Function of proteins
What is the function of proteins in your body?
Proteins have many functions. They serve as enzymatic catalysts, are used as
transport molecules (hemoglobin transports oxygen) and storage molecules (iron is stored
in the liver as a complex with the protein ferritin); they are used in movement (proteins
are the major component of muscles); they are needed for mechanical support (skin and
bone contain collagen-a fibrous protein); they mediate cell responses (rhodopsin is a
protein in the eye which is used for vision); antibody proteins are needed for immune
protection; control of growth and cell differentiation uses proteins (hormones). These
are just a few examples of the many, many functions of proteins.
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Update: June 2012