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proteins – Full Definition

metabolism - Full Definition
Definition of Proteins

 – linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.
 –  any of various naturally occurring extremely complex substances that consist of amino-acid residues joined by peptide bonds, contain the elements carbon, hydrogen, nitrogen, oxygen, usually sulfur, and occasionally other elements (such as phosphorus or iron), and include many essential biological compounds (such as enzymes, hormones, or antibodies)
 – the total nitrogenous material in plant or animal substances
 – proteins are organic compounds with a high molecular weight formed of carbon, oxygen, hydrogen and nitrogen and may also contain sulfur, phosphorus coloring non-protein organic groups and metal ions. They are polymers formed of subunits called amino acids linked together by peptide linkage.

Examples of protein in a Sentence

“You need more protein in your diet.”
These foods are an excellent source of protein.”


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