in this study the effects of fe2o3 and fe3o4 magnetic nanoparticles and edta on urease activity was investigated. the effect of nano-fe2o3 and nano-fe3o4 on urease activity were investigated. urease activity was studies by uv-vis spectrophotometry at 40 °c at ph = 7.2 using sodium phosphate as buffer. measurements were carried out using 0.075 mg/ml of urease and a range of nano-fe2o3 and nano-f...

background: parkinson's disease is one of the prevalent degenerative diseases of the neural system. oxidative stress, which has been recognized as the most important factor of parkinson's disease, plays a main role in the death of neurons in this disease. antioxidants have a proved role in the prevention of oxidative stress. objective: considering the presence of evidence regarding antioxidant ...

Several reagents have been employed to determine the role of the thiol groups in fumarase. The nature of the reaction of these reagents indicates that the thiol groups are not associated with active site structures but are buried in a hydrophobic environment in the interior of the enzyme. Several observations are in accord with this view. The rate of reaction of the thiol groups is much slower ...

In this study the effects of Fe2O3 and Fe3O4 magnetic nanoparticles and EDTA on urease activity was investigated. The effect of nano-Fe2O3 and nano-Fe3O4 on urease activity were investigated. Urease activity was studies by UV-Vis spectrophotometry at 40 °C at pH = 7.2 using sodium phosphate as buffer. Measurements were carried out using 0.075 mg/ml of urease and a range of nano-Fe2O3 and nano-F...