Navigation Links
Scientists stitch up photosynthetic megacomplex
Date:11/28/2013

When sunlight strikes a photosynthesizing organism, energy flashes between proteins just beneath its surface until it is trapped as separated electric charges. Improbable as it may seem these tiny hits of energy eventually power the growth and movement of all plants and animals. They are literally the sparks of life.

The three clumps of protein a light-harvesting antenna called a phycobilisome and photosystems I and II look like random scrawls in illustrations but this is misleading. They are able to do their job only because they are positioned with exquisite precision.

If the distances between proteins were too great or the transfers too slow, the energy would be wasted and ultimately all entropy-defying assemblages like plants and animals would fall to dust.

But until now scientists weren't even sure the three complex cohered as a single sun-worshipping megacomplex. Previous attempts to isolated connected complexes failed because the weak links that held them together broke and the megacomplex fell apart.

In the Nov. 29 issue of Science scientists at Washington University in St. Louis report on a new technique that finally allows the megacomplex to be plucked out entire and examined as a functioning whole.

Like a seamstress basting together the pieces of a dress, the scientists chemically linked the proteins in the megacomplex. Stabilized by the stitches, or crosslinks, it was isolated in its complete, fully functional form and subjected to the full armamentarium of their state-of-the-art labs, including tandem mass spectrometers and ultra-fast lasers.

The work was done at PARC (Photosynthetic Antenna Research Center), an Energy Frontier Research Center funded by the Department of Energy that is focused on the scientific groundwork needed to maximize photosynthetic efficiency in living organisms and to design biohybrid or synthetic ones to drive chemical processes or generate photocurrent.


