Answer:
Glutamine, Ubiquitin Proteosomal system (UPS)
Step-by-step explanation:
In plants fixed nitrogen is assimilated into Glutamine.
In plants, inorganic nitrogen like nitrate or ammonium is transformed in primary nitrogen assimilation into glutamine & glutamate. This is not, however, the only way for plants to obtain nitrogen from environment.
The major route for protein degradation is Ubiquitin Proteosomal system (UPS)
Many intracellular proteins are reduced by ubiquitin-proteasome (UPS) system, a multi-enzyme complex process which involves covalent conjugation of ubiquitin to a substrate protein.