2-Carboxy-3-keto- 1 ,5-diphos- 



phoribitol, 1 1 

 Carboxydismutase, 23, 51 

 Carboxyl carbon of PGA, 39 

 Carboxylating enzyme, 51 

 Carboxylation reactions 

 of 8-aminobutyric acid, 34 

 balance among, 26 

 evidence for RuDP as react- 

 ant and PGA as product, 

 20 

 keto acid, product of, 8 

 leading to C4 compounds, 22 

 number of times per cycle, 9 

 of phosphoenolpyruvic acid, 



22 

 other carboxylations than 



cyclic, 21 

 PGA, first stable product of, 



15 

 quantitative importance of, 



22 

 reductive, 1 1, 23 

 Carboxylic acids 



formation of, 37, 38, 39 

 Carotenoids, 60 

 Chlorella pyrenoidosa, 12, 25, 



30 

 Chlorophylls, 60, 64 

 Chloroplasts 



amino acid pools in, 30 

 as biosynthetic factory, 68 

 compounds excreted by, 28 

 site of synthetic reactions, 27 

 transport of reducing power 

 from, 40 

 Citramalate, 35 

 Citric acid, 48 

 Citrulline, 31 



Degradation 



of glycolic acid, 39 



of hexoses, 16 



of PGA, 15,39 

 Dihydroxyacetone phosphate 



early product of CO2 reduc- 

 tion, 49 



glycerol phosphate forma- 

 tion from, 59 



intermediate in carbon re- 

 duction cycle, 1 1 



reactions of, 51 



Epimerase, 9 



Erythrose-4-phosphate, 11,49, 

 51,65 



Farnesyl pyrophosphate, 61 



Fatty acids, 25, 56 



Fatty acid synthesis, 38 



Fats, 56, 67 



Free energy change 



carboxylation reaction, 38 



formation of ATP, 4 



formation of TPNH, 4 



relation to reversibility, 38 

 Fructose- 1 ,6-diphosphate 



in carbon reduction cycle, 11, 

 49 



reactions of, 51 

 Fructose-1-phosphate, 55 

 Fructose-6-phosphate 



in carbon reduction cycle, 1 1, 

 49 



reactions of, 51, 53, 55 



124 



