title: Preparation of prostatic plasma membranes Distribution of (Na-+, K-+)-ATPase and Mg-2+-ATPase in the rat ventral prostate.
abstract: 1. A method is described for the isolation of a plasma membrane fraction from rat ventral prostate. This fraction is greatly enriched in (Na-", K-+)-ATPase but also contains a small amount of Mg-2+-ATPase and 5'-nucleotidase activities. 2. The activity ratio (Mg-2+ plus Na-+ plus K-+/Mg-2+ or Mg-+ plus Na-+) of the plasma membrane (Na-+, K-+)-ATPase was 1.7. The enzyme system specifically requires ATP as substrate and is inhibited by Ca-2+ or ouabain.
mesh_terms: D000251:Adenosine Triphosphatases / Q000302:isolation & purification / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000494:pharmacology; D002462:Cell Membrane / Q000187:drug effects / Q000201:enzymology*; D002642:Chick Embryo; D004789:Enzyme Activation / Q000187:drug effects; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology*; D008297:Male; D009708:Nucleotidases / Q000378:metabolism; D010042:Ouabain / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology*; D011467:Prostate / Q000187:drug effects / Q000201:enzymology*; D051381:Rats; D012964:Sodium / Q000494:pharmacology*; D013347:Subcellular Fractions / Q000201:enzymology
chemical_list: D010042:Ouabain; D012964:Sodium; D009708:Nucleotidases; D000251:Adenosine Triphosphatases; D008274:Magnesium; D011188:Potassium; D002118:Calcium