The scientists identified 55 proteins, many of which have not been discovered before. Some of these proteins strengthen the membrane against rupture, activate salt elimination, and enable the cells to sense and signal changes in salt levels in the environment. These results highlight proteins and mechanisms that play a key role in salinity tolerance and could pave the way for improving salinity tolerance in other organisms.
Article: Salt-induced Changes in the Plasma Membrane Proteome of the Halotolerant Alga Dunaliella salina as Revealed by Blue Native Gel Electrophoresis and Nano-LC-MS/MS Analysis, by Adriana Katz, Patrice Waridel, Andrej Shevchenko, and Uri Pick
MEDIA CONTACT: Adriana Katz, Weizmann Institute of Science, Rehovot, Israel; tel: 972-8-9342731; e-mail: firstname.lastname@example.org
New technique detects protein changes with high sensitivity and selectivity
Scientists describe a new technique that can detect how proteins undergo changes inside a cell. The technique promises to improve our understanding of how proteins inside cells work and identify how some proteins are not modified properly in common diseases such as cancer and cardiovascular diseases.
In 2006, Ola Soderberg and colleagues established a technique called in situ proximity ligation assay (in situ PLA) to reveal protein-protein interactions in cells. The technique recognizes a target protein by binding a probe consisting of a pair of proteins attached to DNA onto the target protein. Then the DNA is replicated, producing a molecule that can be visualized under a microscope as a fluorescent spot thus marking the presence of individual molecules in the target protein.
In the new study, Soderberg and colleagues developed a generalized version of the technique in which different probes can ident
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