Thus, the energy released during enzyme catalysis could be used to propel nanoscale objects, e.g. molecule motors driven by enzymatic reactions.
It's not the first single-molecule motor ever made, but this one, unlike others, can be activated singly by the minute tip of a scanning electron microscope.
In contrast to motor proteins, powered by ATP hydrolysis or proton gradients, there are as yet no chemically driven synthetic small-molecule motors that can operate autonomously (i.e. as long as a chemical fuel is present), the closest counter-examples being the over-crowded alkene motors designed by Feringa and co-workers that rotate continuously under irradiation with light.
The results relative to ketamine corroborate previous findings and suggest that this molecule affects motor preparation through the blockade of NMDA receptors.
The main source of gas phase NO2 molecule is motor vehicle exhausts and heavy industry.
Protein molecular functions seen to be often affected are those that relate to: binding, catalytic, transcription regulation, structural molecule, transporter, motor, and antioxidant; and the processes that are often affected are nucleic acid binding, signal transduction, and protein-protein interactions.
They envisage the heavy lifting (or rather the light lifting) being done by modified versions of natural molecules called motor proteins.
Our results show that the strategy to block virulence of human pathogens can be based on small molecules targeting motor proteins of bacterial secretory systems.
The expression and function of those molecules within motor neurons need to be studied to elucidate the entire mechanism.
This analysis showed that both processive and diffusive motors bleach in up to four steps, indicating the presence of four eGFP molecules per motor.
