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.

 Pax5 thus functions both as a transcriptional repressor and activator , depending on its interactions with corepressors of the Groucho protein family or with positive regulators such as the TATA - binding protein .
Groucho protein family

 The functional effects of these interactions are that CBP and p300 , but not P / CAF , enhance EKLF ' s transcriptional activation of the beta - globin promoter in erythroid cells .
P / CAF

 Since the effect of cortisol was additive to that of PgE2 and was not changed by phosphodiesterase inhibitors , it is conceivable that the hormone acts at a level different from the adenylate cyclase - phosphodiesterase system .

adenylate cyclase