BIOL213 Lecture Notes - Lecture 2: Iupac Nomenclature Of Organic Chemistry, Carboxylic Acid, Amine
Document Summary
Highly versatile: have properties that are well suited to carry out a variety of biological functions, capacity to polymerise (into peptides and proteins, useful acid-base properties, varied physical properties, varied chemical functionality. Amino acids share many features, differing only at the r substituent: the constant (r) region has, an acidic carboxyl group, a basic amino group, a hydrogen connected to the alpha-carbon. Amino acids: atom naming: organic nomenclature: start from one end, biochemical designation, start from alpha-carbon and go down the r group. All amino acids are chiral (except glycine: gly(cid:272)ine only has 3 different groups (cid:271)e(cid:272)ause of the h (cid:858) (cid:859) group therefore non (cid:272)hiral, proteins only contain l amino acids (l and d enantiomers) Characteristics: non polar aliphatic (7, side chains are hydrophobic. Modified amino acids in proteins: arise by post translational modifications of proteins (modification of aa already incorporated into protein, covalent modifications e. g. hydroxyproline, found in collagen.