'/>"/>
Contact: Diana Lutz
dlutz@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scripps Research Institute scientists achieve most detailed picture ever of key part of hepatitis C
2. UCLA research may help scientists understand what causes pregnancy complications
3. Scientists discover how leukemia cells exploit enhancer DNA elements to cause lethal disease
4. Smithsonian scientists honored as AAAS Fellows
5. Scientists offer recommendations for delaying resistance to Bt corn in western corn rootworm
6. 5 IU scientists named AAAS Fellows for their notable contributions
7. University Of Massachusetts Medical School scientists re-imagine how genomes are assembled
8. Rice scientists ID new catalyst for cleanup of nitrites
9. Chinese scientists reveal the genomic enigma of desert poplar
10. Scientists capture redox moments in living cells
11. Scientists prove X-ray laser can solve protein structures from scratch
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists stitch up photosynthetic megacomplex
(Date:8/21/2014)... Aug. 21, 2014 Nxt-ID, Inc. (OTCQB: NXTD), ... commerce market, announced today that its shares of common ... be issued in its proposed underwritten public offering of ... on The Nasdaq Capital Market, subject to closing of ... and warrants, and will trade under the symbol "NXTD" ...
(Date:8/21/2014)... ubiquitous skin fungus linked to dandruff, eczema and other ... to even further global reachesincluding Hawaiian coral reefs and ... vents. , A review in the scientific journal ... of the fungi of the genus Malassezia ... sequencing datasets from around the world. , University of ...
(Date:8/21/2014)... -- Nine researchers from Beth Israel Deaconess ... in "The World,s Most Influential Scientific Minds 2014," ... Thomson Reuters ScienceWatch, a web resource for science metrics ... recognized as among the most influential "are performing and ... the advancement of their science," according to a Thomson ...
Breaking Biology News(10 mins):Nxt-ID Approved for NASDAQ Capital Market Listing 2Nxt-ID Approved for NASDAQ Capital Market Listing 3From dandruff to deep sea vents, an ecologically hyper-diverse fungus 2BIDMC researchers named among 'the most influential scientific minds' 2BIDMC researchers named among 'the most influential scientific minds' 3
... commercially available mineral waters, the researchers found evidence of ... the water. What,s more, these chemicals are potent in ... in the New Zealand mud snail. These findings, which ... of plastic food packaging materials act as functional estrogens, ...
... diseases that can travel with the wind have the ... understood, according to a new study, in findings that ... but also a new fungus that threatens global wheat ... State University and other institutions, concluded that invading diseases ...
... is available in Spanish . , ... of psychosis and schizophrenia, and those episodes of psychosis ... characteristics, both before their appearance and in the clinical ... conclusions of the doctoral thesis "Neurodevelopment and environmental stress ...
Cached Biology News:Hormone-mimics in plastic water bottles -- just the tip of the iceberg? 2New wheat disease could spread faster than expected 2New wheat disease could spread faster than expected 3Daily consumption of cannabis predisposes to the appearance of psychosis and schizophrenia 2
(Date:8/21/2014)... YORK , Aug. 21, 2014 Mathematic studies ... Harvard University , and funded by the Jeffrey ... cells within tumors can be visually identified for elimination. These ... growth. The study, which shows a topological map of what ... time in cancer research, for while tumor cells can be ...
(Date:8/21/2014)...  China Cord Blood Corporation (NYSE: CO ... financial results for the first quarter of fiscal year ... in the US.  The Company will ... Friday, August 29, 2014 to discuss its financial performance ... developments, followed by a question and answer session.  Interested ...
(Date:8/21/2014)... Pursuit Solutions ( http://www.pursuit-solutions.com ), ... services for Life Sciences sales and marketing organizations, ... New Commercial Sales Models” by Peter Robinson, co-founder ... article examines some innovative models used to improve ... in the pharmaceutical market. Robinson grades the industry ...
(Date:8/21/2014)... (PRWEB) August 21, 2014 ... biopharmaceutical contract development and manufacturing organization (CMO) announced ... Pharmaceuticals, Inc., an oncology company focused on the ... cancer, to manufacture the anti-prostate specific membrane antigen ... product candidate. Under the agreement the antibody ...
Breaking Biology Technology:Science Power Jeffrey Epstein and Harvard University Fund Project to Visually Stop Tumor Growth 2China Cord Blood Corporation to Report First Quarter of Fiscal 2015 Financial Results 2Pursuit's Peter Robinson Publishes "Grading Pharma's Use of New Commercial Sales Models" 2Gallus Enters Agreement with Progenics Pharmaceuticals, Inc. for Manufacture of Anti-PSMA Monoclonal Antibody 2Gallus Enters Agreement with Progenics Pharmaceuticals, Inc. for Manufacture of Anti-PSMA Monoclonal Antibody 3
... of decorative, flower-like defects in the nanomaterial graphene could ... electrical and mechanical properties, according to researchers at the ... Tech. In a new paper,* the team for the ... could occur naturally or be induced to occur in ...
... of the March 11 earthquake and rolling blackouts that ... award-winning undergraduate internship program NanoJapan is scrambling to run ... U.S. undergraduates travel to Japan for lab internships, NanoJapan ... send 25-30 students to Rice University laboratories for three ...
... May 25, 2011 Anadys Pharmaceuticals, Inc. (Nasdaq: ... the treatment of hepatitis C, announced today that it will ... the Company,s oral immuno-modulator that acts via the TLR-7 pathway, ... Meeting in Chicago, IL.  The data from the completed Phase ...
Cached Biology Technology:Defect in graphene may present bouquet of possibilities 2Reverse NanoJapan: Rice to host 25-30 Japanese students 2Anadys Highlights ANA773 Data to be Presented at ASCO 2Anadys Highlights ANA773 Data to be Presented at ASCO 3Anadys Highlights ANA773 Data to be Presented at ASCO 4
... The CHEMICON APO-BRDU Kit is ... labeling DNA breaks and total cellular DNA ... The kit contains the instructions and ... including; positive and negative control cells for ...
... overlay agarose, is a low melting point ... to secure IPG strips in place for ... incorporated to allow monitoring of electrophoresis runs. ... melting point agarose in 1x Tris, glycine, ...
... cell is an apparatus dedicated to general ... agarose slab gels. The cell includes the ... tray, 5 glass plates, 50 sheets of ... templates, and instructions. Dimensions are 21 x ...
... range of next-generation features into a small-footprint ... for flexible laboratory solutions. It puts every ... dilution, dispensing, and integrations into a ... flexible as it is efficient and economical. ...
Biology Products: