The architecture of cellular RNA polymerases (RNAPs) dictates that transcription can begin only after promoter DNA bends into a deep channel and the start site nucleotide (+1) binds in the active site located on the channel floor. Formation of this transcriptionally competent "open" complex (RP(o)) by Escherichia coli RNAP at the lambdaP(R) promoter is greatly accelerated by DNA upstream of bas...

Alumina-supported manganese catalysts with cryptomelane and/or birnessite structure have been prepared using a simple method based on the thermal decomposition of potassium permanganate. The samples have been characterized by XRD, FTIR, TGA, DSC, N2 adsorption at −196 °C, SEM, H2-TPR and XPS, and their catalytic activity for soot combustion has been tested and compared to that of a reference Pt...

in this research, kiwifruits (hayward) were selected in two mass ranges (large and small). they were placed in one-liter glass bottles in the vicinity of the polyethylene sachets containing potassium permanganate nano-zeolite (0, 0.2, 0.4 and 0.8 g) and were stored in a germinator (5°c temperature and 30% relative humidity). then, the physicochemical properties of the fruits (soluble solid cont...

PURPOSE The removal of excessive melanin pigments that obscure ocular tissue morphology is important to address scientific questions and for differential diagnosis of ocular tumours based on histology. Thus, the goal of the present study was to establish an effective and fast melanin bleaching method for paraffin and frozen mouse and human ocular tissues. METHODS Paraffin-embedded and frozen ...

The aim of the present research is studying the effect of potassium permanganate addition on the pre-oxidation and coagulation of the surface water. River Nile and El Rayah El Tawfeky of Benha city, Egypt were the surface water supply used in this research. The results showed that El Rayah El Tawfeky raw water had higher turbidity concentration and humic acids absorbance (8.5 NTU and 0.024, res...

Potassium permanganate (KMnO4) is a dominant ethylene (C2H4)-scavenger extensively used in fresh horticultural commodities, mainly climacteric fruit, to prolong their shelf life. This material has been traditionally utilized as C2H4-permeable sachet for inclusion into packages of produces. New formulation strategies are required polymeric materials develop nanocomposites with scavenging potenti...

Land use change could significantly affect soil organic carbon (SOC) and other chemical properties. However, the responses of labile C fractions at different depths to land-use are not still clear. The aim this study was investigate effect paddy field conversion on woodlands or corn fields total (TOC) its including particulate (POC), microbial biomass (MBC), potassium permanganate-oxidizable (K...

Many chemicals used as medical treatments can cause chemical burns as an untoward side effect. One of such chemicals is potassium permanganate. It is a caustic chemical used as a disinfectant. The most common sites of burn by potassium permanganate are exposed sites like the face and hands. Chemical burns in the perianal and anal region are rare in clinical practice and even sparser in the pedi...

Introduction: Potassium Permanganate (KMnO4) is an uncommon cause of caustic ingestion in teenagers and adults; only case reports are found the recent literature. At Ngwelezana Hospital South Africa, KMnO4 not indication for admission. readily available as used most households recommended medicinal purposes by traditional health practitioners. Aim: To ascertain reasons ingestion, extent severit...