The three-dimensional structure of a protein that is often key to its enzyme function. The structure of a protein is characterized in four ways: The primary structure is the order of the different amino acids in a protein chain, whereas the secondary structure consists of the geometry of chain segments in forms such as helices or sheets. The tertiary structure describes how a protein folds in on itself; the quaternary structure of a protein describes how different protein chains hook up with each other.
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How to use protein structure in a sentence
Whether Vaughans theory of protein structure is the true one or not remains to be demonstrated.The Fundamentals of Bacteriology | Charles Bradfield Morrey