operon article 26 nonhuman 20 priority journal 16 Bacteria (microorganisms) 12 Transcription, Genetic 12 Gene Expression Regulation, Bacterial 10 Negibacteria 10 Operon 10 beta galactosidase 10 escherichia coli 10 promoter region 10 transcription regulation 10 Base Sequence 8 Binding Sites 8 Brucella 8 Brucella abortus 8 Brucella melitensis biovar Abortus 8 DNA, Bacterial 8 Escherichia coli 8 Genes, Bacterial 8 Transcription Factors 8 VirB protein 8 binding site 8 deoxyribonuclease I 8 nucleotide sequence 8 Molecular Sequence Data 6 Protein Binding 6 Xanthomonas 6 biosynthesis 6