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.

 The presence of a short ( 70 bp ) intron near the N - terminus of the atX gene was predicted that contains the canonical GT and AG dinucleotides at its 5 ' - and 3 ' - splicing junctions .
atX gene

 Glutathione reductase activities in liver , kidney , lung , and brain were not affected by diet .
Glutathione reductase

 In this respect , the promoter structure of COX genes resemble those of many house - keeping genes .

COX genes