inhibited enzyme activity.
Intervention effect High fructose 1,6-bisphosphate concentrations inhibited enzyme activity.
Intervention effect Ammonium sulfate relieved inhibition by high fructose 1,6-bisphosphate concentrations.
Intervention effect Ammonium sulfate inhibited activity when substrate concentrations were low.
Observation Acetylation studies indicated distinct AMP regulatory and catalytic sites.
Mechanism The enzyme may contribute to regulation of sucrose biosynthesis in leaves.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Fructose labeled faster than glucose.

Outcome: fructosee0
Direction: more rapidlye0
Comparator: glucosee0

Not reportedTaxon

Verbatim

e0
“fructose was more rapidly labelled than glucose”
✓ located verbatim in the source · abstract, characters 311–358

Title

Synthesis of Sorbitol in Apricot Leaves

RL Bieleski; RJ Redgwell Australian Journal of Plant Physiology 1977. doi:10.1071/pp9770001

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Fructose made up 39% of nectar sugars.

Taxon: Arceuthobium abietinum Engelm.Arceuthobium abietinume1
Outcome: fructosee0
Value: 39%e0

Verbatim

e0
“fructose (39%)”
✓ located verbatim in the source · abstract, characters 352–366

e1
“Arceuthobium abietinum Engelm.”
✓ located verbatim in the source · abstract, characters 61–91

Title

Analysis of sugars in dwarf mistletoe nectar

J. W. Brewer; K. J. Collyard; C. E. Lott Jr. Canadian Journal of Botany 1974. doi:10.1139/b74-328

Other claims from this paper (6)

Observation Flowers produced nectar droplets of 0.24 μliter.
Observation Nectar contained 58–92% total solids.
Observation Glucose made up 48% of nectar sugars.
Observation Sucrose made up 11% of nectar sugars.
Observation Other sugars occurred in traces.
Mechanism The authors suggested concentrated nectar probably attracts insect pollinators and may help mistletoe spread.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Raffinose and fructose were detected.

Taxon: riceOryza sativat0
Outcome: raffinose, and fructosee0

Not reportedDirection

Verbatim

e0
“raffinose, and fructose were also detected.”
✓ located verbatim in the source · abstract, characters 827–870

t0
“Rice Grain”
✓ located verbatim in the source · title, characters 27–37

Title

Biochemical Changes in the Rice Grain during Germination

Evelyn P. Palmiano; Bienvenido O. Juliano PLANT PHYSIOLOGY 1972. doi:10.1104/pp.49.5.751

Other claims from this paper (18)

Observation Germination changes were generally faster in darkness than light.
Observation Oxygen uptake increased starting on day two.
Observation RNase activity increased starting on day two.
Observation The root protruded on day two.
Observation The coleoptile appeared on day three.
Observation The primary leaf appeared on day four.
Observation ATP level peaked on day four.
Observation Amylase and R enzyme activities increased during starch degradation.
Observation Phosphorylase activity tended to decline during starch degradation.
Observation A new alpha amylase isozyme band appeared during germination.
Observation Glucose was the major starch degradation product.
Observation Sucrose, maltose and maltotriose were detected.
Observation Protease activity peaked on day five or six.
Association Protease activity closely tracked increases in soluble amino nitrogen and soluble protein.
Observation With gibberellin As, protease activity peaked after 2.5 days in embryoless seed halves.
Observation With gibberellin As, alpha amylase activity peaked on day five in embryoless seed halves.
Intervention effect Cycloheximide inhibited production of alpha amylase, protease and R enzyme.
Intervention effect Actinomycin D inhibited production of alpha amylase and R enzyme.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Both spinach enzymes specifically hydrolyse fructose 1,6-bisphosphate to fructose 6-phosphate and inorganic phosphate.

