Amino Acids-DEFINATELY MEMORIZE EACH AMINO ACID, THE ABBREV, THE LETTER,
AND HOW IT LOOKS, WHAT MAKES IT DIFFERENT AS WELL!
3.1 proteins are built from a repertoire of 20 amino acids
-α-amino acid consists of an α-carbon, linked to an amino group, a carboxylic acid group,
a hydrogen atom and a side chain (R group)
- α amino acids are chiral meaning they exist in 2 mirror image forms called L isomer
and D isomer.
-only L amino acids are made of proteins.
-Free amino acids exist as dipolar ions/zwitterions, the amino group is protonated, and
the carboxyl group is deprotonated (COO-)
-in acidic: amino group is protonated, and carboxyl group is not dissociated.
-pH rises, carboxylic acid gives up a proton, and its dipolar until pH of 9, where amino
acid loses a proton.
3.2 Amino Acids contain a wide array of functional groups
- 20 different side chains that diff