Related topics: cells · protein · molecules

Researchers create a photographic film of a molecular switch

Molecular switches—they are the molecular counterparts of electrical switches and play an important role in many processes in nature. Such molecules can reversibly interconvert between two or more states and thereby control ...

NMR confirms molecular switches retain function in 2-D-array

Researchers led by Jiří Kaleta of IOCB Prague have synthesized regular 2-D assemblies of isotopically labelled molecular switches and measured the properties of their isomerization, revealing that formation of such an assembly ...

New insights into the earliest events of seed germination

Plant seeds may strike the casual observer as unspectacular—but they have properties that are nothing short of superpowers. In a dry state they can store their energy for years and then suddenly release it for germination ...

Manipulating electron spin using artificial molecular motors

Artificial molecular switches and machines have undergone rapid advances over the past several decades. Particularly, artificial molecular motors are highly attractive from the viewpoint of chirality switching during rotational ...

Environment turns molecule into a switch

It looks like a cross with four arms of equal length that have a central atom at their intersection. All atoms are arranged in one plane so that the molecule is absolutely planar – at least in the normal state.

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Molecular switch

A molecular switch is a molecule that can be reversibly shifted between two or more stable states. The molecules may be shifted between the states in response to changes in e.g. pH, light, temperature, an electrical current, microenvironment, or the presence of a ligand. In some cases, a combination of stimuli are utilized. The oldest forms of synthetic molecular switches are pH indicators, which display distinct colors as a function of pH. Currently synthetic molecular switches are of interest in the field of nanotechnology for application in molecular computers. Molecular switches are also important to in biology because many biological functions are based on it, for instance allosteric regulation and vision. They are also one of the simplest examples of molecular machines.

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