Comparative Physiology of Pleuropneumonia-like and L-type Organisms.

INTRODUCTION............................ 97 CHEMICAL COMPOSITION............................ 98 Composition of Intact Organisms ............................ 98 Protein composition........................................................................ 98 Nucleic acid composition.................................................................... 98 Carbohydrate composition................................................................... 99 Lipid composition............................ 100 Elemental composition...................................................................... 103 Composition of Cell Envelopes............................ 103 General composition........................................................................ 103 Structure of cell envelopes................................................................... 104 NUTRITION............................ 105 Chemical Requirements for Growth............................ 106 Protein requirements........................................................................ 106 Amino acid requirements.................................................................... 107 Nucleic acid requirements................................................................... 107 Carbohydrate requirements.................................................................. 108 Lipid requirements............................ 108 Vitamin requirements....................................................................... 110 Inorganic requirements ............................... 110 Physical Requirements for Growth............................ 111 Temperature..1..........................11 Effects of pH..........................111 Osmotic effects .............................................................................. 111 Gaseous Requirements for Growth............................ 112 ENZYMATIC ACTIVITIES............................ 112 Energy-Yielding Metabolism ............................ 112 Carbohydrate-utilizing organisms............................................................ 112 Nonfermentative organisms............................ 115 Nitrogen Metabolism............................ 115 Lipid Metabolism............................ 116 Biosynthesis................................................................................. 117 Enzymatic Activity Related to Pathogenesis ................................... 118 CONCLUSIONS.................................................................................. 119 LITERATURE CITED..................................................... 119