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Enzymes
A protein serving as a catalyst, a chemical agent that changes the rate of reaction without being consumed by the reaction
Catalyst
A chemical agent that changes the rate of a reaction without being consumed by the reaction
Polypeptides
A polymer (chain) of many amino acids linked together by peptide bonds
Protein
A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids
Amino Acid
An organic molecule possessing both carboxyl and amino groups. Amino acids serve as the monomers of proteins
Peptide Bond
The covalent bond between two amino acid units, formed by a dehydration reaction
Primary Structure
The level of protein structure referring to the specific sequence of amino acids
Secondary Structure
The localized, repetitive coiling or folding of the polypeptide backbone of a protein due to hydrogen bond formation between peptide linkages
Alpha (α) Helix
A spiral shape constituting one form of the secondary structure of proteins, arising from a specific hydrogen-bonding structure
Beta (β) Pleated Sheet
One form of the secondary structure of proteins in which the polypeptide chain folds back and forth. Two regions of the chain lie parallel to each other and are held together by hydrogen bonds
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