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.

[Q]:  Inhibition of PA in both cell types is specific for active glucocorticoids , and this specificity parallels the ability of various steroids to bind to glucocorticoid receptors .
[A]: glucocorticoid receptors


[Q]:  One of these sequences forms a protein complex , NFAT - 1 , specifically with nuclear extracts of activated T cells .
[A]: NFAT - 1


[Q]:  Here we show that STAT5A can serve as a functional substrate of Bruton ' s tyrosine kinase ( BTK ) .
[A]:
tyrosine kinase