CONTENTS XI 



PAGE 



The Isolation, Purification and Properties of Haemin a 



by D. B. MoRELL, J. Barrett, P. Clezy and R. Lemberg . 320 



Discussion 



Model Systems for Cytochrome Oxidase ..... 330 



Absorption Spectra of Ferro- and Ferri-Compounds of Haem a 



by R. Lemberg ......... 330 



Cryptohaem a ........ . 333 



Mitochrome in Relation to Cryptohaem a .... . 334 



Cytochrome Oxidase Components 

 by M. Morrison and E. Stotz 335 



The Structure of Porphyrin a, Cryptoporphyrin a and Chlorin «2 



by R. Lemberg, P. Clezy and J. Barrett .... 344 



Discussion 



The Structure of Haem ?i and Haem a.2 . ..... 358 



The Structure of Porphyrin a 



by M. Morrison ......... 358 



The Properties of Haem o^ and Cytochrome a.^ 



by J. Barrett and R. J. P. Williams . . . , . .360 



Extractability of Ferro- and Ferricytochrome c . . . . .361 



A Haemopeptide from a Tryptic Hydrolysate of Rhodospirillum rubrum 

 Cytochrome c 



by S. Palpus and H. Tuppy 363 



Electrometric and other Studies on Cytochromes of the C-Group 



by R. W. Henderson and W. A. Rawlinson .... 370 



Discussion 



Protein Configuration and Linkage to the Prosthetic Group in Cytochrome c 382 



Studies of the Haemochrome-forming Groups in Cytochrome c 



by E. Margoliash 382 



The Amino Acid Sequence in Horse Heart Cytochrome c 



by E. Margoliash and R. Hill 383 



Comments on the Structure of Cytochrome c . . . . . 384 



Structure and General Properties of Cytochrome c . . . .385 



