title: The repertoire of DNA-binding transcription factors in prokaryotes: functional and evolutionary lessons.
abstract: The capabilities of organisms to contend with environmental changes depend on their genes and their ability to regulate their expression. DNA-binding transcription factors (TFs) play a central role in this process, because they regulate gene expression positively and/or negatively, depending on the operator context and ligand-binding status. In this review, we summarise recent findings regarding the function and evolution of TFs in prokaryotes. We consider the abundance of TFs in bacteria and archaea, the role of DNA-binding domains and their partner domains, and the effects of duplication events in the evolution of regulatory networks. Finally, a comprehensive picture for how regulatory networks have evolved in prokaryotes is provided.
authors.affiliation: Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos 62100, Mexico. erueda@ibt.unam.mx
authors.forename: Ernesto
authors.initials: E
authors.lastname: Perez-Rueda
authors.forename: Mario Alberto
authors.initials: MA
authors.lastname: Martinez-Nuñez
mesh_terms: D001105:Archaea / Q000235:genetics* / Q000378:metabolism; D001419:Bacteria / Q000235:genetics* / Q000378:metabolism; D001665:Binding Sites; D005075:Biological Evolution; D004247:DNA / Q000235:genetics / Q000378:metabolism*; D019848:Gene Expression Regulation, Archaeal; D015964:Gene Expression Regulation, Bacterial; D053263:Gene Regulatory Networks; D020745:Genome, Archaeal; D016680:Genome, Bacterial; D011387:Prokaryotic Cells / Q000502:physiology*; D011485:Protein Binding; D017434:Protein Structure, Tertiary; D014157:Transcription Factors / Q000145:classification / Q000235:genetics / Q000378:metabolism*
chemical_list: D014157:Transcription Factors; D004247:DNA