Symporter

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Symporter

Symporter (pronounced: sim-por-ter) is a type of integral membrane protein involved in transport across a cell membrane. It functions by simultaneously transporting two types of molecules across the membrane in the same direction.

Etymology

The term "Symporter" is derived from the Greek words "syn" meaning "together" and "portare" meaning "to carry". It refers to the protein's function of carrying two different molecules together in the same direction.

Function

A symporter works in the cell membrane to allow specific types of ions or molecules to move across the membrane. This movement is always in the same direction, either into or out of the cell. The symporter uses the concentration gradient of one of the molecules to power the transport of the other molecule. This process is a type of cotransport or secondary active transport.

Types of Symporters

There are several types of symporters, each transporting different types of molecules. Some examples include:

Related Terms

  • Antiporter: A type of transport protein that moves ions or molecules in opposite directions across a cell membrane.
  • Uniporter: A type of transport protein that moves a single type of ion or molecule in one direction across a cell membrane.
  • Cotransport: The simultaneous transport of two or more different molecules across a cell membrane in the same direction.

External links

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