Listeria bacteria transport electrons through their cell wall into the environment as tiny currents, assisted by ubiquitous flavin molecules (yellow dots). Image: Amy Cao graphic, UC Berkeley.
Bacteria in our guts produce electricity - life science news

Bacteria are pumping out electrons through their membrane, as many as 100,000 per second per cell. This electric current needs flavin, a derivative of vitamin B2 and abundant in the intestines. Bacteria generate electricity to remove electrons produced during metabolism and support energy production (comparable to how we use oxygen in our cells). Researchers think that bacteria produce electricity under conditions of low oxygen levels, such as in our intestines.

Read the full story: UC Berkely
Scientific publication: Nature