DescriptionLevels of structural organization of a protein.svg
English: Functional proteins have four levels of structural organization:
1) Primary Structure : the linear structure of amino acids in the polypeptide chain
2) Secondary Structure : hydrogen bonds between peptide group chains in an alpha helix or beta
3) Tertiary Structure : three-dimensional structure of alpha helixes and beta helixes folded
4) Quaternary Structure : three-dimensional structure of multiple polypeptides and how they fit together
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