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- A large complex molecule made up of one or more chains of amino acids. Proteins perform a wide variety of activities in the cell. See also cell, gene
National Human Genome Research Institute - Cite This Source - This Definition
- A large molecule composed of one or more chains of amino acids in a specific order; the order is determined by the base sequence of nucleotides in the gene that codes for the protein. Proteins are required for the structure, function, and regulation of the body's cells, tissues, and organs; and each protein has unique functions. Examples are hormones, enzymes, and antibodies.
Human Genome Project - Cite This Source - This Definition
- Amino acid, amino acids, deoxyribonucleic acid (DNA), peptide, polypeptide, Sequencing, substitution