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Macromolecules. Proteins pp 39 - 44. Proteins. Proteins are used for: A mino acids. Amino Acids. Amino Acids in Aqueous Solutions. What are the acid / base properties of the amino acid functional groups?. Amino Acids. Essential vs. Non-essential Amino Acids. non-essential amino acids

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Presentation Transcript
Macromolecules

Macromolecules

Proteins

pp 39 - 44


Proteins
Proteins

Proteins are used for:

Amino acids.



Amino acids in aqueous solutions
Amino Acids in Aqueous Solutions

What are the acid / base properties of the amino acid functional groups?


Amino acids1
Amino Acids


Essential vs non essential amino acids
Essential vs. Non-essential Amino Acids

  • non-essentialamino acids

  • essentialamino acids


Peptides
Peptides

amide bond


Protein organization
Protein Organization

Four layers of protein organization:

  • primary (1°) structure

  • secondary (2°) structure

  • tertiary (3°) structure

  • quaternary (4°) structure


Primary 1 structure
Primary (1°) Structure


Secondary 2 structure
Secondary (2°) Structure


Tertiary 3 structure
Tertiary (3°) Structure

This provides the final 3-D protein structure.

Four major bond types between R groups:

  • H-bonding

  • ionic bonding

  • hydrophobic interactions

  • covalent bond (disulfide bridge)


Secondary 2 and tertiary 3 structure
Secondary (2°) and Tertiary (3°) Structure


Tertiary 3 structure1
Tertiary (3°) Structure


Quaternary 4 structure
Quaternary (4°) Structure


General protein shapes
General Protein Shapes

globular

fibrous


Protein properties
Protein Properties

Denature.

Vs.

Renaturation.




Protein organization1
Protein Organization

Protein Organization Video


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