Assertion: nitrogen's compound | /r/HasProperty | protein
Facets:
Source sentences:
text: root where a carboxyl group is released in exchange for a nitrate ion, whereas the newly assimilated N is incorporated primarily into leaf N compounds (protein) (Ismande and Touraine, 1994).
text: Nitrogen constitutes on the average about 16 percent by weight of the complex organic compounds known as proteins, present in all living organisms.
text: Those compounds might be proteins, enzymes, or nucleic acids.