In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Previous analysis of this motif in the lactose permease ( A .
lactose permease

The aromatic hydrocarbon receptor ( AHR ) is a ligand - activated transcription factor that regulates the expression of several drug - metabolizing enzymes and has been implicated in immunosuppression , teratogenesis , cell - specific hyperplasia , and certain types of malignancies and toxicities .
aromatic hydrocarbon receptor

The gamma - GCS gene is expressed ubiquitously and induced coordinately with NAD ( P ) H : quinone oxidoreductase ( 1 ) ( NQO1 ) and glutathione S - transferase Ya ( GST Ya ) in response to xenobiotics and antioxidants .
GST Ya