The Transcription Regulatory Function of LeuO Protein As part of the promoter relay mechanism , the expression of leuO is closely regulated at the chromosome site .
For the leuO locus , LeuO-mediated regulation involves the binding of the protein to the promoter region .
LeuO are involved in regulation of leuO .
To study LeuO-dependent regulation of SPI-1 in S. enterica serovar Typhimurium , transcription of the leuO gene was freed from H-NS repression by introducing a T-POP element upstream of leuO ( Fig .