Natasha Raikhel, Distinguished Professor of Plant Cell Biology at UC Riverside, reports in the Proceedings of the National Academy of Sciences the mechanisms plants use to process and degrade proteins. (Photo credit: N. Raikhel.)
In plants, many proteins are degraded or activated within the vacuole, a large water and nutrient-filled vesicle found in plant cells that helps maintain the shape of plant cells and that stores food molecules. The manner by which this degradation or activation occurs, however, is uncertain.
In the June 10, 2003, issue of the Proceedings of the National Academy of Sciences (PNAS), however, scientists from UC Riverside identify a key protein, vacuolar processing enzyme or VPEg, in Arabidopsis thaliana (thale cress) that is required for this process.
"Plants that do not have VPEg fail to accumulate the active form of an important vacuolar enzyme and fail to degrade a variety of proteins that would not normally accumulate to high levels within vacuoles, particularly those of older tissues," said Natasha Raikhel, Distinguished Professor of Plant Cell Biology at UC Riverside and the principal investigator of the research project.
Iqbal Pittalwala | UC Riverside
Biomarkers for identifying Tumor Aggressiveness
26.07.2017 | Max-Delbrück-Centrum für Molekulare Medizin in der Helmholtz-Gemeinschaft
The dense vessel network regulates formation of thrombocytes in the bone marrow
25.07.2017 | Rudolf-Virchow-Zentrum für Experimentelle Biomedizin der Universität Würzburg
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
25.07.2017 | Physics and Astronomy
25.07.2017 | Earth Sciences
25.07.2017 | Life Sciences