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  2. Proteins and Polypeptides: basics, structures, properties

    • Proteins are among the most abundant organic molecules in living systems and are vastly diverse in structure and function as compared to other classes of macromolecules. Even one cell contains thousan… See more

    The 4 Protein Structures

    Four different structures of protein serve to influence specific protein activities. Different sequences of amino acids form different shapes and thus, different proteins. All protein activity is based on these four structures: … See more

    Taking A Closer Look at Peptides

    The term protein denotes molecules with >50 combined amino acids. Each protein contains one or more polypeptide … See more

    Chemical Bonding in Proteins

    The amino acids' interactions cause a protein to fold into its mature shape (tertiary). Such folding happens because of the rotation of bonds within the amino acids, as well as bonds joining various amino acid… See more

    Protein Denaturation

    Protein denaturation occurs when the three-dimensional structures (in secondary, tertiary, or sometimes quaternary structures) of proteins is altered. Denaturation makes protein non-functional, or at least … See more

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  1. Protein - Wikipedia

  2. Protein: Why Your Body Needs It - WebMD

  3. Proteins - Nutrition.gov

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