CONTENTS IX 



PAGE 



The Haem-Globin Linkage. 3. The Relationship between Molecular 

 Structure and Physiological Activity of Haemoglobins 



by J. E. O'Hagan 173 



Discussion 



Native globin . . . . . . . . .190 



The Linkage of Iron and Pi otein in Haemoglobin . . . .190 



Early Stages in the Metabolism of Iron 



by J. B. Neilands 194 



The Enzymic Incorporation of Iron into Protoporphyrin 



by R. A Neve 207 



Discussion 



The Formation of Metal-Porphyrin Complexes . . . . .211 



Co-ordination of Divalent Metal Ions with Porphyrin 



Derivatives Related to Cytochrome c 



by J. B. Neilands . .211 



Metal Incorporation in Model Systems . . . . , .214 



On the Enzymic Incorporation of Iron . . . . . .215 



Biosynthesis and Metabolism of Cytochrome c 



by D. L. Drabkin 216 



The Location of Cytochromes in Escherichia coli 



by A. TissiERES . , 218 



Discussion 



The Origin of the Respiratory Granules of Bacteria .... 223 



On the Cytochromes of Anaerobically Cultured Yeast 



by Paulette Chaix 225 



Discussion 



The Lactate Dehydrogenase of Yeast . . . . . .233 



Components of the Respiratory Chain in Yeast Mitochondria . .233 



On the '^ Haemoglobin' Afjsorption Bands of Yeast .... 233 



