Molecular motors research paper

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DNA motor 'walks' along nanotube, transports tiny particle

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Molecular Machines and Motors - Recent Advances and Perspectives | Alberto Credi | Springer

Molecular motors are natural biological or artificial molecular machines that are the essential agents of movement in living organisms. In general terms, a motor is a device that consumes energy in one form and converts it into motion or mechanical work ; for example, many protein -based molecular motors harness the chemical free energy released by the hydrolysis of ATP in order to perform mechanical work. One important difference between molecular motors and macroscopic motors is that molecular motors operate in the thermal bath , an environment in which the fluctuations due to thermal noise are significant. Some examples of biologically important molecular motors: [2]. There are two major families of molecular motors that transport organelles throughout the cell.
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Molecular motors

A molecular machine , nanite , or nanomachine [1] is a molecular component that produces quasi-mechanical movements output in response to specific stimuli input. The expression is often more generally applied to molecules that simply mimic functions that occur at the macroscopic level. The term is also common in nanotechnology where a number of highly complex molecular machines have been proposed that are aimed at the goal of constructing a molecular assembler. For the last several decades, chemists and physicists alike have attempted, with varying degrees of success, to miniaturize machines found in the macroscopic world.
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Researchers at Purdue University and The Catholic University of America have discovered the structure of an enzyme essential for the operation of "molecular motors" that package DNA into the head segment of some viruses during their assembly. The enzyme, called an ATPase, provides energy to run the motor needed to insert DNA into the capsid, or head, of the T4 virus, which is called a bacteriophage because it infects bacteria. The same kind of motor, however, also is likely present in other viruses, including the human herpes virus. The article's lead author is Siyang Sun pronounced See-Young Sun , a postdoctoral research associate working in Rossmann's lab. The researchers have proposed a mechanism for how the motor works.
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