lecture 16 - BIO 311C February 25, 2008 Kinds of Bonds that...

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Unformatted text preview: BIO 311C February 25, 2008 Kinds of Bonds that May Form Between Different R-Groups When a polypeptide chain Bends Around in Various Ways Covalent bond (Disulfide bond) Polar Bonds Hydrogen bonds Electrovalent (ionic) bonds Hydrophobic bonding * From textbook Fig. 5.20, p 83 Representations of the Shape of a Protein that Contains a Single Polypeptide Chain Ribbon model Space-filling model The three-dimensional shape of a polypeptide chain that is folded in some manner is called its tertiary structure . From Fig. 5.19, p. 81, of textbook * The secondary structure and tertiary structure of a polypeptide chain are determined by its primary structure. Thus, each different polypeptide chain with its unique sequence of amino acids also has its own unique size and 3-dimensional shape. The ribbon structure of ribonuclease is shown here folded into its native conformation. It serves as an enzyme when in this conformation. The 3-dimensional shape of a molecule is called its conformation . A polypeptide chain that is folded into its normal, functional conformation is said to in its native conformation ....
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This note was uploaded on 03/23/2008 for the course BIO 311C taught by Professor Satasivian during the Spring '08 term at University of Texas at Austin.

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lecture 16 - BIO 311C February 25, 2008 Kinds of Bonds that...

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