Taxon: SpinachSpinacia oleraceat0
Gene: enzymese0
Outcome: hydrolysis of fructose 1,6-bisphosphate to fructose 6-phosphate and inorganic phosphatee0

Verbatim

e0
“Both enzymes catalyse specifically the hydrolysis of fructose 1,6-bisphosphate to fructose 6-phosphate and inorganic phosphate and show an absolute requirement for Mg2®.”
✓ located verbatim in the source · abstract, characters 451–620

t0
“Evidence for a Hexosediphosphatase from the Cytoplasm of Spinach Leaves”
✓ located verbatim in the source · title, characters 0–71

Title

Evidence for a Hexosediphosphatase from the Cytoplasm of Spinach Leaves

Erwin Latzko; Gerhard Zimmermann; Urs Feller Biological Chemistry 1974. doi:10.1515/bchm2.1974.355.1.321

Other claims from this paper (10)

Observation Spinach leaf extracts yielded two peaks of hexosediphosphatase activity.
Observation Spinach leaves contain chloroplast and cytoplasmic hexosediphosphatases.
Observation The purified enzyme preparations contained only chloroplast hexosediphosphatase.
Observation Both spinach enzymes absolutely require Mg2®.
Association Mg2® concentration did not affect the cytoplasmic enzyme pH optimum.
Observation The cytoplasmic enzyme had a lower pH optimum than the chloroplast enzyme, 7.5 versus 8.5.
Observation The cytoplasmic enzyme had greater affinity for fructose bisphosphate than the chloroplast enzyme.
Intervention effect The cytoplasmic enzyme was not activated by dithiothreitol.
Intervention effect The cytoplasmic enzyme was not activated by cystamine.
Intervention effect Adenosine 5'-phosphate inhibited the cytoplasmic enzyme.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Filter-sterilized fructose medium benefited growth of intact Cruciferae.

Taxon: CruciferaeBrassicaceaee0
Treatment: fructose media sterilized by filtratione0
Outcome: growthe0
Direction: beneficiale0

Not reportedComparator

Verbatim

e0
“fructose media sterilized by filtration are clearly beneficial for the growth of intact plants of Cruciferae”
✓ located verbatim in the source · abstract, characters 222–330

Title

‘Fructose Effect’ in Higher Plants*

RÉDEI G. P. Annals of Botany 1974. doi:10.1093/oxfordjournals.aob.a084812

Other claims from this paper (12)

Observation Fructose decomposed faster during autoclaving than glucose or sucrose.
Mechanism Plants suffered on autoclaved fructose media because toxic degradation products accumulated.
Observation Early fructose breakdown products absorbing near 230 nm were apparently harmless.
Intervention effect Prolonged heating shifted the absorption maximum to around 285 nm.
Observation 5-hydroxymethyl-2-furaldehyde was toxic in the 10-4 M range.
Observation Hydroxyacetyl furan was toxic in the 10-4 M range.
Method / resource Thin layer chromatography separated at least ten decomposition-product hydrazones.
Intervention effect Cyclic adenosine monophosphate did not relieve toxicity of autoclaved fructose.
Association The adverse fructose-medium effect in crucifers was unrelated to sugar chelation.
Observation Medium acidification during autoclaving contributed only a minor effect.
Mechanism 5-hydroxymethyl-2- furaldehyde was identified as the primary cause of autoclaved fructose toxicity.
Mechanism Other decomposition products added to the toxicity of autoclaved fructose.

Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

The proposed sorbitol pathway proceeds from fructose 6-phosphate through sorbitol phosphate to sorbitol.

Compound: fructose 6-phosphate → sorbitol phosphatee0
Outcome: sorbitole0
Qualifier: fructose 6-phosphate → sorbitol phosphate → sorbitole0

Not reportedTaxon

Verbatim

e0
“fructose 6-phosphate → sorbitol phosphate → sorbitol”
✓ located verbatim in the source · abstract, characters 920–972

Title

Synthesis of Sorbitol in Apricot Leaves

RL Bieleski; RJ Redgwell Australian Journal of Plant Physiology 1977. doi:10.1071/pp9770001

Other claims from this paper (9)

Observation Carbon labeling was consistent with the normal C3 photosynthetic pathway.
Observation Fructose 6-phosphate labeled faster than glucose 6-phosphate.
Observation Fructose labeled faster than glucose.
Observation Sorbitol was the major photosynthetic end product.
Observation Sorbitol became the predominant labeled compound within 10 minutes.
Observation Sorbitol held over half the radioactivity after 30 minutes.
Mechanism Sorbitol may be synthesized through fructose or fructose 6-phosphate rather than glucose routes.
Observation Sorbitol phosphate represented 2% of total hexose monophosphate.
Observation Sorbitol phosphate labeled as fast as the hexose monophosphates.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Fructose decomposed faster during autoclaving than glucose or sucrose.

