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.

Input: Consider Input: 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 .

Output: P / CAF

Input: Consider Input: Accelerated spontaneous thymocyte death in the absence of TCF - 1 correlates with aberrantly low expression of the anti - apoptotic protein Bcl - x ( L ) .

Output: TCF - 1

Input: Consider Input: BAP / TFII - I , a protein implicated in transcriptional regulation , is associated with Btk in B cells and is transiently phosphorylated on tyrosine following B cell receptor engagement .
Output: B cell receptor