Search for dissertations about: "magnesium chelatase"
Showing result 1 - 5 of 7 swedish dissertations containing the words magnesium chelatase.
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1. Magnesium Chelatase - a Key Enzyme in Chlorophyll Biosynthesis
Abstract : The biosynthesis of chlorophylls is an important process in nature. The green pigments play a fundamental role in absorbing and transferring solar energy to the photosynthetic apparatus. READ MORE
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2. Magnesium Chelatase: Insights into the first Step of Chlorophyll Biosynthesis
Abstract : The enzyme magnesium chelatase inserts magnesium into protoporphyrin IX (Proto) to produce to magnesium protoporphyrin IX, the first unique intermediate of the chlorophyll biosynthetic pathway. Magnesium chelatase is composed of three distinct proteins termed I (molecular weight ~40 kDa), D (~70 kDa) and H (~140 kDa). READ MORE
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3. Insights into structure and dynamics of the AAA+ motor of magnesium chelatase
Abstract : The insertion of Mg2+ into protoporphyrin IX represents the first committed step in the chlorophyll and bacteriochlorophyll biosynthetic pathways. The reaction is catalyzed by the multisubunit enzyme Mg-chelatase, which consists of three subunits, known as I (molecular weight ~40 kDa), D (~70 kDa), and H (~140 kDa). READ MORE
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4. Structure and mechanism of iron and magnesium chelatases - at the heme-chlorophyll branch-point
Abstract : 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. READ MORE
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5. Ferrochelatase and Magnesiumchelatase: Metal chelation studied with mutants
Abstract : Magnesium chelatase and ferrochelatase are two very important enzymes, which are involved in chlorophyll and heme biosynthesis, respectively. They both use protoporphyrin IX as substrate but magnesium chelatase inserts a magnesium ion whereas ferrochelatase inserts a ferrous ion. These two enzymes have been studied in this thesis. READ MORE