| 11. | This enzyme participates in the metabolism of riboflavin, porphyrin and chlorophyll.
|
| 12. | Porphyrins are an additional class of conjugated, heterocyclic macrocycles.
|
| 13. | An example of catalysts of this type is Sander s porphyrin trimer.
|
| 14. | All samples to detect porphyrins must be handled properly.
|
| 15. | This behaviour is parallel with that observed for the corresponding metallo-porphyrins.
|
| 16. | Haematin inhibits the synthesis of porphyrin, and stimulates the synthesis of globin.
|
| 17. | These differences confer physical properties that are distinct from both porphyrins and phthalocyanines.
|
| 18. | Natural porphyrin molecules are shaped somewhat like doughnuts.
|
| 19. | Each iron atom is surrounded by a little ring of amino acids called porphyrin.
|
| 20. | Deficiency in the enzymes of the porphyrin pathway leads to insufficient production of heme.
|
