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http://scihub22266oqcxt.onion/ 2982870!ä!2982870 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 276.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       J+Biol+Chem 1985 ; 260 (6): 3635-9 Nephropedia Template TP {{tp|p=2982870|t=1985. Enhancement by Ca2+ or Mg2+ of catalytic activity of the superoxide-producing NADPH oxidase in membrane fractions of human neutrophils and monocytes |pdf=|usr=}}{{2982870}} gab.com Text Enhancement by Ca2+ or Mg2+ of catalytic activity of the superoxide-producing NADPH oxidase in membrane fractions of human neutrophils and monocytes JO: J Biol Chem http://www.kidney.de/pget.php?&tw=1&pmid=2982870 #FOAvip To examine the role of divalent cations in the generation of superoxide anion (O2-) by the NADPH oxidase system of phagocytic cells, membrane-rich fractions were prepared from human neutrophils and monocytes. O2- generation by the fractions in sucrose was enhanced by addition of Ca2+ or Mg2+. EDTA inhibited most of the O2- generation; Ca2+ or Mg2+ reversed the inhibition. Zn2+, Mn2+, or Cu2+ completely inhibited O2- production. Neutrophil membrane fraction solubilized with Triton X-100, then passed through a chelating column, lost 80% of its oxidase activity; the loss could be reversed by addition of Ca2+ or Mg2+. Addition of 0.3 mM Ca2+ or Mg2+ protected against thermal instability of the enzyme. Kinetic analysis of the neutrophil oxidase activity as a function of NADPH and Ca2+ or Mg2+ concentrations showed that cation did not interact with NADPH in solution or affect the binding of NADPH to the oxidase; rather, cation bound directly to the oxidase, or to some associated regulatory component, to activate the enzyme. For the neutrophil oxidase, the Km for NADPH was 51 +/- 6 (S.D.) microM. Hyperbolic saturation was observed with Ca2+ and Mg2+, and the Kd values were 1.9 +/- 0.3 and 2.9 +/- 0.3 microM, respectively, suggesting that the oxidase, or some associated component, has a relatively high-affinity binding site for Ca2+ and Mg2+. Twit Text FOAVip Enhancement by Ca2+ or Mg2+ of catalytic activity of the superoxide-producing NADPH oxidase in membrane fractions of human neutrophils and monocytes ????J Biol Chem http://www.kidney.de/pget.php?&tw=1&pmid=2982870 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=2982870 #FOAvip English Wikipedia <ref>{{Cite pmid|2982870}}</ref> Enhancement by Ca2+ or Mg2+ of catalytic activity of the superoxide-producing NADPH oxidase in membrane fractions of human neutrophils and monocytes #MMPMID2982870 Suzuki H; Pabst MJ; Johnston RB Jr J Biol Chem 1985[Mar]; 260 (6): 3635-9 PMID2982870show ga To examine the role of divalent cations in the generation of superoxide anion (O2-) by the NADPH oxidase system of phagocytic cells, membrane-rich fractions were prepared from human neutrophils and monocytes. O2- generation by the fractions in sucrose was enhanced by addition of Ca2+ or Mg2+. EDTA inhibited most of the O2- generation; Ca2+ or Mg2+ reversed the inhibition. Zn2+, Mn2+, or Cu2+ completely inhibited O2- production. Neutrophil membrane fraction solubilized with Triton X-100, then passed through a chelating column, lost 80% of its oxidase activity; the loss could be reversed by addition of Ca2+ or Mg2+. Addition of 0.3 mM Ca2+ or Mg2+ protected against thermal instability of the enzyme. Kinetic analysis of the neutrophil oxidase activity as a function of NADPH and Ca2+ or Mg2+ concentrations showed that cation did not interact with NADPH in solution or affect the binding of NADPH to the oxidase; rather, cation bound directly to the oxidase, or to some associated regulatory component, to activate the enzyme. For the neutrophil oxidase, the Km for NADPH was 51 +/- 6 (S.D.) microM. Hyperbolic saturation was observed with Ca2+ and Mg2+, and the Kd values were 1.9 +/- 0.3 and 2.9 +/- 0.3 microM, respectively, suggesting that the oxidase, or some associated component, has a relatively high-affinity binding site for Ca2+ and Mg2+. |Calcium/*metabolism[MESH] |Cell Membrane/enzymology[MESH] |Chelating Agents[MESH] |Humans[MESH] |Kinetics[MESH] |Magnesium/*metabolism[MESH] |Monocytes/*enzymology[MESH] |NADH, NADPH Oxidoreductases/*metabolism[MESH] |NADPH Oxidases[MESH] |Neutrophils/*enzymology[MESH] |Resins, Synthetic[MESH]Enhancement by Ca2+ or Mg2+ of catalytic activity of the superoxide-pr(epmc).pdf DeepDyve Pubget Overpricing