The oceanic dissolved organic phosphorus (DOP) pool is mainly composed of P-esters and, to a lesser extent, equally abundant phosphonate and P-anhydride molecules. In phosphate-limited ocean regions, diazotrophs are thought rely on DOP compounds as an alternative source (P). While both phosphonates effectively promote dinitrogen (N 2 ) fixation, the role P-anhydrides for unknown. Here we explor...

A primary technology barrier preventing the operation of gas turbine engines and aircraft gearboxes at higher temperatures is the inability of currently used liquid lubricants to survive at the desired operating conditions over an extended time period. Current state-of-the-art organic liquid lubricants rapidly degrade at temperatures above 300 °C; hence, another form of lubrication is necessary...

The formation of glucose-l-phosphoric acid (l-ester) and its conversion to glucose-6-phosphoric acid have been shown to be initial steps in the degradation of glycogen to lactic acid (1). The enzyme which brings about the conversion of the l-ester has been found in extracts of rabbit muscle, brain, heart, liver, in dog and frog muscle extracts, and in extracts of yeast (2); it is presumably pre...

A two-component condensation reaction between an electron-poor acetylenic ester and a phenol e ciently provides substituted aryl vinyl ethers in a one-pot reaction in the presence of dipotassium hydrogen phosphate in solvent-free conditions.

Introducing ligand based hydrogen bond donors to increase the activity of a mononuclear Zn(II) complex for catalysing phosphate ester cleavage can be a more effective strategy than making the dinuclear analogue.

In previous studies on the utilization of maltose and glucose by lfeisseria meningitidis (meningococcus) it has been found that the disaccharide is utilized more rapidly than glucose (1, 2). Phosphate esterification was observed with growing cultures, washed cells, and cell-free extracts of this organism in the presence of maltose but not of glucose (3). The properties of the phosphate ester ap...

The advantageous chemical properties of the phosphate ester linkage were exploited early in evolution to generate the phosphate diester linkages that join neighbouring bases in RNA and DNA (Westheimer 1987 Science 235, 1173-1178). Following the fixation of the genetic code, another use for phosphate ester modification was found, namely reversible phosphorylation of the three hydroxyamino acids,...

In this study erythrocyte phosphate release depended on the intracellular hydrolysis of organic phosphate esters. Total phosphate release was increased in essential hypertension, which suggests an elevated phosphate ester metabolism. Ouabain-sensitive phosphate release was decreased, and the ratio of intracellular Na+/K+ concentrations was increased, a finding consistent with a diminished Na-K-...

In previous studies on the utilization of maltose and glucose by lfeisseria meningitidis (meningococcus) it has been found that the disaccharide is utilized more rapidly than glucose (1, 2). Phosphate esterification was observed with growing cultures, washed cells, and cell-free extracts of this organism in the presence of maltose but not of glucose (3). The properties of the phosphate ester ap...