Sökning: "porphyrin metallation"
Hittade 5 avhandlingar innehållade orden porphyrin metallation.
1. Crystallographic studies on porphyrin metallation by ferrochelatase
Sammanfattning : Ferrochelatase catalyses the terminal step in heme biosynthesis by inserting a ferrous ion into protoporphyrin IX. The reaction mechanism has in this thesis been studied by mainly crystallographic methods. LÄS MER
2. Structural and physicochemical studies on metal and porphyrin binding by the Bacillus subtilis ferrochelatase
Sammanfattning : The enzyme ferrochelatase (EC 4.99.1.1) is the terminal enzyme in the biosynthetic pathway of heme b and catalyzes the insertion of Fe(II) into protoporphyrin IX. LÄS MER
3. Enzymatic metal-chelation by porphyrins
Sammanfattning : This thesis deals with the structure and function of two different enzymes, ferrochelatase and magnesium chelatase, that catalyse similar reactions. When this work started, a three-dimensional model of ferrochelatase existed. Much was known about the enzyme, but some details remained unclear. LÄS MER
4. Structure and mechanism of iron and magnesium chelatases - at the heme-chlorophyll branch-point
Sammanfattning : Tetrapyrroles are synthesised through a single branched biosynthetic pathway. Heme and chlorophyll are synthesised from the common intermediate protoporphyrin IX at the heme-chlorophyll branch-point. LÄS MER
5. Iron in Haem Biosynthesis. Structural Studies of Ferrochelatase and Frataxin
Sammanfattning : Ferrochelatase catalyses the synthesis of heme by inserting Fe(II) into protoporphyrin IX. The structure of ferrochelatase from yeast has been determined (2.4 Å). The structure is homodimeric with each of the monomer made up of two Rossmann type domains with an active-site cleft between them. LÄS MER