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]: Vertebrate U6 small nuclear RNA ( snRNA ) loci exemplify a novel class of polymerase III - transcribed genes that lack an intragenic control region ( ICR ) .
[EX A]: polymerase III

[EX Q]: Interestingly , VDR was able to bind to VDREs with high affinity and to fully activate transcription in intact yeast cells in the presence of the retinoid X receptor ( RXR ) .
[EX A]: retinoid X receptor

[EX Q]: Antibodies specific to the different members of the Jun and Fos family of transcription factors show that , in gel retardation assays , a Jun - like factor is a component of the H3 . 2 specific complex .
[EX A]:
Fos family