Importantly , Hha has been shown to bind to the hilA promoter .
The hilA promoter is directly controlled by Hha .
Nevertheless , Hha was able to bind to the S. enterica hilA promoter with high affinity .
In spite of the fact that several reports have shown that Hha influences hilA expression , information is not yet available .
Hha mutants with a diminished positively charged surface can no longer regulate hilA .