title: The crystallization of beef heart mitochondrial adenosine triphosphatase.
abstract: Conditions are described under which crystals are formed with the ATPase enzyme from beef heart mitochondria. Enzyme activity is retained during the crystallization process. Some unit cell parameters have been determined by electron microscopy of negatively stained crystals; comparison with the unit cell crystalline matris inclusions indicates that such inclusions could be ATPase crystals.
mesh_terms: D000251:Adenosine Triphosphatases / Q000302:isolation & purification*; D000818:Animals; D002417:Cattle; D003460:Crystallization; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle / Q000201:enzymology; D009206:Myocardium / Q000201:enzymology*
chemical_list: D000251:Adenosine Triphosphatases