Magnesium-protoporphyrin chelatase of Rhodobacter sphaeroides: reconstitution of activity by combining the products of the bchH, -I, and -D genes expressed in Escherichia coli

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Publisher: National Academy of Sciences
Document Type: Article
Length: 65 words

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Abstract :

The photosynthetic bacterium Rhodobacter sphaeroides serves as model to study magnesium-protoporphyrin chelatase present in the branch point of the heme and bacterio chlorophyll biosynthetic pathways. The bchH, -I, and -D genes expressed in Escherichia coli from R. sphaeroides catalyze the introduction of Mg into protoporphyrin IX in an ATP-dependent manner. Thus, the three genes are involved in the Mg chelatase step in bacterio chlorophyll biosynthesis.

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Gale Document Number: GALE|A17102096