Amino acids have three groups, an amino
group, a carboxylic acid group and a side chain or R
group.
There are 20 different amino acids. Each has a
different side chain.
It is the side groups on amino acids that interact
and result in the overall tertiary
structure of proteins.
The amino and acid ends are affected by pH and this
is one reason why enzymes work
best at an optimum pH.
The bond formed between two amino acids is a peptide
bond.
The variety of ways that the 20 amino acids can be
connected together gives proteins their great variety
and range of functions.
The three-dimensional shape of a protein molecule.A condensation reaction forms a new bond between the amino end of one amino acid and the acid end of the other.
