A large amount of adenosine triphosphate is required in curdlan biosynthesis by Agrobacterium sp. ATCC 31749 for uridine triphosphate regeneration. Three low-polyphosphates (Na4P2O7, Na5P3O10 and (NaPO3)6) with high energy phosphate bond were employed in the present work to substitute for KH2PO4-K2HPO4 in medium for curdlan production. The curdlan yield was enhanced by 23% and 134% when one fol...

Nudix (nucleoside diphosphates linked to some moiety X) hydrolases act to hydrolyze ribo-and deoxyribo-nucleoside triphophates, nucleotide sugars, coenzymes, or dinucleoside polyphosphates. Arabidopsis thaliana contains 27 genes encoding Nudix hydrolase homologues (AtNUDX1-27) with a predicted distribution in the cytosol, mitochondria, and chloroplasts. Previously, cytosolic Nudix hydrolases He...

FLEISCH, HERBERT, AND WILLIAM F. NEUMAN. Mechanisms of calczjication: role of collagen, polyphosphates, and phosphatase. Am. J. Physiol. 200(6) : 1296-r 300. 1 g6 1 .-The nucleating properties of various collagens have been tested by determining quantitatively the minimum ion product, Ca times P, required to form calcium phosphate crystals. While most collagens require a product of 35 (mg%)2 or...

Phosphatidylinositol phosphates are involved in signal transduction, cytoskeletal organization, and membrane trafficking. Inositol polyphosphates, produced from phosphatidylinositol phosphates by the phospholipase C-dependent pathway, regulate chromatin remodeling. We used genome-wide expression analysis to further investigate the roles of Plc1p (phosphoinositide-specific phospholipase C in Sac...

A Raman microscopy method was developed and successfully applied to evaluate the dynamics of intracellular polyphosphate in polyphosphate-accumulating organisms (PAOs) in enhanced biological phosphorus removal (EBPR) processes. Distinctive Raman spectra of polyphosphates allowed for both identification of PAOs and quantification of intracellular polyphosphate during various metabolic phases in ...

Alkaline polyphosphate has been demonstrated to be able to reduce significant wear and friction of sliding interfaces under heavy loads (>1 GPa) and elevated temperature (800 °C and above) conditions, e.g. hot metal manufacturing. The chemical composition and fine structure of polyphosphate lubricating film is not well understood as well as the role of alkaline elements within the reaction film...