HOME >> BIOLOGY >> NEWS
Lights, Camera ... Reaction: Charting The Biological Effects Of Light InBillionths Of A Second

Scientists using extremely high powered X-rays and a pulsed laser have succeeded in taking the first "snapshots" of a photoactive protein molecule as it converts light energy into chemical energy, a process that takes less than one billionth of a second.

The finding, reported in today's issue of the journal Science, provides the first direct structural evidence of how light can be converted into chemical energy -- the initial stage of processes as different, and as fundamental, as photosynthesis and vision. It also may suggest a powerful new mechanism for the development of optical computers.

The ability to record this ultra-rapid conversion results from a recent, million-fold improvement in time resolution of X-ray measurements that can now record changes in the shape of the working protein that occur in billionths of a second.

The experiments, only the second of their type, were performed by an international team at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. About one year ago, a related team reported the first nanosecond movie of the muscle protein myoglobin as it opened up to release carbon monoxide. Today's report emphasizes the wider applicability of this new type of measurement.

Keith Moffat, Ph.D., professor of biochemistry and molecular biology and director of the Consortium for Advanced Radiation Sources at the University of Chicago, who led both research teams, and colleagues from the University of Chicago, ESRF, Lund University and the E.C. Slater Institute of the University of Amsterdam, Netherlands, focused on a blue light photo-reactive protein called xanthopsin, found in the eubacterium Ectothiorhodospira halophila. These bacteria respond to the absorbtion of light by altering their swimming behavior.

This bacterium, so far found only in a few high arid lake beds in Oregon and salt depressions in the Egyptian desert, is "rather obscure," says Moffat, but this simple organism appears to be quickly
'"/>

Contact: John Easton
jeaston@mcis.bsd.uchicago.edu
773-702-6241
University of Chicago Medical Center
19-Mar-1998


Page: 1 2 3

Related biology news :

1. Charting the future in prostate cancer care: A call to action
2. Biological oceanographers examine regime shifts in complex marine ecosystems
3. Biological computer diagnoses cancer and produces drug in a test tube
4. Biological cause of one form of blindness identified by SLU researchers
5. Biological trick reveals key step in melatonins regulation
6. Journal of Gerontology: Biological Sciences to offer forum
7. Biological clock more influenced by temperature than light
8. Systematics at a Crossroads: Biological and Philosophical Arguments
9. Biological and chemical agents in terrorism examined at AAN Annual Meeting
10. Biological Challenges to Humanity: Emerging and Re-emerging Pathogens
11. Biological evidence can persuade people to change unhealthy habits

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. Mohamed Anwar ... prestigious international IAIR Award for the most innovative high security ePassport and ... ... Maldives Immigration Controller General, Mr. Mohamed ... the right) have received the IAIR award for the "Most innovative high ...
(Date:3/22/2017)... 21, 2017   Neurotechnology , a provider ... today announced the release of the SentiVeillance ... improved facial recognition using up to 10 surveillance, ... computer. The new version uses deep neural-network-based facial ... it utilizes a Graphing Processing Unit (GPU) for ...
(Date:3/20/2017)... Pa. , March 20, 2017 PMD ... 2.0 personal spirometer and Wellness Management System (WMS), a ... Founded in 2010, PMD Healthcare is a Medical ... with a mission dedicated to creating innovative solutions that ... life. With that intent focus, PMD developed the first ...
Breaking Biology News(10 mins):
(Date:5/24/2017)... , May 23, 2017 As Ebola resurfaces in ... four deaths and 20 suspected cases now reported, a new ... PubMed database, showed a correlation between the 2014 and 2017 ... counts rose sharply in 2012-13, which preceded the 2014 outbreak. ... the Ebola gene Replikin counts in 2014-15, which again precedes ...
(Date:5/23/2017)... ... May 23, 2017 , ... ... of human cardiovascular cells for research and the development of cardiac regeneration ... to generate large numbers of cardiomyocytes (hPSC-CMs). Due to varying differentiation efficiencies, ...
(Date:5/23/2017)... USA (PRWEB) , ... May 22, 2017 , ... ... Optics and Photonics 2017 in San Diego, California, this August will feature ... solar fuels, and autonomous vehicles. , SPIE Optics and Photonics, the largest multidisciplinary ...
(Date:5/23/2017)... , ... May 23, 2017 , ... ... as Vice President of Clinical Operations. She brings years of expertise in ... Therapeutics. From her professional foundation as a licensed occupational therapist, through a variety ...
Breaking Biology Technology:
Cached News: