Insights into ascorbate regeneration in plants: investigating the redox and structural properties of dehydroascorbate reductases from Populus trichocarpa

2016 ◽  
Vol 473 (6) ◽  
pp. 717-731 ◽  
Author(s):  
Pierre-Alexandre Lallement ◽  
Thomas Roret ◽  
Pascale Tsan ◽  
José M. Gualberto ◽  
Jean-Michel Girardet ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Structural Properties ◽  
Populus Trichocarpa ◽  
Nmr Structure ◽  
Dehydroascorbate Reductase ◽  
Cysteine Residues ◽  
Redox States ◽  
Mediated Oxidation ◽  
Ascorbate Regeneration ◽  
Dehydroascorbate Reduction

The resolution of a NMR structure of a poplar dehydroascorbate reductase (DHAR) coupled to kinetic analysis and GSSG-mediated oxidation treatments revealed that DHARs are highly specialized for dehydroascorbate reduction and adopt different redox states depending on the number of cysteine residues.

scholarly journals Synthesis of γ-substituted carbonyl compounds from DMSO-mediated oxidation of enynamides: mechanistic insights and carbon- and hetero-functionalizations

2019 ◽  
Vol 10 (38) ◽  
pp. 8799-8805 ◽  
Author(s):  
Quynh H. Nguyen ◽  
Nguyen H. Nguyen ◽  
Hanbyul Kim ◽  
Seunghoon Shin
Keyword(s):  
Kinetic Analysis ◽  
Carbonyl Compounds ◽  
Mediated Oxidation

1,3-Enynamides underwent oxygenative coupling with carbon- and heteroatom nucleophiles with high remote selectivity. Kinetic analysis revealed a continuum mechanism between concerted SN2′′ and via a carbocation, depending on the nucleophiles used.

scholarly journals Enhanced Ascorbate Regeneration Via Dehydroascorbate Reductase Confers Tolerance to Photo-Oxidative Stress inChlamydomonas reinhardtii

2016 ◽  
Vol 57 (10) ◽  
pp. 2104-2121 ◽  
Author(s):  
Shu-Tseng Lin ◽  
Chih-Wen Chiou ◽  
Yen-Lin Chu ◽  
Yu Hsiao ◽  
Yu-Fei Tseng ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dehydroascorbate Reductase ◽  
Ascorbate Regeneration

Newborn's Preference for Faces

1996 ◽  
Vol 1 (3) ◽  
pp. 200-205 ◽  
Author(s):  
Carlo Umiltà ◽  
Francesca Simion ◽  
Eloisa Valenza
Keyword(s):  
Visual System ◽  
Structural Properties ◽  
Sensory Properties ◽  
Human Face ◽  
System Experiment ◽  
Face Experiment

Four experiments were aimed at elucidating some aspects of the preference for facelike patterns in newborns. Experiment 1 showed a preference for a stimulus whose components were located in the correct arrangement for a human face. Experiment 2 showed a preference for stimuli that had optimal sensory properties for the newborn visual system. Experiment 3 showed that babies directed their attention to a facelike pattern even when it was presented simultaneously with a non-facelike stimulus with optimal sensory properties. Experiment 4 showed the preference for facelike patterns in the temporal hemifield but not in the nasal hemifield. It was concluded that newborns' preference for facelike patterns reflects the activity of a subcortical system which is sensitive to the structural properties of the stimulus.

Betaines and free amino acids in salt stressed vitroplants and winter resting buds of Populus trichocarpa x deltoides

1991 ◽  
Vol 83 (1) ◽  
pp. 136-143 ◽  
Author(s):  
L. Bray ◽  
D. Chriqui ◽  
K. Gloux ◽  
D. Le Rudulier ◽  
M. Meyer ◽  
...  
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Populus Trichocarpa
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