Navigation Links
SEX4, starch and phosphorylation
Date:6/25/2008

Energy from the sun and carbon dioxide fuel photosynthesis in plants and algae, making life on earth possible. Carbon that is fixed by plants is converted to starch and sucrose, which are utilized by plants for energy and to build biomass. Human evolution and society have been intimately tied to our exploitation of plant biomass for food, fuel, tools, and shelter. However, to be usable, the starch carbohydrate stored in plants must be broken down to component sugars. Some aspects of starch metabolism have been known for many years, but regulation of the process and exact physical mechanisms are still not well understood. With new information emerging from genome sequencing and mutational analyses, we are beginning to gain a better understanding of these complex and finely tuned processes. Such knowledge is especially critical as we struggle with issues of energy and food supply.

Some of the new molecular mechanisms and regulatory components in starch metabolism have been identified by Dr. Samuel Zeeman and his colleagues. Dr. Zeeman, of the Institute of Plant Sciences, ETH Zurich, in Switzerland, who is the 2007 recipient of the Charles Albert Shull Award, will be presenting this work at the opening Awards Symposium of the annual meeting of the American Society of Plant Biologists in Mrida, Mexico (June 27, 2:30 PM). Mutational and structural analyses by Dr. Zeeman and his colleagues have revealed that starch degradation in Arabidopsis leaves at night differs significantly from the versions traditionally described in textbooks. Specifically, mutations at the Starch Excess 4 (SEX4), Maltose Excess 1 (MEX1) and other loci produce plants unable to metabolize starch to a usable form.

When we use starch in the lab or cook with it, we tend to think of it as an amorphous mass, but it is really a complex, ordered substance. Starch consists of two polysaccharides (polymers of the simple sugar glucose)--amylopectin and amylose. Both ar
'/>"/>

Contact: Dr. Samuel Zeeman
41-446-328-275
American Society of Plant Biologists
Source:Eurekalert

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2014)... Peru found that 28 percent of the batches ... Many pills released the active ingredient too slowly. ... had no active ingredient at all. , ... Georgia Institute of Technology developed a sophisticated approach ... drugs and then characterize their chemical composition. The ...
(Date:4/18/2014)... URBANA, Ill. For the past 20 years, researchers ... of the research findings have suggested that soil organic ... or conventional tillage systems to no-till systems. However, there ... no-till systems in corn and soybean rotations without cover ... soil organic carbon stocks at the published rates. , ...
(Date:4/18/2014)... Asteroid and comet impacts can cause widespread ecological ... even global scales. But new research from Brown University ... ancient life at the time of an impact. , ... has found fragments of leaves and preserved organic compounds ... in Argentina. The material could provide a snapshot of ...
Breaking Biology News(10 mins):Counterfeit contraceptives found in South America 2Counterfeit contraceptives found in South America 3Researchers question published no-till soil organic carbon sequestration rates 2Researchers question published no-till soil organic carbon sequestration rates 3Researchers question published no-till soil organic carbon sequestration rates 4Impact glass stores biodata for millions of years 2Impact glass stores biodata for millions of years 3
... Cincinnati, OH, April 14, 2011 -- The number of couples ... often use assisted reproductive technologies, like in vitro fertilization (IVF), ... can also increase the risk of multiple pregnancies (i.e., twins ... one embryo. Twins and triplets are likely to be ...
... hormone known to inhibit aging can also protect kidneys against ... Scientists led by Dr. Makoto Kuro-o, associate professor of pathology, ... renal fibrosis a common complication of chronic kidney disease ... online in the Journal of Biological Chemistry . ...
... and economic security concerns have triggered interest in using algae-derived ... or any other biofuel source can require a ... smart about where we grow algae can drastically reduce how ... biofuel, while being water-wise, could also help meet congressionally mandated ...
Cached Biology News:New study finds stronger regulations of in vitro fertilization may save lives 2Anti-aging hormone Klotho inhibits renal fibrosis, cancer growth 2Study: Algae could replace 17 percent of US oil imports 2Study: Algae could replace 17 percent of US oil imports 3Study: Algae could replace 17 percent of US oil imports 4
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
(Date:1/14/2014)... EquitiesIQ, a leading informational research provider, has ... an emerging biomedical company acquiring, developing, manufacturing, and marketing ... Free report download: http://equitiesiq.com/reports/alliqua/ , In late ... and Board, which launched the company’s new strategy to ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 In recent ... motives and methods in product development and promotion has ... industry. This mistrust, fueled by concerns about the insidious ... by reports of spectacular fines to the world’s biggest ...
(Date:1/14/2014)... 13, 2014 Bob Hainsey, a semiconductor ... 20 years in the industry, has joined SPIE, ... will serve as the society’s Science and Technology Strategist. ... SPIE as our Technology Strategist, further strengthening the technical ...
Breaking Biology Technology:Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
... Aoxing Pharmaceutical,Company, Inc. (OTC Bulletin Board: CAXG), which ... highly regulated narcotic,medicines and pain medication in China, ... fiscal 2008 ended September 30, 2007. China ... first quarter of fiscal 2008, a 33% sequential ...
... Convergence and New Opportunities, NEW BRUNSWICK, N.J., Nov. ... organizational changes to sharpen its,focus on opportunities outside its ... health care. These include the creation of a new,strategy ... The,changes are designed to accelerate growth for Johnson & ...
... 14 Advanced Life Sciences,Holdings, Inc. (Nasdaq: ... development and commercialization of novel drugs in the,therapeutic ... its financial results for the third quarter ended ... The net loss for the three months ended ...
Cached Biology Technology:China Aoxing Pharmaceutical Reports Financial Results for the First Quarter of Fiscal 2008 2China Aoxing Pharmaceutical Reports Financial Results for the First Quarter of Fiscal 2008 3China Aoxing Pharmaceutical Reports Financial Results for the First Quarter of Fiscal 2008 4China Aoxing Pharmaceutical Reports Financial Results for the First Quarter of Fiscal 2008 5Johnson & Johnson Announces Changes to Accelerate Growth 2Johnson & Johnson Announces Changes to Accelerate Growth 3Advanced Life Sciences Announces Third Quarter 2007 Financial Results 2Advanced Life Sciences Announces Third Quarter 2007 Financial Results 3Advanced Life Sciences Announces Third Quarter 2007 Financial Results 4Advanced Life Sciences Announces Third Quarter 2007 Financial Results 5Advanced Life Sciences Announces Third Quarter 2007 Financial Results 6Advanced Life Sciences Announces Third Quarter 2007 Financial Results 7Advanced Life Sciences Announces Third Quarter 2007 Financial Results 8Advanced Life Sciences Announces Third Quarter 2007 Financial Results 9
...
... Signet offers the most comprehensive, cost-effective ... We have incorporated unprecedented quality into ... This includes proven detection chemistries and ... the TechMate protocol. It also includes ...
... Signets Xylene Resistant (X/R) Red System ... X/R Red Activator and X/R Red ... with alkaline phosphatase to produce red ... ,Kit Contains:, , Buffer, 100 ...
Human Cell Line Slides...
Biology Products: