Article
A mutant Bradyrhizobium japonicum delta-aminolevulinic acid dehydratase with an altered metal requirement functions in situ for tetrapyrrole synthesis in soybean root nodules.
The Journal of biological chemistry - 25 Aug 1995
Chauhan S, O'Brian M R
Abstract excerpt
The tetrapyrrole synthesis enzyme delta-aminolevulinic acid (ALA) dehydratase requires Mg2+ for catalytic activity in photosynthetic organisms and in Bradyrhizobium japonicum, a bacterium that can reside symbiotically within plant cells of soybean root nodules or as a free-living organism. ALA dehydratase from animals and other non-photosynthetic organisms is a Zn(2+)-dependent enzyme. A modified B. japonicum ALA...
Topics
- Amino Acid Sequence
- Animals
- Base Sequence
- Cattle
- DNA, Bacterial
- Genes, Bacterial
- Heme
- Humans
- Magnesium
- Molecular Sequence Data
- Mutation