More Organic Chemistry: Proteins and DNA

Proteins Enzymes Structural proteins Storage proteins Transport proteins Hormones Receptors Contractile proteins Defensive proteins.

Amino Acids

amino Amino Acids N

amino Amino Acids acid N C O O

amino Amino Acids acid N CC O O

amino Amino Acids acid N CC O O R

H NH 2 —C—COOH R Amino Acids

20 different amino acids: Polar or nonpolar Electrically charged or not. Amino Acids

Peptide Bonds

Primary Secondary Tertiary Quaternary. Levels of Structure:

Primary Structure

in a hole in the ground there lived a hobbit not a nasty dirty wet hole filled with the ends of worms and an oozy smell nor yet a dry bare sandy hole with nothing in it to sit down on or to eat it was a hobbit hole and that means comfort

Secondary Structure Chapter One I n a hole in the ground there lived a hobbit. Not a nasty, dirty, wet hole, filled with the ends of worms and an oozy smell, nor yet a dry, bare, sandy hole with nothing in it to sit down on or to eat: it was a hobbit-hole, and that means comfort.

Tertiary Structure

Quaternary Structure

Primary Structure

Secondary Structure

Tertiary Structure

Quaternary Structure

Protein Structure

Mutant Proteins

Denatured Proteins

Nucleic Acids

Concept Check Questions Why does a denatured protein no longer function normally?

Concept Check Questions A genetic mutation may change a protein’s primary structure. Why does this destroy the protein’s function?

Concept Check Questions In a DNA double helix, one strand has the sequence: 5’-TAGGCCT-3’ List the sequence along the other strand, clearly indicating 3’ and 5’ ends of the strand..