Bacteria that have the enzyme tryptophanase, can convert the amino acid, tryptophane to indole. Indole reacts with added Kovac’s reagent to form rosindole dye which is red in color (indole +).

Infections caused by the bacteria S. aureus typically first appear as small red bumps on the surface of the skin. Once the bacteria penetrates the body, it can be deadly, developing into life ...

The bacteria internally synthesize a chain of magnetic nanoparticles (shown as red pentagons in Figure 3), which act as a nano-sized magnet that allows the bacteria to passively align with Earth's ...