Electron Shuffle

Shewanella bacteria generate energy for survival by transporting electrons to nearby mineral surfaces.

By Mohamed Y. El-Naggar and Steven E. Finkel | May 1, 2013

View full size JPG | PDF© THOM GRAVES

Cytochromes (structure depicted above) on the bacterial outer membranes contain a number of heme groups that accept and donate electrons, allowing the charges to flow along the membrane. Cytochromes also line cellular appendages known as pili that can conduct charges down their length to other microbes or to the mineral substrate. Additionally, the bacteria employ flavin molecules to work as electron shuttles, collecting electrons at the cell surface and carrying them to a nearby electron acceptor.

Read the full story.

Add a Comment

Avatar of: You



Sign In with your LabX Media Group Passport to leave a comment

Not a member? Register Now!

LabX Media Group Passport Logo

Popular Now

  1. Could Rapamycin Help Humans Live Longer?
  2. Renowned Physicist Stephen Hawking Dies
  3. John Sulston, Human Genome Project Leader, Dies
  4. Pupil Response to an Optical Illusion Tied to Autistic Traits