โ Scribed by Ahmad Reza Shahverdi; Rooholla Mirjani; Gholamreza Amin; Abbas Shafiee; Mehrdad Iranshahi
No coin nor oath required. For personal study only.
Recently, we reported that umbelliprenin inhibits the red pigment production in Serratia marcescens. In this current investigation the bleaching effect of the umbelliprenin was further studied using the spectrophotometric method, and its IC 50 was calculated. Also in this study the effect of the other coumarins extracted from Ferula persica roots were evaluated for depigmentation of Serratia marcescens. None of these compounds appeared to have a bleaching effect against a test strain at certain concentrations. Comparing the structures of the different coumarins showed that the linear sesquiterpene part of the umbelliprenin structure may be essential for the bleaching effect of S. marcescens.
๐ SIMILAR VOLUMES
In temperate phage kappa of Serratia marcescens several special features of different phages are combined. The unessential genes lI, iny, cII and, at least to some extent, even the integrase gene int are not subject to negative control by the repressor, the product of gene cIII. A genetic map of the