|Every amino acid has an
amino group ( -NH2 : blue, with 2 whites) and a
carboxylic acid group (-COOH : grey, with 2 reds and a white).
Each one also has a unique R group - 6 or 7 categories.
|valine - val||leucine - leu||isoleucine - ile||ALIPHATIC
These R groups are simple (linear) groups of carbon and hydrogen atoms
These R groups have an extra -OH group (red and white)
These R groups contain extra N atoms which contribute basic (alkaline) characteristics
These R groups have rings based on benzene
These R groups contain sulphur!
These R groups contain -COOH or - CONH2 groups
The >NH group (blue dot in the ring) makes this an imino acid, not an amino acid
(not a property of the R group)