Citrate transport in Bacillus subtilis is dependent on the presence of Mgz+. Other divalent cations like MnZ+, Co2+, or Ni2+ can replace magnesium ions. 2*Mg2+ or j4Mn2+ are taken up by the cells simultaneously with the uptake of citrate. Cells which are not induced for citrate transport do not show the citrate-dependent uptake of either 64Mn2+ or 2sMg2+. Citrate transport and the citrate-depen...

Citrate is a major component of bone in all vertebrates, but its implications in bone have remained largely unknown. Recent studies identified that citrate is incorporated into the structure of the hydroxyapatite nanocrystal/collagen complex; and is essential for the important biomechanical properties of bone. This raises the important question, "What is the source of citrate for incorporation ...

In Leuconostoc mesenteroides subsp. mesenteroides 19D, citrate is transported by a secondary citrate carrier (CitP). Previous studies of the kinetics and mechanism of CitP performed in membrane vesicles of L. mesenteroides showed that CitP catalyzes divalent citrate HCit2-/H+ symport, indicative of metabolic energy generation by citrate metabolism via a secondary mechanism (C. Marty-Teysset, J....

We carried out the study on NiTiO3 synthesized via citrate-gel method. Structural characteristics were determined by XRD and SEM. The impedance spectra analysis was used to elucidate dependence of complex values temperature frequency. correlation between DC-conductivity inverse presented it complied with semiconductor behavior Arrhenius type. real dielectric constant, loss AC-conductivity repor...

Polvos cerámicos de Sm2O3 dopados y mezclados con europio se obtuvieron a partir la formación cloruros samario través ruta sol-gel citrato. Este trabajo reporta influencia los iones en las propiedades estructurales luminiscentes cerámicas Sm2O3:Eu3+ (coordenadas CIE) variando el Eu3+ 10 50% mol. Las características químicas, morfológicas fueron establecidas por FTIR XRD, revelando presencia ban...

Citrate utilization plasmids have previously been identified in atypical Escherichia coli isolates. A different citrate-utilizing (Cit+) variant of E. coli K-12 arose as a consequence of two chromosomal mutations (B. G. Hall, J. Bacteriol. 151:269-273, 1982). The processes controlling the transport of citrate in both a Cit+ chromosomal mutant and a Cit+ plasmid system were studied. Both systems...

Cytosolic citrate is proposed to play a crucial role in substrate fuel selection in the heart. However, little is known about factors regulating the transfer of citrate from the mitochondria, where it is synthesized, to the cytosol. Further to our observation that rat hearts perfused under normoxia release citrate whose (13)C labeling pattern reflects that of mitochondrial citrate (B. Comte, G....

We evaluated the crystallization of calcium oxalate (CaOx) in undiluted urine, collected 3 hours after intake of a test meal by healthy males. In two experiments in vitro, either the total citrate concentration was increased (urine A) or the pH was elevated (urine B). In addition, in three clinical trials, the bioequivalence of orally taken potassium citrate (PC) and potassium-sodium citrate (P...