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Structure of Protein: Primary, Secondary, Tertiary, and Quaternary Protein Structures

Proteins are an important class of molecules found in all living cells. A protein is composed of one or more long chains of amino acids, the sequence of which corresponds to the DNA sequence of the gene that encodes it. Proteins play a variety of roles in the cell, including structural (cytoskeleton), mechanical (muscle), biochemical (enzymes), and cell signaling (hormones). Proteins are also an essential part of diet.

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current18:19, 26 September 2010Thumbnail for version as of 18:19, 26 September 2010657 × 720 (168 KB)Ashcraft

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