Article
Phototaxis away from blue light by an Escherichia coli mutant accumulating protoporphyrin IX.
Proceedings of the National Academy of Sciences of the United States of America - 1 Aug 1995
Yang H, Inokuchi H, Adler J
Abstract excerpt
The hemH gene of Escherichia coli encodes ferrochelatase (EC 4.99.1.1), the enzyme that catalyzes the last step in the production of heme, namely the synthesis of heme from protoporphyrin IX plus Fe2+. The behavioral responses to light were studied in E. coli carrying a hemH mutation. It was shown that the hemH mutant displayed a tumbling response upon illumination and a running response upon removal of the...
Topics
- Anaerobiosis
- Cell Movement
- Chemotaxis
- Escherichia coli
- Ferrochelatase
- Genes, Bacterial
- Heme
- Humans
- Light
- Mutation
- Oxygen
- Porphyria, Erythropoietic