BIOCHM 1090 Lecture Notes - Lecture 17: Zwitterion, Stereochemistry, Proline
Document Summary
1. they provide structure (keratin) and support (actin laments) to tissues and organs throughout our bodies: as hormones (oxytocin) and enzymes (catalase), they control aspects of metabolism. 3. in body uids, water-soluble proteins pick up other molecules for storage (casein) or transport (transferrin: proteins of the immune system provide of the immune system provide protection against invaders, such as bacteria and viruses. 4. transport proteins: carry substances through body uids: structural proteins: provide mechanical shape and support, protective proteins: defend the body against foreign matter, contractile proteins: do mechanical work. Amino acids: proteins: polymers of amino acids, every amino acid contains an amine group, a carboxyl group, and an r group called a side chain, bonded to a central carbon atom. 2. for 19 of these amino acids, only the identity of the side chain attached to the carbon differs.
