Sentences with phrase «zinc ions»

These are DNA strands that break apart at specific positions when exposed to a high concentration of zinc ions.

After several attempts, the team found that zinc ions added to the water would attach the molecule to the sample dish.

Inside the stack, zinc ions pass through a selective membrane and change into metallic zinc on the stack's negative side.

Another biotech startup, called Z53 Therapeutics, in Cleveland, Ohio, is taking aim not at the cleft in mutated p53, but at mutations that knock out a key site for binding zinc ions in p53's core.

When mixed with zinc ions, urobilin forms a phosphorescent compound, Yakovlev explains.

«It has also been known for a long time that following transient severe brain injury and prior to an initial spontaneous epileptic seizure, the concentration of free zinc ions increases in the hippocampus.

When the battery is fully discharged, both tanks hold the same electrolyte solution: a mixture of the positively charged zinc ions, Zn2 +, and negatively charged iodide ion, I -.

It is difficult to get useful DNA evidence from a spent bullet casing: copper and zinc ions from the brass alloy react with sweat to break down DNA, destroying evidence about who may have loaded a gun.

In their technique, the UW - Madison team applied a specially formulated surfactant — a detergent - like substance — onto the surface of a liquid containing zinc ions.

According to Yadav, this is the first time a novel calcium hydroxide interlayer is used to block the poisonous zinc ions through complexation.

Shen et al. grew ordered arrays of microcrystals of the ZIF - 8 metal - organic framework, in which zinc ions are bridged by 2 - methylimidazole linkers, inside a porous polystyrene template.

The natural enzyme has two zinc ions bridged by a hydroxyl group as the active catalytic site.

The key was using zinc ions to template the threading of one macrocycle precursor through flanking preformed macrocycles, after which metathesis catalysis closed up the first ring, and the metal could be flushed out.

A water sample is placed inside the cylinder where it interacts with zinc ions, and a laser light is beamed into the object and onto the sample through a small hole, Yakovlev explains.

If the number of zinc ions increases following transient severe brain damage, these ions dock in greater numbers onto a switch, the so - called metal - regulatory transcription factor 1 (MTF1).

PNNL's new zinc - polyiodide flow battery's electrolytes carry positively charged zinc ions and the negatively charged ions iodide and polyiodide.

The two gray balls are zinc ions.

If the zinc ions or the transcription factor MTF1 were specifically inhibited in the brain, it is possible that the development of a seizure disorder could be prevented.

Those sulfate ions draw the positively charged zinc ions from within the liquid to the surface, and within a couple hours enough zinc ions are drawn up to form continuous zinc oxide nanosheets only a few atomic layers thick.

Over time, the zinc ions in MOF - 5 (pink solutions) get replaced with cobalt ions, (blue solutions) demonstrating the dynamics of metal organic frameworks.

«With our design, zinc ions are reduced and deposited on the exposed back surface of the zinc electrode during charging,» said Higashi, lead author of the study.

They then made amyloids by allowing copies of each peptide to clump together, adding zinc ions to help the process along.

This means if urobilin is present in a water sample — and zinc ions have been added — the sample will give off a greenish glow when examined under an ultraviolet light, he says.

Intriguingly, the receptors were found to incorporate a zinc ion held in place by three histidine amino acid residues.

The discovery of the presence of a zinc ion is also fascinating, though more work will be required to understand its significance.»

Increasing the zinc ion concentration after DNA isolation releases the short staple sequences, which then fold the main strand into the desired shape.

An alternative function chelating the zinc ion would ensure a better selectivity.

The spheres indicate the zinc ions in the active site.

The researchers then selectively exchanged the zinc ions with Fe2 +, Pb2 +, and Co2 +, thereby making a new set of 2 - D MOFs (J. Am.

We know that zinc ions have an affinity for sulfur, forming sulfides with low solubility.

Carnosine will bind to copper, iron, and zinc ions to help ride the body of these excess metals20.

In some systems, water is pumped through a chamber containing titanium plates and copper and zinc ions, while other systems result in a reduced dependence on chlorine.