Flavin-dependent oxidoreductases are increasingly recognized as important biocatalysts for various industrial applications. In order to identify novel activities and to improve these enzymes in engineering approaches, suitable screening methods are necessary. We developed novel microtiter-plate-based assays for flavin-dependent oxidases and dehydrogenases using redox dyes as electron acceptors ...

Accumulation of γ -aminobutyric acid (GABA) is associated with stress factors in plant systems. The objective of the current study was to compare GABA concentration in wheat plants under chilling stress. After 48 h treatments of seedlings under chilling stress combined stresses with and without GABA, morphological and biochemical assays were conducted. It was observed that the inhibition of see...

Methylated and un-methylated control DNA is an important part of DNA methylation studies. Although human and mouse DNA methylation control sets are commercially available, in case of methylation studies on other species such as animals, plants, and bacteria, control sets need to be prepared. In this paper a simple method of generating methylated and un-methylated control DNA is described. Whole...

In traditional medicine, Jasonia glutinosa (L.) DC or rock tea (RT) has been mainly used to treat digestive and respiratory pathologies but also as an antimicrobial antidepressant herbal remedy. An ethanolic extract of RT demonstrated have antioxidant anti-inflammatory effects, which may be explained by its phytochemical profile, rich in polyphenols pigments. The aim this study is investigate t...

High-throughput screening to discover small-molecule modulators of enzymes typically relies on highly tailored substrate assays, which are not available for poorly characterized enzymes. Here we report a general, substrate-free method for identifying inhibitors of uncharacterized enzymes. The assay measures changes in the kinetics of covalent active-site labeling with broad-spectrum, fluorescen...

The Gag protein of HIV multimerizes to form viral particles. The GagPol protein encoding virus-specific enzymes, such as protease, reverse transcriptase, and integrase, is incorporated into HIV particles via interactions with Gag. The catalytically active forms of these enzymes are dimeric or tetrameric. We employed Förster resonance energy transfer (FRET) assays to evaluate Gag-Gag, Gag-GagPol...

methylated and un-methylated control dna is an important part of dna methylation studies. although human and mouse dna methylation control sets are commercially available, in case of methylation studies on other species such as animals, plants, and bacteria, control sets need to be prepared. in this paper a simple method of generating methylated and un-methylated control dna is described. whole...

Objective: To investigate the biochemical capacity, and in vitro inhibitory effects of hairy roots from two cultivars Ficus carica L. (Sabz Siah) on Leishmania major promastigotes amastigotes.Methods: In roots, activity antioxidant enzymes compared to normal leaves presence some phenolic compounds comparison with fruits were investigated. The IC50 values was determined by tetrazolium-dye 3-(4, ...