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.

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

[EX Q]: For this purpose , it was necessary to set up an electroporation protocol adapted to S . tuberosum mitochondria .
[EX A]: S . tuberosum

[EX Q]: This observation is consistent with the results of previous gel filtration and sedimentation equilibrium experiments , which suggested the presence of dimeric species of E . coli RdgC in solution ( 1 , 2 ) .
[EX A]:
E . coli