TASK DEFINITION: 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.
PROBLEM:  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 .

SOLUTION: protein kinase C

PROBLEM:  Furthermore , the SH2 domain of p56 ( lck ) appeared to be required for pervanadate - induced NF - kappa B activation but not for Tyr42 phosphorylation .

SOLUTION: SH2 domain

PROBLEM:  The B - cell - type specificity of the immunoglobulin ( Ig ) heavy - chain and light - chain promoters is mediated by an octanucleotide ( OCTA ) element , ATGCAAAT , that is also a functional component of other RNA polymerase II promoters , such as snRNA and histone H2B promoters .

SOLUTION:
RNA polymerase II