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:  Macrophage stimulation with Murabutide , an HIV - suppressive muramyl peptide derivative , selectively activates extracellular signal - regulated kinases 1 and 2 , C / EBPbeta and STAT1 : role of CD14 and Toll - like receptors 2 and 4 .

A: C / EBPbeta
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Q:  We used several agents active on signal transduction pathways in cytokine expression , such as the protein kinase C inhibitor staurosporin , antioxidant agents including N - acetyl cysteine ( NAC ) and pyrrolidine dithiocarbamate ( PDTC ) , and p38 mitogen - activated protein kinase ( MAPK ) inhibitor SB203580 .

A: protein kinase C
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Q:  Current models propose that the functions of Ikaros should be disrupted by a small isoform that retains the dimerization domain and lacks the DNA - binding domain .

A:
dimerization domain
****