Assertion: amino acid's group | /r/CapableOf | call an –r group
Facets:
Source sentences:
text: Each amino acid (see the left illustration in Figure 2-4) has an amino (–NH 2 ) group, a carboxyl (–COOH) group, and a group of atoms called an –R group (where R stands for radical).
text: The variable group, also called the R group or side chain, determines the identity and many of the properties of a specific amino acid.