Contents ix 



PAGE 



Short Communication : 



Recent observations on the mechanism of glycogen syn- 

 thesis in muscle 



by P. W. RoBBiNS and F. Lipmann . . . .188 



Alternative pathways of electron transport 



by C. Martius ........ 194 



Discussion: Chance, Estabrook, King, Krebs, Lehninger, 

 Lipmann, Magasanik, IVIartius, Potter, Siekevitz, 

 Slater 200 



Limiting factors in glycolysis of ascites tumour cells and 

 the Pasteur effect 



by E. Hacker and R. Wu 205 



Discussion : Bartley, Chance, Greville, Hess, Lehninger, 

 LiPxMann, Lynen, McIlwain, Racker, Siekevitz . 219 



Role of triphosphopyridine nucleotide in the regulation of 

 glycolysis in a cell -free preparation 



by V. R. Potter and H. Niemeyer .... 230 



Discussion : Greville, Krebs, Lehninger, Lipmann, Lynen, 



Magasanik, McIlwain, Potter, Racker, Slater . . 253 



Phosphate turnover and Pasteur effect 



by F. Lynen, G. Hartmann, K. F. Netter and A. 

 Schuegraf ........ 256 



Discussion: Coxon, Hess, Holton, Holzer, Lynen, Potter 273 



Enzymic regulation of fermentation in yeast cells 



by H. HoLZER 277 



Discussion: Chance, Coxon, Hess, Hinshelwood, Holzer, 



King, Krebs, Lynen, Magasanik, Racker, Slater . 287 



Mechanisms for control of enzyme synthesis and enzyme 

 activity in bacteria 



by A. B. Pardee 295 



Discussion: Krebs, Lehninger, Lipmann, Magasanik, 



Pardee, Potter, Racker . . . . . . 304 



Automatic adjustment mechanisms in bacterial cells 



by A. C. R. Dean and Sir Cyril Hinshelwood . . 311 



Discussion : Chance, Dean, Gutfreund, Hess, Hinshelwood, 

 King, Krebs, Lehninger, Lipmann, Magasanik, Potter, 

 Racker, Siekevitz ....... 329 



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