PROTEINS

Proteins Macromolecules that contain N, C, H, & O Polymers of molecules called amino acids Amino acids are the building blocks of proteins 20 different amino acids found in nature

Amino Acids All have an amino group All have a “R” group All have a Carboxyl group

Amino Acids Amino Group (-NH2)

Amino Acid “R” Group

Amino Acids

Amino Acids Carboxyl group (-COOH)

Classes of Protein Enzymes Defense Storage Signal Contractile Transport Structural

Enzymes # 1 Protein Proteins that act as biological catalyst Catalyst – substance that speeds up the rate of chemical reaction without being used up.

Enzymes Negative effects on enzymes pH Temperature Most enzymes produced by the human body work best at 37oC

Enzymes Play essential roles in regulating chemical pathways, making materials that cells need, releasing energy, and transferring information.