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Tag: "ion" at biology news

Spider Venom Could Yield Eco-Friendly Insecticides

...ins that are essential for interaction with insect ion channels. (Ion channels allow the movement of ions -- small charged molecules -- across cell membranes.) His next challenge is to use this information to design insecticides that specifically target insect pests without affecting vertebrates. One ap...

Wisconsin researchers identify sleep gene

...phila (fruit fly) gene, called Shaker, produces an ion channel that controls the flow of potassium into c...id mutation. Because of the mutation, a functional ion channel could not be formed on the cell membrane and potassium therefore could not flow through it. ...

50-year-old Mystery Solved: Protein Tags Regulate Key Ion Channel

...dds a new chapter to the book of how cells control ion channel function: reversible peptide linkage." Io...radual doling out or sudden influx of ions through ion channels are the basis for those cellular activities that give us thoughts, sights, tastes, sounds a...

Discovery may lead to better Candidiasis drug

...ne protein called TRK1p, which regulates potassium ion flow through the cell membrane of the pathogenic fungus Candida albicans and allows the cell to regulate its volume. The binding action of histatin acts like a "foot in the door," said Edgerton, UB research associate professor of oral biology in the...

Integration of Agilent's MS technology, Proteome Systems' software to help scientists in proteomics research

...tible with the Agilent XCT, XCT Plus and XCT Ultra ion trap mass spectrometers. Proteome Systems developed GlycomIQ to address the emerging field of glycomics, which examines how glycosylation, or the addition of sugars to proteins, affects biological processes and systems. GlycomIQ comprises kits, cons...

Product improves peptide identification for proteomics research

...Inc. (NYSE: A) today introduced a high-performance ion trap mass spectrometer (MS) that allows pharmaceut...n Imatani, product marketing manager for Agilent's ion trap mass spectrometers. "The high resolution, scan speed and sensitivity of the LC/MSD Trap XCT Ult...

Remote control flies? Fly behavior controlled by laser light

...o the lock. For the lock, the researchers used an ion channel, or a pore-forming protein that allows cha...ell membrane. The small molecule ATP activates the ion channel chosen by the researchers, so ATP became the key. To keep the ATP from binding to the ion ch...

Hopkins scientists uncover 'tags' that force proteins to cell surface

...ural proteins that use one of these "tags" are the ion channel that lets heart cells contract on cue, and the docking point that allows HIV, the virus that causes AIDS, into cells, the researchers discovered. Because proteins on the cell surface are "lock-on" sites for drugs and other molecules, as well...

Nanoscale method for investigating living systems

...ell it stimulates the opening and closing of these ion channels. What we've found is that these quantum dots can form artificial pores that enhance the flow of ions and which we can control from the outside via voltage." Quantum dots can be encoded with different colors making them useful as fluorescent...

Researchers find how some antibiotics kill bacteria

...hogenic bacteria by removing the crucial magnesium ion (Mg2+) from a bacterium's RNA polymerase. "Removing this ion is like removing spark plugs from an engine," Artsimovitch said. "The car may look fine, but it won'...

Water management in cells

...ganic reaction In addition to water channels and ion channels, organic particles play an important role. If the salt balance is disrupted, so-called 'volume-regulated anion channels' are first of all activated. These ensure that chloride ions leave the cell. Further research revealed that the efflux of...

Enzyme affects hypertension by controlling salt levels in body

... is well known to lead to the activation of sodium ion channels in kidney cells. "The kidney plays a ver...GK1 was one of those proteins. Because he works on ion channels, including sodium channels, Dr. Huang joined efforts with Dr. Cobb to study how WNK1 regula...

Making plant cells work like miniature factories

... to the mass-to-charge ratios, and collected by an ion detector. The detector converts ion flux into a proportional electrical current. Finally, the magnitude of the electrical signals is rec...

Drug resistant avian influenza viruses more common in Southeast Asia than North America

...coat of the influenza virus. The M2 protein is an ion channel located in the envelope of the virus that permits hydrogen ions (protons) to enter the flu virion. This influx of protons allows the virus to shed its coat after it enters a cell-an essential step in the replication of the virus. Amantadine i...

Stem cells' electric abilities might help their safe clinical use

...Hopkins have discovered the presence of functional ion channels in human embryonic stem cells (ESCs). These ion channels act like electrical wires and permit ESCs, versatile cells that possess the unique ability ...

Molecular cabal contributes to stroke damage

...ronal damage that they studied is an "acid-sensing ion channel," (ASIC)--basically, a pore-like protein in the membranes of neurons. In response to the acid unleashed by ischemia, ASICs open to admit calcium into the cell, and calcium overload is central to neuronal death. In their experiments, Gao and ...

Clocking in Pillow Time without the Pillow

...e, they transduce excitatory signals by opening an ion channel. Ampakines including CX717 make the activated channel stay open longer when glutamate binds. More ions pass through the channel, creating a stronger signal when nerve cells are activated. The ubiquity of these receptors makes them good target...

Noise And Delays Explain Why Some Genes Oscillate In Activity

...e, they transduce excitatory signals by opening an ion channel. Ampakines including CX717 make the activated channel stay open longer when glutamate binds. More ions pass through the channel, creating a stronger signal when nerve cells are activated. The ubiquity of these receptors makes them good target...

New battery technology helps stimulate nerves

...developed a new generation of rechargeable lithium ion batteries whose lifetimes are more than twice as long as the batteries now used in the tiny medical devices. "It turns out the organosilicon compounds are really good for improving lithium battery technology," says West, whose new battery technology...

Islands in the Genome Promote Speciation

... sudden increases in temperature (heat shock), and ion transport across cell membranes. Future work focusing on the 67 genes hypothesized to reside in the divergent regions should yield interesting clues to the identity of genes that drive speciation, and the mechanism by which they do so. This is a sig...

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