Taxon: CruciferaeBrassicaceaee1
Outcome: fructose decomposese0
Direction: more rapidlye0
Comparator: glucose or sucrosee0

Verbatim

e0
“Upon autoclaving fructose decomposes more rapidly than glucose or sucrose”
✓ located verbatim in the source · abstract, characters 332–405

e1
“fructose media sterilized by filtration are clearly beneficial for the growth of intact plants of Cruciferae”
✓ located verbatim in the source · abstract, characters 222–330

Title

‘Fructose Effect’ in Higher Plants*

RÉDEI G. P. Annals of Botany 1974. doi:10.1093/oxfordjournals.aob.a084812

Other claims from this paper (12)

Intervention effect Filter-sterilized fructose medium benefited growth of intact Cruciferae.
Mechanism Plants suffered on autoclaved fructose media because toxic degradation products accumulated.
Observation Early fructose breakdown products absorbing near 230 nm were apparently harmless.
Intervention effect Prolonged heating shifted the absorption maximum to around 285 nm.
Observation 5-hydroxymethyl-2-furaldehyde was toxic in the 10-4 M range.
Observation Hydroxyacetyl furan was toxic in the 10-4 M range.
Method / resource Thin layer chromatography separated at least ten decomposition-product hydrazones.
Intervention effect Cyclic adenosine monophosphate did not relieve toxicity of autoclaved fructose.
Association The adverse fructose-medium effect in crucifers was unrelated to sugar chelation.
Observation Medium acidification during autoclaving contributed only a minor effect.
Mechanism 5-hydroxymethyl-2- furaldehyde was identified as the primary cause of autoclaved fructose toxicity.
Mechanism Other decomposition products added to the toxicity of autoclaved fructose.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High fructose 1,6-bisphosphate concentrations inhibited enzyme activity.

Taxon: spinachSpinacia oleraceat0
Treatment: high concentrations of fructose 1,6-bisphosphatee0
Outcome: enzyme activitye0
Direction: inhibitede0

Not reportedComparator

Verbatim

t0
“spinach leaf cytoplasmic fructose-1,6-bisphosphatase”
✓ located verbatim in the source · title, characters 31–83

e0
“AMP and high concentrations of fructose 1,6-bisphosphate inhibited enzyme activity”
✓ located verbatim in the source · abstract, characters 387–469

Title

Purification and properties of spinach leaf cytoplasmic fructose-1,6-bisphosphatase.

G. Zimmermann; G.J. Kelly; E. Latzko Journal of Biological Chemistry 1978. doi:10.1016/s0021-9258(17)34561-1

Other claims from this paper (11)

Observation Cytoplasmic fructose-1,6-bisphosphatase was purified from spinach leaves to apparent homogeneity.
Observation The spinach enzyme is a tetramer of molecular weight about 130,000.
Observation At pH 7.5, Km for fructose 1.6-bisphosphate was 2.5 micron.
Observation At pH 7.5, Km for MgCl2 was 0.13 mM.
Observation The enzyme was specific for fructose 1,6-bisphosphate.
Observation Mg2+ saturation required lower concentrations at pH 8 than at pH 7.
Intervention effect AMP inhibited enzyme activity.
Intervention effect Ammonium sulfate relieved inhibition by high fructose 1,6-bisphosphate concentrations.
Intervention effect Ammonium sulfate inhibited activity when substrate concentrations were low.
Observation Acetylation studies indicated distinct AMP regulatory and catalytic sites.
Mechanism The enzyme may contribute to regulation of sucrose biosynthesis in leaves.

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“fructose”

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