Biology Proteins

Functions of proteins
1. antibodies
2. enzymes
3. growth and repair of cells
Structure of an Amino Acid
Condensation reaction (removal of water) forms bonds between molecules
1. bonds between proteins are called peptide bonds
Structure
1. Primary
  1. specific chain of amino acids
  2. depends on the order and number of amino acids
  3. gives it, it's specific function
  4. Stabilizing Factors
    1. Peptide Bonds
2. secondary
  1. alpha helix and beta pleated Sheet
  2. twist around each other
  3. Stabilizing Factors
    1. Hydrogen Bonds in Between molecules
3. tertiary
  1. Give enzymes their specific active site and shape
  2. Stabilizing Factors
    1. H-bonds
    2. Hydrophobic interactions
    3. Ionic Bonds
    4. disulfide Bridge
      1. Strongest
      2. S-H sistine
4. Quartenery
  1. Joining of many tertiary Structures (polypepitde subunits)
  2. might be non-proteins associated
    1. haemoglobin
Denaturation
1. Protein unravels and loses its native conformation

Resource summary

	Created by evie.daines over 8 years ago

	Copied by Emily Miller over 8 years ago