Channel Protein Active Transport: Why, How And Detailed Insights


The channel proteins are the significant positioning of amino acids that are embedded in the cell membrane.

The channel proteins are specific positioning of amino acids that are present in the cell membrane for enhancing the hydrophilic passage of molecules or ions. Here we shall discuss more on channel protein active transport.

These proteins are used in the facilitated diffusion of molecules or ions to down their concentration in the cell for maintaining the equilibrium. The channel proteins don’t consume cell energy. Thus this transportation is called passive transport.

There are two types of channel proteins. They are non-gated channel proteins and gated channel proteins.

Non gated channel proteins work without any specific signal released by the cell. They work continuously and allow the passage of molecules and ions into and outside the cell. Aquaporin is the best example for non gated channel protein.

The gated channel proteins work with the specific signal or chemical released by the cell. These channel proteins plays a pivotal role in the maintaining the electrical energy in nerve cells.

channel protein active transport
Image Credit : Channel protein Wikipedia

Can active transport involve a channel protein?

Active transport does not require a channel protein because channel proteins can only move molecules along the concentration gradient.

Active transport cannot involve channel proteins but they can involve carrier proteins. In active transport the molecules move against the concentration gradient whereas channel proteins aid the diffusion of molecules from high concentration gradient to low concentration gradient.

The channel proteins cannot be involved in active transport but they can be used in facilitated diffusion process.

Does active transport require protein channel?(channel protein active transport)

Active transport does not require any protein channel in the transportation of molecules or ions.

Active transport does not require protein channel but it requires carrier proteins as it transports the molecules against the concentration gradient.

In active transport the cell energy is consumed in the form of ATP molecule. It requires different carrier protein for specific molecule transportation.in general the channel proteins facilitate the diffusion of molecules or ions from high to low concentration gradient.  

Does primary active transport use protein channel?

The protein channel is not used in primary active transport. It uses only energy in the form of ATP molecule.

The primary active transport doesn’t use protein channel as it is active transport process of molecules or ions by consuming the ATP molecule.

The channel proteins facilitate the passive diffusion of molecules or ions and carrier proteins facilitate the active transportation of molecules or ions. The protein channel can make the hydrophilic passage in the cell membrane to down the concentration gradient by transporting the molecules. The carrier proteins are embedded in the cell membrane to transport the molecules across the cell membrane to down the concentration or against the concentration gradient.

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Frequently Asked Questions:

What are the examples of channel proteins?

Aquaporin is the best example for the channel protein.

Aquaporin is the common channel protein which allows the water molecules passage into and outside the cell.

What is the common channel protein mediated transport?

The most common channel protein mediated transport is SGLT1.

The SGLT1 (Sodium/ Glucose transport) is the best channel protein mediated transport which can be seen in intestinal tract.

What is the difference between Channel protein and Carrier protein?

The channel protein makes the hydrophilic pores in the cell membrane and carrier protein are integrated in the cell and cannot form aqua pores.

The channel proteins assist the transport of molecules from to down the concentration and carrier proteins assist the transport of molecules against the gradient and down the concentration gradient.

Does channel protein facilitate active transport or passive transport?

The channel protein facilitates passive transport only.

The channel proteins facilitate passive transport as it does not consume energy but active transport consumes energy.

Narne Naga Srilakshmi

Hi...I am Nagasrilakshmi Narne, a postgraduate in Biotechnology and English. also completed my B.Ed. I worked in Vimtalabs as a project trainee and I have work experience as a faculty of English. So I can explain topics in simple language. Let's connect through LinkedIn:https://www.linkedin.com/in/narne-naga-srilakshmi-55069334

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