More Organic Chemistry: Proteins and DNA. Proteins. Enzymes Structural proteins Storage proteins Transport proteins Hormones Receptors Contractile proteins Defensive proteins. Amino Acids. Amino Acids. amino. N. Amino Acids. amino. O. N. C. O. acid. Amino Acids. amino. O. N. - PowerPoint PPT Presentation
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More Organic Chemistry:
Proteinsand 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 C C
O
O
amino
Amino Acids
acid
N C C
O
O
R
H
NH2—C—COOH
R
Amino Acids
20 different amino acids:
• Polar or nonpolar
• Electrically charged or not.
Amino Acids
Peptide Bonds
Peptide Bonds
Peptide Bonds
Peptide Bonds
Peptide Bonds
Peptide Bonds
Peptide Bonds
• Primary
• Secondary
• Tertiary
•Quaternary.
Levels of Structure:
Primary 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 StructureChapter One
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.
Tertiary Structure
Quaternary Structure
Primary Structure
Secondary Structure
Tertiary Structure
Quaternary Structure
Protein Structure
Protein Structure
Mutant Proteins
Denatured Proteins
Nucleic Acids
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.