CONTENTS 



1. Isolation and Characterization of Bacterial Nucleoprotein Particles — ■ 

 William C. Gillchriest and Robert M. Boc/{ 1 



2. The Stabilization and Physical Characteristics of Purified Bacterial 

 Ribonucleoprotein Particles — Jac\ Wagman and Weston R. Trawic\ 11 



3. Stability of Ribonucleoprotein Particles of Escherichia coli — Ellis T. 

 Bolton, Bill H. Hoyer, and Daniel B. Ritter 18 



4. Biochemical Characterization and Electron-Microscopic Appearance 



of Microsome Fractions — David Garfin^el 22 



5. The Configurational Properties of Ribonucleic Acid Isolated from 

 Microsomal Particles of Calf Liver — Benjamin D. Hall and Paul Doty 27 



6. Microsomes and Ribonucleoprotein Particles [Invited paper] — George 



E. Palade . 36 



7. The Influence of Conditions of Culture on Certain Soluble Macro- 

 molecular Components of Escherichia coli — S. Dagley and J. Sy\es . 62 



8. Physicochemical and Metabolic Studies on Rat Liver Nucleoprotein — 

 Mary L. Peter mann, Mary G. Hamilton, M. Earl Balis, Kumud 

 Samarth, and Pauline Pecora 70 



9. Ultracentrifugal Studies of Microsomes from Starving, Nonproliferat- 

 ing, and Proliferating Yeast — James K. Ashi\awa 76 



10. Fractionation of Escherichia coli for Kinetic Studies — Richard B. 

 Roberts, Roy J. Britten, and Ellis T. Bolton 84 



11. Microsomal Structure and Hemoglobin Synthesis in the Rabbit Retic- 



ulocyte — Howard M. Dintzis, Henry Borsoo\, and Jerome Vinograd 95 



12. Effects of /7-Fluorophenylalanine on the Growth and Physiology of 

 Yeast — G. N. Cohen, H. O. Halvorson, and S. Spiegelman . . . 100 



13. Enzymatic and Nonenzymatic Synthesis in Adenyl Tryptophan — 

 Martin Karasel(, Paul Casteljranco, P. R. Krishnaswamy, and Alton 

 Meister 109 



14. Participation of Adenyl Amino Acids in Amino Acid Incorporation 

 into Proteins — Paul Casteljranco, Alton Meister, and Kivie Moldave 115 



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