Synergistic computational and experimental studies provided previously unforeseen details concerning the structural basis of S1P (sphingosine 1-phosphate) recognition by the S1P4 G-protein-coupled receptor. Similarly to reports on the S1P1 receptor, cationic and anionic residues in the third transmembrane domain (R3.28 and E3.29 at positions 124 and 125) form ion pairs with the phosphate and am...

The permeability properties of the inner membrane of mung bean mitochondria were studied by osmotic swelling techniques. Rapid mitochondrial swelling was observed in isotonic ammonium phosphate, which indicated that an active phosphate/hydroxyl antiporter was present. The phosphate carrier was specifically inhibited by sulfhydryl reagents. Mitochondria did not swell in isotonic ammonium salts o...

The main composition and availability of fly ash cause this waste which has potential as an adsorbent to remove ammonium phosphate in water. Difference will different removal efficiency. purposes from research are determine optimal condition for removing concentration the source great solution. conditions were carried out by varying pH solution dosages concentrations initial concentrations. Opt...

Phosphate-limited synthetic culture media were designed to investigate the growth and the pristinamycin production of 'Streptomyces pristinaespiralis' using different nitrogen sources. During balanced growth, either mineral or organic nitrogen sources were readily utilized. However, glutamate and alanine were used as both nitrogen and carbon source, sparing the utilization of the primary carbon...

Abstract In this study, the electrochemical mechanisms of struvite formation were investigated by studying behavior Mg‐based and (poly)crystalline‐Pt electrodes in presence ammonium dihydrogen phosphate, disodium chloride solutions. It was found that a precipitate formed on electrodes, while poly‐Pt electrode showed typical voltammetric features aqueous electrolytes. The structure, morphology, ...

Phosphate solublization activity of Bacillus subtilis in different carbon and nitrogen sources with insoluble form of phosphate sources like tricalcium phosphate and rock phosphate were studied. TCP solubilization with different carbon sources irrespective of incubation period can be related in the following order: glucose, fructose, arabinose, mannose, sucrose, lactose, and sorbitol. The pH dr...

An autonomous sensor for monitoring phosphate levels in aqueous samples has been developed. The sensor is based on the molybdenum yellow method for detection of phosphate, which involves the formation of a yellow-coloured compound when a phosphate-containing sample is mixed with an acidic reagent containing ammonium molybdate and ammonium metavanadate. The reaction is carried out in a microflui...

The ammonium and phosphate excretion and oxygen consumption of three species of echinoderms (Tripneustes gratilla, Protoreaster nodosus and Ophiorachna incrassata) commonly encountered in Philippine coral reefs were investigated in relation to time of day (i.e. daytime between 10:00 and 12:00 h vs. nighttime between 22:00 and 24:00 h) and their recent feeding history (i.e. recently-collected vs...