BIOL2000 Lecture Notes - Lecture 3: Prentice Hall, Chemical Polarity, Alpha And Beta Carbon
Document Summary
In ph 7, lysine (nh3+ r group) could form a hydrogen bond or an ionic bond (salt bridge) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) The 20 major amino acids differ only in the variable side chain or r group attached to the central carbon: groups differ in their size, shape, reactivity, and interactions with water and other molecules (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) Hydrolysis is when water reacts with a polymer to release a monomer (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) Why amide bonds: amide bonds are planar, which allows intrastrand h bonding, are also chemically stable (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (cid:2) (carboxyl group + amino group = peptide bond) Example: sickle cell: hemoglobin tends to crystallize when glutamate is changes to valine (cid:2) (cid:2) (cid:2) (cid:2)
