Navigation Links
Shedding New Light on Proteorhodopsin

New light has been shed on proteorhodopsin, the light-sensitive protein found in many marine bacteria. Researchers at the U.S. Department of Energy’s Lawrence// Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley have demonstrated that when the ability to respire oxygen is impaired, bacterium equipped with proteorhodopsin will switch to solar power to carry out vital life processes.

“Our research shows that proteorhodopsin contributes to a bacterial cell’s energy balance only under certain environmental conditions, namely when the cell’s ability to respire has been impaired,” said Jan Liphardt, a biophysicist who holds a joint appointment as a Divisional Fellow in Berkeley Lab's Physical Biosciences Division (PBD) and the Physics Department of UC Berkeley (UCB).

“By harvesting light, proteorhodopsin enables bacterial cells to supplement respiration as a cellular energy source. This ability to withstand oxygen deprivation probably explains why so many ocean bacteria express proteorhodopsin.”

Liphardt said that the solar power option represents a potentially significant boost for efforts to develop alternatives to fossil fuel energy sources. Microbes that can simultaneously harvest energy from several different sources may be better at producing biofuels than microbes that can only utilize a single energy source.

The results of this study appear in a paper published by the Proceedings of the National Academy of Sciences (PNAS), entitled: Light-powering Escherichia coli with proteorhodopsin. Co-authoring the paper with Liphardt were UCB graduate students Jessica Walter and Derek Greenfield, and Carlos Bustamante, who also holds a joint Berkeley Lab-UCB appointment and is a Howard Hughes Medical Institute (HHMI) investigator.

There was a great deal of excitement in the biology community in 2000 when proteorhodopsin was first discovered encoded within the genomes of uncultivated ma rine bacteria. The discovery implied that such bacteria possessed phototrophic as well as respiratory capabilities. This would be a critical adaptation for seafaring microbes because the world’s oceans are permeated with “dead zones,” areas that lack sufficient oxygen to sustain life.

Source-Bio-Bio Technoloy
SRI
'"/>




Related medicine news :

1. Mice Aids in Shedding Light on Origin of Autism
2. Shedding Pounds from Diet or Exercise—Take Your Pic
3. Light therapy decreases depression during pregnancy
4. Light therapy devotes new hope in advanced lung cancer
5. Reducing TB With Ultraviolet Light
6. Exposure To Night Light may Increase The Risk Of Leukemia
7. Improving Lighting Could Bring About A Change In Alzheimers Patients
8. Light Cigarettes - Not So Light?
9. Fungal Infections Effectively Controlled By Light Therapy
10. Light can help fight gum bacteria
11. Lights can lighten your moods
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/4/2016)... ... 2016 , ... Trinity Health today launched its inaugural Innovation ... at improving care and reducing readmission rates for patients who are dually eligible ... is to drive innovation that transforms our ministry and our industry to be ...
(Date:5/4/2016)... SCOTTSDALE, AZ (PRWEB) , ... May 04, 2016 ... ... 2016 Annual Technology & Business Conference. The conference opened on Tuesday with Frank ... panel discussion on NCPDP’s PDMP Solution provided a deep dive on NCPDP’s model ...
(Date:5/4/2016)... ... 04, 2016 , ... Level 10 Head Over Heels Athletic Arts’ gymnast Alessandra ... of Arizona for the fall of 2019. , After a handful of college ... the GymCats came from her connection with the coaching staff and the excitement surrounding ...
(Date:5/4/2016)... ... May 04, 2016 , ... IsoComforter, Inc., one of ... the innovative newly improved Iso-Hip Wrap. The newly designed hip wrap has ... comfort and enables the patient to enjoy the benefits of cold therapy while ...
(Date:5/4/2016)... ... May 04, 2016 , ... Nike Rugby Camp's success is ... San Diego. Willis, founder of Elite Rugby Camps and current Nike Camp director, has ... year since 2009. , “I’m excited for our eighth summer here in San ...
Breaking Medicine News(10 mins):
(Date:5/3/2016)... May 3, 2016 BioNovus Innovations LLC ... for Advancing Medical Innovation (IAMI) today announced a ... diagnostics and medical devices. An agreement ... rights to license, develop and commercialize medical innovations ... "This partnership represents a significant advance in ...
(Date:5/3/2016)... , May 3, 2016  Axiogenesis has acquired a major investment from Sino-German High-Tech Fund to further expand ... Photo - http://photos.prnewswire.com/prnh/20160503/362921 ... ... ... ...
(Date:5/3/2016)... , May 3, 2016 ACME ... Jack Whelan and Delaware County Councilman ... HCI) Nasal Spray in all ACME pharmacies ... Centers for Disease Control and Prevention (CDC), naloxone has saved 26,463 ... police officers in Delaware County were authorized ...
Breaking Medicine Technology: