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.

[EX Q]:  Transient transfection assays indicated that the ( - 4551 ) UCP1 - CAT construct , containing the 5 ' - regulatory region of the rat ucp - 1 gene , was activated by PPARalpha co - transfection in a dose - dependent manner and this activation was potentiated by Wy 14 , 643 and retinoid X receptor alpha .
[EX A]: retinoid X receptor

[EX Q]:  When expressed in Escherichia coli , SH - PTP2 displays tyrosine - specific phosphatase activity .
[EX A]: SH - PTP2

[EX Q]:  The detergent - solubilized complex oxidizes caldariella quinol at high rates and is completely inhibited by cyanide and by quinolone analogs , potent inhibitors of quinol oxidases .
[EX A]:
quinol oxidases