In models of Escherichia coli recombination and DNA repair, the RuvABC complex directs the branch migration and resolution of Holliday junction DNA. To probe the validity of the E. coli paradigm, we examined the impact of mutations in DeltaruvAB and DeltarecU (a ruvC functional analog) on DNA repair. Under standard transformation conditions we failed to construct DeltaruvAB DeltarecG, DeltarecU...

BACKGROUND Mindium laevigatum (Vent.) Rech. F. plant grows in central part of Iran. And used by local people as medical plant. OBJECTIVES The purpose of this study was to investigate the in vitro antibacterial, antifungal and antioxidant activities of the methanolic extracts of aerial and flower parts of plant. MATERIALS AND METHODS The leaves and stem and flower of bark from M. laevigatum ...

in the present study, an oxidative conversion of non-fluorescent dichlorofluoroscein (ldcf) to fluorescent dichlorofluoroscein (dcf) was used for detection of antioxidant properties of plant extracts. the rate of the reaction was followed by monitoring the formation of dcf as a function of time. the antioxidant assay was carried out for different concentrations of gallic acid, salvia mirzayanii...

Investigating genetic diversity in plant species provides a platform for further insight in plant breeding and conservation. Therefore, in the present study genetic diversity of 13 geographically isolated genotypes of Zhumeria majdea, as a seriously endangered medicine plant growing exclusively in Hormozgan province (South of Iran) was studied. To do so, the leaf samples of Z. majdea were colle...

the cytotoxic chloroform fraction of euphorbia aellenii afforded two cycloartane type triterpenes — cycloart-25-en-3,24-diol (1) and 24-methylene-cycloartan-3-ol (2) — for the first time from this plant. preparation of cycloartane derivatives, 3, 24-o-diacetyl-cycloart-25-en as compound 3 and 3-o-acetyl-24-methylene-cycloartan (4) were conducted by acetylating of 1 and 2, respectively. the ...

Studie se zabĂ˝vĂĄ dosud opomĂ­jenou počátečnĂ­ fĂĄzĂ­ politickĂŠ kariĂŠry přednĂ­ho komunistickĂŠho funkcionáře MiloĹĄe JakeĹĄe (1922–2020), kterĂ˝ později po porĂĄĹžce praĹžskĂŠho jara stal členem novĂŠho, normalizačnĂ­ho vedenĂ­ KomunistickĂŠ strany Československa a v letech 1987 aĹž 1989 stanul jejĂ­m čele jako generĂĄlnĂ­ tajemnĂ­k. Tato etapa je spjata s jeho pĹŻsobenĂ­m...

The hawthorn fruits have been used as food and medicine for centuries. In the present study, pulp and seed extract of Crataegus elbursensis Rech. F. fruits belonging to the family Rosaceae and native of northern part of Iran were evaluated for the polyphenol contents, antiradical, antioxidant, and antibacterial activities. The total phenolic, flavonoid, and anthocyanin contents of methanolic pu...

The aerial parts of Stachys laxa Boiss. and Buhse. from Siah-bishe in Mazandaran province, Stachys trinervis Aitch. and Hemsl. from Karaj in Alborz province, Stachys subaphylla Rech. F. and Stachys turcomanica Trautv. from Golestan province have been collected in May 2008. Total extracts were obtained through MeOH/H2O (80/20) and then partitioned between CHCl3, EtOAc and MeOH. These fractions a...