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| Description: a. The covalent bond formed between heme and the protein component in cytochromes c and c1. The vinyl groups on heme are linked to the thiol groups of two cysteine residues (red). b. Heme A, the form found in cytochromes a and a3. Note the modified side chains—a formyl group (red) and an isoprenoid side chain (blue). c. Four-helix bundle structure of cytochrome b562 from E. coli Picture Stats: Views: 230 Filesize: 394.83kB Height: 610 Width: 713 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=34570 |