Bacterial Genetics and Biotechnology

This study presents cryo-EM structures of σ54 with increasing RNA length, revealing the mechanism of σ54 displacement and promoter escape during bacterial transcription initiation.

The paper demonstrates plasmid addiction via toxin-antitoxin systems by showing post-segregational killing at the single-cell level using meganuclease-driven plasmid curing.

The paper demonstrates that integron integrase can insert cassettes outside classical att sites, leading to new recombination sites called attG and expanding integron roles in bacterial evolution.

This study identifies c-di-AMP's role in beta-lactam tolerance in Group B Streptococcus by coordinating osmotic regulation and cell envelope stress responses.

The paper identifies adenine as a cross-fed metabolite between Rhodopseudomonas palustris and E. coli, revealing a purine salvage bottleneck mechanism.

This study shows that c-di-AMP modulates antibiotic sensitivity in M. smegmatis by interacting with protein effectors or mRNA 5-UTR regions, leading to differential drug resistance.

This study identifies eight new subtypes of the type VII secretion system in Gram-positive bacteria, revealing unexpected diversity in their composition and potential functions.

This study shows that cross-feeding and spatial structure in bacterial communities can lead to increased antibiotic persistence in E. coli through 'dynamical loss of access to nutrient'.

The paper develops modular genetic tools for manipulating diverse diazotrophic bacteria to enable synthetic biology and genome editing.

The paper shows that plasmid length distributions are often misinterpreted due to logarithmic scaling, revealing that log-length distributions can be bimodal while length distributions are unimodal across all plasmids.

The paper reports the crystal structure of FlrB's PAS domain and identifies heme as a sensory ligand, showing synergistic binding with ATP to regulate flagellar gene transcription in Vibrio cholerae.

This study maps the Hfq-mediated RNA interactome in nitrogen-starved E. coli, revealing SdsR's role in post-transcriptional regulation during long-term growth arrest and recovery.

The paper shows SwrA extends DegU binding over a UP element to activate flagellar gene expression in Bacillus subtilis, enabling motility and swarming.

The paper identifies chemotaxis to human serum as a mechanism enabling Enterobacteriaceae to invade bloodstream infections, termed 'bacterial vampirism'.

The paper introduces Toxinome, a comprehensive database of bacterial protein toxins and antitoxins, revealing their distribution, depletion in extreme temperature bacteria, and identification of toxin-rich genomic regions called Toxin Islands.

The paper identifies a new class of T7SS effector, TslA, with a reverse domain arrangement and describes its secretion mechanism and functional properties.

This paper shows that GrgA is essential for Chlamydia growth, plasmid maintenance, and differentiation, and identifies its role in regulating sigma factors and gene expression.

This paper develops genetic tools for Acholeplasma laidlawii to enable synthetic genome-based strain engineering.

This paper shows that the small protein MntS evolved from a signal peptide and regulates manganese homeostasis by inhibiting the MntP transporter and self-interacting in the presence of manganese.

This study shows that OmpR in Klebsiella pneumoniae regulates virulence and lung infection by controlling key virulence factors and eliciting a strong host transcriptional response.

This study uses single-molecule fluorescence to show that SecYEG dynamically couples with SecA through energy landscape steering, enhancing protein translocation efficiency.

The paper develops PIC-seq to study RNA polymerase dynamics in Salmonella during infection, finding increased RNAP backtracking and its role in virulence.

The paper measures antibiotic-mediated bacterial death and finds death rate is linear with growth rate but varies with environmental stress.

The paper shows that E. coli YidC forms an ion-conducting pore when bound to a ribosome or ribosome-nascent chain complex, suggesting an alternative mechanism for membrane protein insertion.

The paper presents the cryo-EM structure of the FtsEX-EnvC complex from V. cholerae and shows how EnvC's conformational changes regulate amidase activity for septal peptidoglycan hydrolysis.

This study identifies genes and pathways in B. fragilis that affect its fitness in bile acids, using a barcoded mutant library and transcriptomic analysis.

The paper shows that the switch of PleC from phosphatase to kinase activity, regulated by PodJ interaction, controls the timing of cell differentiation in Caulobacter crescentus.

This study investigates the molecular dynamics of persister formation in Staphylococcus aureus under vancomycin and enrofloxacin exposure, revealing stress-specific molecular profiles and the potential of combined therapies.

This paper identifies an inhibitor/anti-inhibitor system in Pseudomonas aeruginosa that regulates the lytic transglycosylase MltF, affecting antibiotic resistance and cell wall homeostasis.

The paper uses mass spectrometry to study the kinetics of Braun lipoprotein (Lpp) tethering to peptidoglycan (PG) and its hydrolysis, revealing dynamic equilibrium between PG-tethered and free Lpp forms.