Difference Between Cofactor And Coenzyme

The human body consists of billions of cells, enzymes, organelles, etc. Enzymes are proteins necessary to control metabolism and chemical reactions In addition to enzymes, some other compounds involved in such reactions are cofactors and coenzymes.

Difference Between Cofactor And Coenzyme

Cofactors are non-protein chemical compounds called accessory molecules. They are used as catalysts in reactions and are very important.

There are two types of cofactors: coenzymes and prosthetic groups. Coenzymes are defined as organic, small, non-protein molecules and co-substrates. They act as a carrier and are easy to remove. Some examples of coenzymes include vitamin B, coenzyme A, and biotin.

What is Cofactor?

Cofactors are non-protein molecules that are essential for proper enzyme function. They assist enzymes in catalyzing organic reactions by providing the necessary chemical groups or ions needed for reactions to occur.

Cofactors can be inorganic ions, such as metal ions such as magnesium or zinc, or small organic molecules such as coenzyme A or ATP.

They participate directly in the reaction forming a close association with the enzyme and binding to specific sites on the enzyme molecule.

Cofactors play an important role in the regulation of enzyme activity, allowing enzymes to perform their functions with high efficiency and effectiveness.

What is Coenzyme?

Coenzymes are organic molecules that work together with enzymes to facilitate biological reactions. Unlike enzymes, coenzymes are not proteins but are derived from vitamins or other organic compounds. They act as carrier molecules, transferring chemical groups or electrons between different enzymes and their substrates.

Cohesive enzymes bind to the enzyme active site and play a role in catalyzing specific reactions by directly participating in chemical changes.

They enable enzymes to carry out complex metabolic reactions by providing or accepting functional groups that act as temporary carriers for drug moieties.

Coenzymes often require specific conditions or cofactors to function properly and are important for the regulation and efficiency of enzyme reactions in various metabolic pathways.



  • Co-factors are typically inorganic ions or small organic molecules.
  • They are non-protein molecules that assist enzymes in catalyzing biochemical reactions.
  • Co-factors can bind to enzymes and directly participate in the reaction.
  • They provide essential chemical groups or ions necessary for the reaction to occur.
  • Co-factors can regulate enzyme activity and enhance enzyme specificity.


  • Coenzymes are organic molecules derived from vitamins or other organic compounds.
  • They work alongside enzymes to facilitate biochemical reactions.
  • Co-enzymes act as carrier molecules, transferring chemical groups or electrons between enzymes and their substrates.
  • They bind to the active site of enzymes and directly participate in the chemical transformation.
  • Co-enzymes play a crucial role in metabolic processes by providing or accepting functional groups.

Difference Between Cofactor And Coenzyme




It carries chemical groups between enzymes They bind to an enzyme

Also known as

Cosubstrates Helper molecules


Coenzyme loosely bound to enzymes Some cofactors covalently bound the enzyme


Can be easily removed It can be removed only by denaturation


Chemical molecule Chemical compound


Organic substances Inorganic substances


It is a type of cofactor Two types of cofactors: Coenzyme and prosthetic groups


They act as carriers Increase the speed of reaction


Biotin, Vitamin, Coenzyme A Metal ions such as K+, Zn2+

Related Articles:

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button