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.

 Furthermore , we have identified the major open reading frame ( RF4 ; 2 . 3 kb ) as being essential for activation , and we have shown that the NF kappa B , SP1 , and TATA box motifs in the human immunodeficiency virus LTR are all required for full induction of the promoter by the HHV - 6 - encoded transactivator .
NF kappa B

 The biological activity of these mutants was tested by determining their capacity to ( i ) reconstitute RNA polymerase activity in vivo by cotransfection with proteins NP , PB1 , and PA and a virion - like RNA encoding the cat gene into vaccinia virus T7 - infected COS - 1 cells and ( ii ) complete with the wild - type PB2 activity .
RNA polymerase

 Both merR genes consist of a 408 bp ORF coding for 135 amino acids .

merR genes

