Proteins. A look at emergent properties resulting from exquisite molecular order. Proteins: Many Functions. Proteins: Many Structures. The Amino Acid. Amino Acids. Basic structural unit = monomer COOH , NH 2 , and H atom give common structure
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A look at
emergent properties resulting from exquisite molecular order
The Amino Acid
(Gly,G) (Ala, A) (Ser, S) (Val, V)
Non-polar Non -polar Polar Non-Polar
A dehydration reaction between the carboxyl end of one amino acid and the amino end of an adjacent results in a peptide bond. Note the C-C-N-C-C-N pattern that develops.
1° - sequence of amino acids
2° - regular pattern of interactions between amino and carboxyl groupsSecondary Structure
Fig 5.20 -Lysozyme exhibits two secondary structures, -helix and the ß-pleated sheet.Both are due to hydrogen bonding.
4° -Interactions between two or more tertiary structures (2 or more amino acids chains)
Cystiene (Cys, C) + Cystiene (Cys, C)
OHQuiz! What kinds of kinds of interactions will these amino acids form?