Proteins

Function

structural/mechanical functions, act as enzymes, catalyze reactions

Primary Structure

Sequence of amino acids

Secondary Structure

folding at the chain due to h-bonding between peptide bones, r-groups affect structure in this case, result is either an a-helix or b-pleated sheet

Tertiary Structure

folding of helix/sheet - this is influenced by nature of side (R) group and is the result of hydrogen bonds, ionic bonds, and disulfide bridges

How does primary structure dictate tertiary structure?

Through chemical interactions between individual side chains(R groups)

Quaternary Structure

different polypeptides interacting

Denaturing

temperature/pH changes, proteins can unravel