A molecular machine, nanite, or nanomachine is a molecular component that produces quasi-mechanical movements (output) in response to specific stimuli (input). In cellular biology, macromolecular machines frequently perform tasks essential for life, such as DNA replication and ATP synthesis.
- What do you mean by molecular machine?
- Which of the following are the example of molecular machine?
- What are macromolecule machines?
- What are natural molecular machines?
- What are molecular machines used for?
- What are Catenanes and Rotaxanes?
- Is DNA a molecular machine?
- How do molecular motors work?
- What is a protein machine?
What do you mean by molecular machine?
Definition. Molecular motors, also called molecular machines, are either natural or synthetic molecules that convert chemical energy into mechanical forces and motion. An example of a biological motor is the protein kinesin, which uses the hydrolysis of adenosine triphosphate to move along microtubule filaments.
Which of the following are the example of molecular machine?
Examples of biological molecular machines include myosin, kinesin, dynein, and ribosomes. Myosin is a protein found in muscles, which is responsible for causing muscles to contract. Kinesin is a protein that moves “cargo” within the cell.
What are macromolecule machines?
Macromolecular machines are assemblies containing more than one active site to facilitate co-localization and/or coupling of enzymatic activities. Multi-enzyme complexes are a type of macromolecular machine typically involved in catalyzing sequential chemical reactions and utilized by numerous metabolic pathways.
What are natural molecular machines?
Other important examples of natural molecular machines are ribosomes that synthesize proteins, DNA helicase which locally unzips double stranded DNA and RNA polymerase that synthesize messenger RNA using a single-stranded DNA as the template and Na‑K pump that transports ions across the cell membrane.
What are molecular machines used for?
A molecular machine, nanite, or nanomachine is a molecular component that produces quasi-mechanical movements (output) in response to specific stimuli (input). In cellular biology, macromolecular machines frequently perform tasks essential for life, such as DNA replication and ATP synthesis.
What are Catenanes and Rotaxanes?
7A [2]catenane is typically generated by cyclization of one or both rings (clipping), whereas a [2]rotaxane is typically prepared by either: a) stoppering a pseudo-rotaxane, b) clipping shut a ring around a stoppered axle, or c) snapping two stoppered half axles through the cavity of a ring.
Is DNA a molecular machine?
DNA topoisomerases are molecular machines that interconvert different DNA topoisomers and resolve torsional stress that is introduced during cellular processes that involve local DNA unwinding.
How do molecular motors work?
The principal mechanism by which molecular motors accomplish these diverse functions is binding to and moving along cytoskeletal filaments (either microtubules or actin filaments) by transducing the chemical energy available from the hydrolysis of ATP into mechanical work (Block, 2007; Gennerich and Vale, 2009; Schliwa …
What is a protein machine?
These protein machines, acting as motors and pumps or performing operations with other biomolecules, such as DNA, underlie basic functions of the cell. Understanding of their mechanisms is essential for molecular biology and for prospective biotechnology applications.