Cellular redox, maintained by the glutathione (GSH)- and thioredoxin (Trx)-dependent systems, has been implicated in the regulation of a variety of biological processes. The redox state of the GSH system becomes oxidized when cells are induced to differentiate by chemical agents. The aim of this study was to determine the redox state of cellular GSH/glutathione disulfide (GSH/GSSG) and Trx as a...

graft copolymers of acrylamide on carboxymethyl cellulose (d.s 0.4-0.5) were prepared by the use of ceric ion, ceric ion/reductant molecule initiator systems in aqueous medium. the graft copolymers were characterized by ir spectroscopy. the extent of graft copolymerisation was measured in terms of grafted chains as a function of both ceric ion and ceric ion/reductant molecule concentrations. it...

The stomata in the abaxial epidermis of Vicia faba were examined for the location of redox systems using tetrazolium salts. Three distinct redox systems could be demonstrated: chloroplast, mitochondrial, and plasmalemma. The chloroplast activity required light and NADP. Mitochondrial activity required added NADH and was suppressed by preincubation with KCN. The plasmalemma redox system in guard...

Abstract Group transfer polymerization (GTP) is a method developed to obtain targeted (meth)acrylic polymers in solution at ambient temperatures. In this work, it employed with methacrylic monomers low Ð bulk. regard, different initiator systems that exhibit mechanisms are compared concerning the molecular weight, polydispersity and double bond conversion of resulting bulk polymers. The respect...

This study highlights the effects of the electrochemical surface pre-treatment of polished polycrystalline boron-doped diamond electrodes in ethanol on electron transfer to organic redox systems. A novel ‘‘activation’’ procedure based on cathodic polarisation in ethanol (0.01 M NBu4PF6) is proposed and shown to be highly effective in promoting electron transfer to the aqueous FeðCNÞ =4 6 redox ...

The cyclic voltammetry of both bulk manganese sulfate (BMS) and nano manganese sulfate (NMS) were studied using 0.1M KCl supporting electrolyte and glassy carbon working electrode. The redox behavior for both bulk (BMS) and MnSO4 (NMS) sulfate was studied voltammetrically in presence and absence of Doxorubicin (DR) using three electrodes system, silver- silver chloride (Ag/AgCl), pla...

In nonsulfur purple bacteria, redox homeostasis is achieved by the coordinate control of various oxidation-reduction balancing mechanisms during phototrophic anaerobic respiration. In this study, the ability of Rhodobacter capsulatus to maintain a balanced intracellular oxidation-reduction potential was considered; in addition, interrelationships between the control of known redox-balancing sys...

Rapid changes in redox potential (Eh) and pH occur in wetland environments. Due to frequent hydrologic fluctuations, wetland soils and sediments can have Eh values ranging from 700 mV (under drainage conditions) to −300 mV (under prolonged flooding conditions). Redox potential is probably the best available simple indicator of the oxidation– reduction status of a system, and it covers the entir...

Thiol-dependent redox regulation allows the rapid adaptation of chloroplast function to unpredictable changes in light intensity. Traditionally, it has been considered that chloroplast redox regulation relies on photosynthetically reduced ferredoxin (Fd), thioredoxins (Trxs), and an Fd-dependent Trx reductase (FTR), the Fd-FTR-Trxs system, which links redox regulation to light. More recently, a...