The DNA relaxation-dependent OFF-to-ON biasing of the type 1 fimbrial genetic switch requires the Fis nucleoid-associated protein

C Conway, MC Beckett, CJ Dorman - Microbiology, 2023 - microbiologyresearch.org
… and Lrp both influence fimS inversion in the same direction, … DNA supercoiling/relaxation,
Lrp and Fis in determining the … and DNA is negatively supercoiled links fim switch inversion

DNA supercoiling and transcription in bacteria: a two-way street

CJ Dorman - BMC molecular and cell biology, 2019 - Springer
… The translocation of the elongation complex overwinds the DNADNA binding proteins,
including IHF and LRP, cooperate with DNA supercoiling to set and to reset the genetic switch

CRISPR-Cas, DNA supercoiling, and nucleoid-associated proteins

CJ Dorman, NN Bhriain - Trends in microbiology, 2020 - cell.com
… factor, provide a basis for a stochastic genetic switch that acts at random in each cell in the
… its neighbours by copies of an inverted repeat; adaptation proteins integrate the spacers. …

Relationship between the Chromosome Structural Dynamics and Gene Expression—A Chicken and Egg Dilemma?

D Le Berre, S Reverchon, G Muskhelishvili, W Nasser - Microorganisms, 2022 - mdpi.com
… on the five major proteins H-NS, FIS, IHF, Lrp and HU, for which … of RNA polymerase or stall
its translocation, while in some … DNA supercoiling-dependent modulation of the directionality

Chromosomal Organization and Regulation of Genetic Function in Escherichia coli Integrates the DNA Analog and Digital Information

A Travers, G Muskhelishvili - EcoSal Plus, 2020 - Am Soc Microbiol
… the ordering is related to the directionality of DNA replication (18). … by translocation of the
transcription machinery along the DNALrp, like other DNA-binding proteins of the AsnC family, …

Type 1 fimbriae of Escherichia coli

P Klemm, KA Krogfelt - Fimbriae Adhesion, Genetics, Biogenesis …, 2020 - taylorfrancis.com
… of the fim genes encoding the structural proteins revealed that … found that lrp is required for
normal activity of the jim switch. … the direction of transcription) flanked by 9-bp inverted repeat …

The Fis Nucleoid Protein Negatively Regulates the Phase Variation fimS Switch of the Type 1 Pilus Operon in Enteropathogenic Escherichia coli

Z Saldaña-Ahuactzi, J Soria-Bustos… - Frontiers in …, 2022 - frontiersin.org
inversion of the fimS switch from the ON-to-OFF direction. It is … Lrp binds to two sites in or
near the fimS switch, where it acts … fimS switch of EPEC E2348/69 showed that this fim switch is …

[HTML][HTML] Physiological robustness of model Gram-negative bacteria in response to genome rewiring

CJ Dorman, MJ Dorman - Microbial Physiology, 2022 - karger.com
DNA supercoiling and nucleoid-associated proteins (NAPs) … , with small black arrows to
indicate the direction of transcription. … 2c) is not supported by these hns gene translocation data […

Flexible Metabolism and Suppression of Latent Enzymes Are Important for Escherichia coli Adaptation to Diverse Environments within the Host

CJ Alteri, SD Himpsl, AE Shea… - Journal of …, 2019 - Am Soc Microbiol
… Arrows indicate the direction of each reaction. (B to D) In vivo … IHF), and leucine-responsive
protein (LRP), in addition to the … intensity (total fim on and total fim off) to calculate the percent …

Type 1 fimbrial phase variation in multidrug-resistant asymptomatic uropathogenic Escherichia coli clinical isolates upon adherence to HTB-4 cells

A Ghosh, M Mukherjee - Folia Microbiologica, 2024 - Springer
… phase variation, determined by the fim switch analysis, … factors; H-NS, IHF, and Lrp on the
expression of FimB and FimE … phase switching, is caused by the inversion of a 314 bp DNA