نتایج جستجو برای: catalase and peroxidase
تعداد نتایج: 16831293 فیلتر نتایج به سال:
Deterioration of seeds is an important factor to reduce seeds vigor and limit germination. The purpose of this research was to evaluate the influence of gibberellic acid hormone on recovery of seeds and improvement of quality and seedling growth in Varamin cotton seed, an experiment was conducted in a completely randomized way in three replications. Treatments included: two levels of deteriorat...
The 2.2 Å resolution structure of the catalase-peroxidase KatG from Synechococcus elongatus PCC7942.
The crystal structure of catalase-peroxidase from Synechococcus elongatus PCC7942 (SeKatG) was solved by molecular replacement and refined to an Rwork of 16.8% and an Rfree of 20.6% at 2.2 Å resolution. The asymmetric unit consisted of only one subunit of the catalase-peroxidase molecule, including a protoporphyrin IX haem moiety and two sodium ions. A typical KatG covalent adduct was formed, M...
In order to investigate physiological and biochemical changes of wheat under stress residue of Imazethapyr herbicide (Imazethapyr), an experiment was conducted in a completely randomized design with four replications in greenhouse conditions at university of Mohaghegh Ardebili. The treatments consisted of five dose levels of herbicide Imazethapyr (0, 0.011, 0.022, 0.033 and 0.044 micrograms of ...
The effects of double stress environment i.e. lead (heavy metal) and NaCl (saline) on the activity of antioxidant enzymes in Vigna radiata seedling were studied. The antioxidant activities of enzymes, i.e of superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase, glutathione reductase and their activity proportions were examined. Superoxide dismutase, ascorbate peroxidase, gu...
Chronic renal failure (CRF) is associated with oxidative stress, the precise mechanism of which is yet to be elucidated. The present study was undertaken to investigate in renal insufficiency the expression of catalase and glutathione peroxidase, which play a critical role in antioxidant defense system by catalyzing detoxification of hydrogen peroxide (H2O2) and organic hydroperoxides. Rats wer...
مطالعه تغییرات متابولیتهای سازگاری و فعالیت آنزیمهای آنتی اکسیدانت ارقام مختلف گندم تحت تنش رطوبتی
To study the effects of water stress on compatibility metabolites and the antioxidant enzyme activities of wheat variety trial a factorial experiment was conducted in a completely randomized design in 1393. The experiment consisted of three levels of stress (85, 60 and 35% of field capacity) and five varieties of wheat (Orom, Zarea, Mihan, ZSZOBKAYKA, JS3l7G217,) Analysis of variance showed, Pr...
Controversial data exist concerning the relation between the activities of scavenger antioxidant enzymes and coronary heart disease (CHD) risk. The authors report updated meta-analyses of studies assessing the activities of 3 antioxidant enzymes--glutathione peroxidase, superoxide dismutase, and catalase--and CHD risk. Computer-based and manual searches of the relevant literature from January 1...
Antioxidant enzymes play an important role in plant defense against pathogenic agents. Following the identification of the pathogen, plants produce active oxygen species (ROS) as one of their first defense responses. To maintain the balance of ROS levels and prevent their harmful effects, plants produce antioxidant peroxidase (POX), catalase (CAT), ascorbate peroxidase (APX) and superoxide dism...
Antioxidants act as free radical scavengers in the oxidation processes. Thus, they will certainly play diverse roles in the biological systems and the therapy of a wide variety of diseases. Regarding this fact, in the present study, we synthesized two new salen ligand compounds by the condensation of ethylendiamine and salicylaldehyde derivatives in excellent yields.The structures of ...
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