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:
(Date:10/16/2014)... be cultivated efficiently, they are anything but sustainable: ... monoculture cultivation is becoming increasingly evident. Despite their ... and are regarded as the sole possibility of ... wrongfully, finds Bernhard Schmid, an ecology professor at ... form of agriculture and forestry. After all, a ...
(Date:10/16/2014)... SHELTON, Conn. , October 16, 2014 ... ("NXT-ID" or the "Company"), a biometric authentication company focused ... present its leading edge technologies including Wocket™, the Smart ... Review® (FiRe) Conferenece. FiRe is a leading global conference ... Hosted by Mark Anderson , founder ...
(Date:10/15/2014)... biophysics textbook and it describes how life functions and ... into biological systems and provides an understanding of the ... how our genes make proteins that control the dynamics ... an organism. It quantifies the principles of life and ... on both large and small scales. The book is ...
Breaking Biology News(10 mins):Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3New book about life as seen from physics 2
(Date:10/19/2014)... Mass. , Oct. 19, 2014 NextCODE Health, ... the whole genome in real time, today announced the launch ... NextCODE Exchange , at the American Society of Human ... . To learn more, sign up and apply for free ... its unique features and benefits can be viewed here ...
(Date:10/19/2014)... The Asian Orthopedic braces and support systems report ... and forecast of revenue. The Orthopedic braces and support systems ... million by 2018, at a developing CAGR of 4.4% from ... Asian Orthopedic braces and support systems market, to get an ... glimpse of the segmentation of orthopedic braces and support systems ...
(Date:10/18/2014)... The report "1,6-Hexanediol Market by Application and ... analyzes the global market on the basis of ... details such as the key drivers, current trends ... Browse 81 Market Data Tables and 29 Figures ... “1,6-Hexanediol Market by Application and by Geography - ...
(Date:10/18/2014)... The Biomass Power industry has ... to 2014. The industry's expansion has been propelled in ... encouraged the use of biomass power. Furthermore, the majority ... require local utilities to generate electricity from renewable power ... campaigning for green technology also influenced industry performance by ...
Breaking Biology Technology:The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 2Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 3
Cached News: