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.

 Rap1p was expressed in Escherichia coli BL21 ( DE3 ) from pL3S5 , a pET vector carrying the RAP1 gene downstream of a T7 promoter ( 26 ) .
Escherichia coli

 Recently , sequences that could block the spread of silent chromatin have been discovered in S . cerevisiae ( 7 , 8 ) .
S . cerevisiae

 Moreover , we demonstrate a role for sustained TNF - alpha production in the maintenance of host survival throughout the course of B . mallei infection .

B . mallei