Labile phosphate esters such as phosphocreatine, acetyl phosphate, and ribose-l-phosphate (1) have assumed great biological importance. These esters are so unstable that they are split with great rapidity by the reagents commonly used for inorganic phosphate determination. Therefore, the usual inorganic phosphate measurements in tissue extracts, etc., actually represent the sum of the inorganic...

In a previous communication from this laboratory (1) a reaction of inorganic phosphate with water was described which occurred during phosphorylation coupled to oxidation in the electron transport system in liver mitochondria. This reaction was followed by observing the replacement of 018 in labeled inorganic phosphate by normal oxygen from water concomitant with the occurrence of phosphorylati...

Heritable ectopic mineralization disorders represent a phenotypically diverse group of conditions characterized by deposition of calcium phosphate complexes in soft connective tissues. The prototype of such conditions is pseudoxanthoma elasticum, and related conditions with overlapping clinical features include generalized arterial calcification of infancy and arterial calcification due to CD73...

information about forms of phosphorus (p) is important for the evaluation of p status in soil and also understanding of the soil fertility and plant nutrition. to obtain such information and to determine the relationship between the p forms from soil characteristics, amount of different organic and inorganic p forms of 20 soil composite samples of eastern azerbaijan province, iran were determin...

Native sodium and potassium adenosine triphosphatase from guinea pig kidney accepted a phosphate group from radioactive inorganic phosphate to form an acyl phosphate bond at the active site in the presence or absence of sodium ion. Magnesium ion was always required. In the presence of sodium ion and absence of adenosine triphosphate, there was no phosphorylation by inorganic phosphate. Addition...

Native sodium and potassium adenosine triphosphatase from guinea pig kidney accepted a phosphate group from radioactive inorganic phosphate to form an acyl phosphate bond at the active site in the presence or absence of sodium ion. Magnesium ion was always required. In the presence of sodium ion and absence of adenosine triphosphate, there was no phosphorylation by inorganic phosphate. Addition...

the role of parathyroid hormone on stature in major beta-thalassemic patients   gr. moshtaghi kashanian phd 1 , a. ahmadi md2, mm. hayat bakhsh md3   1- assistant professor, dept. of biochemistry, faculty of medicine, university of medical sciences, kerman, iran   2- professor of pediaterics, university of medical sciences, kerman, iran   3- assistant professor of internal medicine, faculty of ...

“Phosphotransferase” activity, which has been previously described (l), involves the enzymic transfer of phosphate from various aryl phosphates to particular hydroxyl compounds, apparently without the mediation of a nucleotide. It was indicated in this work that the phosphate group was transferred directly from the donor to the acceptor compound. The main basis for this belief was the observati...