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ATP Driven Pumps I: An Overview01:27

ATP Driven Pumps I: An Overview

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ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
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The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
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ATP Driven Pumps III: V-type Pumps01:30

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V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
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The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
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Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
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An Artificial Molecular Pump Powered by Light.

Federico Nicoli1,2,3, Chiara Taticchi1,2, Stefano Corra1,2

  • 1CLAN-Center for Light Activated Nanostructures, Alma Mater Studiorum - Università di Bologna and National Research Council of Italy (CNR), Bologna, Italy.

Angewandte Chemie (International Ed. in English)
|April 17, 2026
PubMed
Summary
This summary is machine-generated.

Scientists developed a novel artificial molecular pump powered by light. This light-driven system autonomously moves molecules uphill, creating non-equilibrium conditions for potential applications in adaptive materials.

Keywords:
azobenzenemolecular motorphotochemistryrotaxanesupramolecular chemistry

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Area of Science:

  • Nanoscience
  • Supramolecular Chemistry
  • Photochemistry

Background:

  • Biological systems efficiently convert energy into directed motion.
  • Artificial molecular pumps capable of autonomous, light-driven uphill transport are currently elusive.
  • Developing synthetic systems that mimic biological functions is a key challenge.

Purpose of the Study:

  • To design and demonstrate a light-powered artificial molecular pump.
  • To achieve autonomous transport of substrates against their thermodynamic gradient.
  • To establish a foundation for synthetic, light-controlled non-equilibrium systems.

Main Methods:

  • Utilized a photon-driven energy ratchet mechanism.
  • Engineered a system for active transfer of macrocycles into a high-energy compartment.
  • Determined kinetic and thermodynamic parameters.
  • Developed a comprehensive mechanistic model.

Main Results:

  • Successfully demonstrated a light-driven molecular pump.
  • Achieved autonomous transfer of macrocycles from solution into an intramolecular compartment.
  • Sustained a non-equilibrium distribution of species under continuous light irradiation.
  • Quantified key kinetic and thermodynamic parameters.

Conclusions:

  • The developed molecular pump operates via a robust photon-driven energy ratchet.
  • This system represents a significant step towards fully synthetic, light-controlled non-equilibrium systems.
  • Potential applications include adaptive materials and solar energy conversion.