CONTENTS Xl^l 



Page 



Chap. 35, contd. 



2. Photoxidation of Chlorophyll 1499 



3 Reversible Photoxidation of Bacteriochlorophyll 1501 



4'. Reversible Photoreduction of Chlorophyll and Its Derivatives. 1501 



5. Chlorophyll-Sensitized Oxidation-Reductions 1507 



6. Chlorophyll-Sensitized Autoxidations 1525 



B Photochemistry of Chloroplast Preparations 1528 



1. Can Carbon Dioxide Serve as Oxidant in Hill Reaction? 1530 



2 Chloroplast Preparations from Different Plants • • • 153/ 



3. Preparation, Preservation and Activation of Chloroplast Ma- 



, 1 IOt:^ 



(a) Preparation of Chloroplast Suspensions 1542 



(b) Loss of Activity. Stabilization J543 



(c) Activation by Anions ^ 



(d) Fractionation of Chloroplast Material 1554 



4. Different Oxidants 



(a) Ferric Salts 



(b) Other Inorganic Oxidants J^^^ 



(c) Oxygen as Hill Oxidant J^°^ 



(d) Quinones ^^^2 



(e) Organic Dyestuffs ; • 



(f) Respiration Intermediates and Other Cellular Materials. . . 157b 



(g) Miscellaneous Organic Compounds J 589 



5. Kinetics __ 



Methods for Measuring Reduction i^»^ 



(b) Rate and Yield under Different Conditions 1592 



(c) Dark Reactions 



(d) Inhibition and Stimulation J^ 



(e) Survival of Photochemical Reductant in the Dark Ibl5 



, , . ... 1616 



6. Mutations 



C. Photochemistry of Live Cells 



„., ,. , lozo 



Bibliography 



Chap. 36. Chemical Path of Carbon Dioxide Reduction 1630 



1 AQn 



A. Isotopic Carbon Tracer Studies ■■■^■■- 



1 Photosynthetic and Respiratory Fixation of C O, lo-i" 



2. C*02 Fixation in Darkness with and without Preillumination. 

 A Surviving Reductant? _ 



3. C*02 Fixation in Light: Phosphoglyceric Acid as First Inter- ^^^^ 



mediate - „ , „ 



4 The Experiments of the Chicago Group -■ J^^o 



5 Early Intermediates Other than PGA; Paper Chromatography . 1655 

 6. The Role of Malic Acid: One or Two Carboxylations in Photo- ^^^^ 



synthesis? , ' '. .,^„^ 



7 The C5 and C7 Sugars as Intermediates in Photosynthesis ib/u 



^ Ti i. 1675 



8. The C2 Fragment ^^^^^ 



9. Kinetic Studies 



10. The Sequence of Sugars 



11. Effect of Poisons and pH on CO2 Fixation J^so 



12. Evolution of the CO2 Reduction Mechanism l^»« 



