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]:  Activation of the cytotactin promoter by the homeobox - containing gene Evx - 1 .
[EX A]: cytotactin promoter

[EX Q]:  Transcriptional activation of the proopiomelanocortin gene by cyclic AMP - responsive element binding protein .
[EX A]: proopiomelanocortin gene

[EX Q]:  In vitro death assays with transient overexpression of deletion constructs of both isoforms using beta - galactosidase as a reporter gene in MCF7 cells suggest the following : 1 ) the nucleotide binding domain may act as a negative regulator of the killing activity of DEFCAP ; 2 ) the LRR / CARD represents a putative constitutively active inducer of apoptosis ; 3 ) the killing activity of LRR / CARD is inhibitable by benzyloxycarbonyl - Val - Ala - Asp ( OMe ) - fluoromethyl ketone and to a lesser extent by Asp - Glu - Val - Asp ( OMe ) - fluoromethyl ketone ; and 4 ) the CARD is critical for killing activity of DEFCAP .
[EX A]:
beta - galactosidase