The plant oncogene rolD stimulates the reproductive phase transition in plants. We define here the function of its gene product. We show that the RolD protein bears sequence homology with ornithine cyclodeaminase, an uncommon enzyme of specialized-niche eubacteria and archaea that catalyzes the unusual NAD(+)-dependent conversion of ornithine to proline. To confirm the prediction of the bioinfo...

Human manganese superoxide dismutase (MnSOD) is characterized by a product inhibition stronger than that observed in bacterial forms of MnSOD. Previous studies show that the conserved, active-site residue Tyr34 mediates product inhibition; however, the protein environment of Tyr34 is different in human and Escherichia coli MnSOD. We have prepared two site-specific mutants of human MnSOD with re...

We investigate the protein expression pattern of the lamB gene in Escherichia coli LE392. The gene product LamB is an important membrane protein for maltose transport into cells but it is also exploited by bacteriophage λ for infection. Although our bacterial population is clonal, stochastic gene expression leads to a majority population with a large receptor number and a minority population wi...

Odoriferous terpene metabolites of bacterial origin have been known for many years. In genome-sequenced Streptomycetaceae microorganisms, the vast majority produces the degraded sesquiterpene alcohol geosmin. Two minor groups of bacteria do not produce geosmin, with one of these groups instead producing other sesquiterpene alcohols, whereas members of the remaining group do not produce any dete...

The yeast plasma membrane ATPase gene PMA1 was cloned into Escherichia coli using the high expression tac and T7 promoters. The gene product is toxic to the bacterial cell leading to very low expression levels and arrested growth of the host cell within minutes of induction. The expressed protein is immunologically cross-reactive with the yeast ATPase, comigrates with the original protein in so...

The objective of current study was to investigate the effects of whey protein coating on the quality of common kilka during frozen storage period. For this study, common kilka was coated with 12% whey protein concentration. Also, non- coated kilka was used as a control sample. Coated and non-coated samples were then stored at -18 oC for six months. Bacterial, chemical and sensory properties of ...

The objective of current study was to investigate the effects of whey protein coating on the quality of common kilka during frozen storage period. For this study, common kilka was coated with 12% whey protein concentration. Also, non- coated kilka was used as a control sample. Coated and non-coated samples were then stored at -18 oC for six months. Bacterial, chemical and sensory properties of ...

Background: Xanthomonas citri subsp. citri (Xcc), the causative agent of bacterial citrus canker, has affected citriculture worldwide. Varieties of means have been used to minimize its devastating effects, but no attention has been given to bacteriocins. Objectives: Here and for the first time, we report the isolation and characterization of two novel bacteriocins. Materials and Methods: Secret...

protease 2a (2apro) of coxsackievirus b3 (cvb3) plays a major role in viral replication. in case of infection, viral proteins are being synthesized from viral mrna using host biosynthesis machinery. 2apro of virus, after being synthesized, exhibits two critical functions, cleavage of viral proteins and breaking eukaryotic initiation factor 4g. the enzyme plays an essential role in viral replica...