Protein By: Brayden colón

A protein is a macromolecule made up of amino acids. Proteins can range in size, smaller ones consisting of a few hundred proteins, and large ones containing around 27,000. Proteins are made of multiple polypeptide chains, which are combined amino acids that shape a chain. It looks like large, long chains of chemicals stretched out or bunched up.

A polypeptide chain

Proteins have multiple functions in the human body. Some include: muscle growth and function, digestion, antibodies, transportation, and hormones.

Muscles: Muscles are formed from many proteins that stretch and contract, allowing them to work. The proteins found in muscles are actin and myosin.

Hormones: Hormones are made of proteins and control different chemicals in the body. An example of this is adrenaline, which is a protein transported through the body.

Antibodies: Antibodies are proteins that attach to bacteria and kill them.

Transportation: Proteins transport materials throgought the body and within cells. An example is the protein hemoglobin, which transports oxygen and red blood cells through the body.

Enzymes: One of the largest functions of proteins in the body are for digestion in the gut. The proteins in the gut are called enzymes, and they speed up chemical reactions. They stay unaffected through the reaction.

Proteins come primarily from food. Different foods have protein, and the proteins are used by the body. One of the largest sources of protein is meat. Proteins are found in the gut as enzymes and throughout the body as muscles.

Discoverer of Protein: Linus Pauling discovered the protein molecule in 1950.

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