Bio lecture 7 - Bio lecture 7 (9/21/11) Polypeptides is...

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Bio lecture 7 (9/21/11) Polypeptides is sometimes = proteins Be able to draw cysteine and glycine Peptide bonds link together amino acids N terminus end has amino groups C terminus end has carboxyl groups o Grows from N to C A proteins function depends on its conformation (shape) o Configuration determined by number and sequence of amino acids o Shapes always make an “active site” where a substrate is acted upon Substrate- Reactant 4 levels of protein structure o Primary structure- amino acid sequence (determined by DNA) includes the number of amino acids and something else? o secondary Structure- motifs- structures within overall strand that spontaneously forms o Tercerary structure- overall shape of protein (3-D shape) o Quaternary structure- if more than 1 polypeptide, it makes final functional protein Only has quaternary structure if there are multiple polypeptides/subunits 1 polypeptide can make a functional protein. Therefore it can be interchanged in
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This note was uploaded on 10/06/2011 for the course BIO 161 taught by Professor Urbance during the Spring '11 term at Michigan State University.

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Bio lecture 7 - Bio lecture 7 (9/21/11) Polypeptides is...

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