AAT Bioquest

What are types of carrier proteins?

Posted January 22, 2024


Carrier proteins are a type of cell membrane protein that is responsible for transporting substances across the membrane. Depending on the energy source, the carrier proteins may be classified as ATP-driven or electrochemical potential-driven. 

  • ATP-driven carrier proteins require ATP to transport molecules. This form of active transport in which a form of chemical energy such as ATP fuels the process is known as primary active transport.
  • Electrochemical potential-driven carrier proteins require an electrochemical potential gradient to fuel their transport activity. This form of active transport is called secondary active transport.
Additional resources

Carrier Proteins and Active Membrane Transport

Cell Signaling

Intracellular Ion Assay Kits for Potassium and Chloride Channels