BB lecture 9-19 proteins

BB lecture 9-19 proteins - Chapter 5 continued The...

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For Proteins… Know the elements of typical proteins Be able to draw the basic amino acid molecule Explain how amino acids may be grouped according to the R group properties Describe the building-block molecules, structure, and biological roles of proteins Identify the peptide bond and describe how it is formed Know the forces responsible for protein configurations as primary, secondary, tertiary and quaternary structures Terms to know include…polypeptides, disulfide bridge, pleated sheet, helix, denaturation/renaturation, chaperonins… Chapter 5 continued – The structure and function of macromolecules (aka biomolecules) As before… Learning objectives: List the four major classes of macromolecules Be able to describe each type of macromolecule in terms of: Elemental composition, molecular structure/subunits, and function(s) Distinguish between monomers and polymers Be able to recognize and illustrate condensation rx and hydrolysis rx
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Amino Acids are Monomers Amino acids Have both carboxyl and amino functional groups “R” components on side chains determine properties Polypeptides Are polymers of amino acids A protein Consists of one or more polypeptides
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20 different amino acids make up proteins O O H H 3 N + C C O O H CH 3 H 3 N + C H C O O CH 3 CH 3 CH 3 C C O O H H 3 N + CH CH 3 CH 2 C H H 3 N + CH 3 CH 3 CH 2 CH C H H 3 N + C CH 3 CH 2 CH 2 C H 3 N + H C O O CH 2 C H 3 N + H C O O CH 2 NH H C O O H 3 N + C CH 2 H 2 C H 2 N C CH 2 H C Nonpolar Glycine (Gly) Alanine (Ala) Valine (Val) Leucine (Leu) Isoleucine (Ile) Methionine (Met) Phenylalanine (Phe) C O O Tryptophan (Trp) Proline (Pro) H 3 C Figure 5.17 S O O
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O OH CH 2 C C H H 3 N + O O H 3 N + OH CH 3 CH C C H O O SH CH 2 C H H 3 N + C O O H 3 N + C C CH 2 OH H H H H 3 N
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This note was uploaded on 10/06/2010 for the course BIO 311C taught by Professor Satasivian during the Fall '08 term at University of Texas at Austin.

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BB lecture 9-19 proteins - Chapter 5 continued The...

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