Q: 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.
Tetrameric species of E . coli RdgC , which started to form at around 2 micro M concentrations , were speculated to be the species with the most potent inhibitory effect , possibly by having a higher affinity for DNA ( 1 ) .
A:
E . coli