Microorganisms producing alkaline phosphatases are wide spread in nature. Alkaline phosphatase (Orthophosphoric monoester phosphohydrolase, E.C.3.1.3.1) is a hydrolase enzyme functioning at alkaline pH. The metalloenzyme containing the two zinc ions are involved in catalysis whereas the magnesium ion is important in structural stabilization (Simpson et al., 1968; Anderson et al., 1975). The enz...

Oxides (such as SiO₂, TiO₂, ZrO₂, Al₂O₃, Fe₂O₃, CeO₂) have often been used to prepare supported Pt catalysts for CO oxidation and other reactions, whereas metal phosphate-supported Pt catalysts for CO oxidation were rarely reported. Metal phosphates are a family of metal salts with high thermal stability and acid-base properties. Hydroxyapatite (Ca10(PO₄)₆(OH)₂, denoted as Ca-P-O here) also has...

An analytic study was conducted on coupled partial differential equations. We formally derived new solitary wave solutions of generalized coupled system of Zakharov-Kuznetsov (ZK) and KdV equations by using modified extended tanh method. The traveling wave solutions for each generalized coupled system of ZK and KdV equations are shown in form of periodic, dark, and bright solitary wave solution...

Graz University of Technology, Institute of Environmental Biotechnology, Petersgasse 12, A6 8010 Graz, Austria; Julius Kühn-Institut (JKI), Messeweg 11, D-38104 Braunschweig, 7 Germany, Kawanda Agricultural Research Institute, National Banana Research Program, 8 Uganda; Makerere University, Department of Agricultural Production, College of 9 Agricultural and Environmental Sciences, Uganda and B...

Heats of immersion of alkali and alkaline earth metaphosphates in some aromatic hydrocarbons were measured with a twin microcalorimeter to investigate the interaction of the interfaces between the phosphates and the hydrocarbons. The heats of immersion in benzene for the phosphates with long chains were lower than those for the phosphates with short chains. The dependence of heat of immersion o...

The accessibility of phosphates towards ethylnitrosourea was studied in tRNA/aminoacyl-.tRNA synthetase complexes and in the ternary aminoacyltRNA/EF-Tu/GTP complex. When the tRNA is complexed to aminoacyl-tRNA synthetases, several phosphates are protected against the alkylation agent, the protection patterns varying according to the tRNA/aminoacyl-tRNA synthetase system. However in all cases p...

The central role that phosphates play in biological systems, suggests they also played an important role in the emergence of life on Earth. In recent years, numerous important advances have been made towards understanding the influence that phosphates may have had on prebiotic chemistry, and here, we highlight two important aspects of prebiotic phosphate chemistry. Firstly, we discuss prebiotic...