| This biosensor uses a genetically engineered strain of Escherichia coli specifically designed to produce a luminescent protein, luciferase, when it encounters dissolved arsenic. |
| Nearly all of this light is produced by the oxidization of the molecule luciferin, a reaction catalyzed by the enzyme luciferase. |
| The antibiotic-resistant colonies were isolated, and a second selection was performed to identify and isolate the transfectants with the highest luciferase expression. |
| And that process, in turn, can be made visible using a second enzyme, called luciferase. |
| A recombinant gene comprising an SOS gene espressed when a DNA is damaged and a gene expressing luciferase activity positioned downstream of the SOS gene. |
| The light producing enzyme luciferase from fireflies is easier to detect than utrophin. |
