Different R group structures give rise to different properties 2019 Amino acids

Different r group structures give rise to different

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Different R-group structures give rise to different properties
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© 2019 Amino acids are linked together into peptides F-30 ________ group of one amino acid reacts with _________ group of another a.a. to form a ________ bond through a ____________ reaction. Each linear peptide has ONE ________ end and ONE __________ end.
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© 2019 Some R-groups are hydrophobic F-29 For example, in folded proteins, hydrophobic amino acids are found on the How does this compare with phospholipid bilayers, micelles, etc.? DO NOT waste time memorizing structures or names, but DO try to understand from a structure WHY an amino acid side chain has certain properties. R-groups = ___________
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© 2019 Some R-groups are Hydrophilic F-29 In folded proteins, hydrophilic amino acids are found on the Some = acids , which ______ a proton at physiological pH to become charged - contain one or more O, N or charged atoms = Some = bases , which ______ a proton at physiological pH to become charged
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© 2019 Amino acid polymers “fold” into proteins Peptide – Polypeptide – Proteins – General name for a polymer of amino acids Peptide of _______ amino acids Polypeptide that is ”folded” into a complex 3D shape
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© 2019 Levels of Protein Structure Primary (1º) – Secondary (2º) – Tertiary (3º) – Quaternary (4º) – F-31 __________ sequence of amino acids Formation of ________ and _________ due to H-bonds in “backbone” “folded” ____ shape of protein Arrangement of _________ polypeptide chains into a 3D arrangement
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  • Spring '14
  • Ng, Topic 4a

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