When anaerobes encounter oxygen: mechanisms of oxygen toxicity, tolerance and defence

Z Lu, JA Imlay - Nature reviews microbiology, 2021 - nature.com
The defining trait of obligate anaerobes is that oxygen blocks their growth, yet the underlying
mechanisms are unclear. A popular hypothesis was that these microorganisms failed to …

Prokaryotic Organelles: Bacterial Microcompartments in E. coli and Salmonella

KL Stewart, AM Stewart, TA Bobik - EcoSal Plus, 2020 - Am Soc Microbiol
Bacterial microcompartments (MCPs) are proteinaceous organelles consisting of a
metabolic pathway encapsulated within a selectively permeable protein shell. Hundreds of …

Pyruvate formate-lyase activating enzyme: The catalytically active 5′-deoxyadenosyl radical caught in the act of H-atom abstraction

MN Lundahl, H Yang, WE Broderick… - Proceedings of the …, 2023 - National Acad Sciences
Enzymes of the radical S-adenosyl-l-methionine (radical SAM, RS) superfamily, the largest
in nature, catalyze remarkably diverse reactions initiated by H-atom abstraction. Glycyl …

Type III secretion system effector YfiD inhibits the activation of host poly (ADP-ribose) polymerase-1 to promote bacterial infection

M Zhou, Y Liu, Y Zhang, Y Ma, Y Zhang… - Communications …, 2024 - nature.com
Modulation of cell death is a powerful strategy employed by pathogenic bacteria to evade
host immune clearance and occupy profitable replication niches during infection …

Development of in-line anoxic small-angle X-ray scattering and structural characterization of an oxygen-sensing transcriptional regulator

G Illava, R Gillilan, N Ando - Journal of Biological Chemistry, 2023 - ASBMB
Oxygen-sensitive metalloenzymes are responsible for many of the most fundamental
biochemical processes in nature, from the reduction of dinitrogen in nitrogenase to the …

Rescuing activity of oxygen-damaged pyruvate formate-lyase by a spare part protein

MC Andorfer, LRF Backman, PL Li, EC Ulrich… - Journal of Biological …, 2021 - ASBMB
Pyruvate formate-lyase (PFL) is a glycyl radical enzyme (GRE) that converts pyruvate and
coenzyme A into acetyl-CoA and formate in a reaction that is crucial to the primary …

[HTML][HTML] INAUGURAL ARTICLE by a Recently Elected Academy Member: Pyruvate formate-lyase activating enzyme: The catalytically active 5′-deoxyadenosyl …

MN Lundahl, H Yang, WE Broderick… - Proceedings of the …, 2023 - ncbi.nlm.nih.gov
Results Trapping the Organometallic Intermediate Ω During Reaction of PFL-AE, SAM and G-
pep. RFQ (Rapid freeze-quench) EPR measurements were carried out over a range of short …

Modeling the initiation phase of the catalytic cycle in the glycyl-radical enzyme benzylsuccinate synthase

M Szaleniec, G Oleksy, A Sekuła, I Aleksić… - The Journal of …, 2024 - ACS Publications
The reaction of benzylsuccinate synthase, the radical-based addition of toluene to a
fumarate cosubstrate, is initiated by hydrogen transfer from a conserved cysteine to the …

The Autonomous Glycyl Radical Protein GrcA Restores Activity to Inactive Full-Length Pyruvate Formate-Lyase In Vivo

M Kammel, RG Sawers - Journal of Bacteriology, 2022 - Am Soc Microbiol
During glucose fermentation, Escherichia coli and many other microorganisms employ the
glycyl radical enzyme (GRE) pyruvate formate-lyase (PflB) to catalyze the coenzyme A …

Activation of Glycyl Radical Enzymes─ Multiscale Modeling Insights into Catalysis and Radical Control in a Pyruvate Formate-Lyase-Activating Enzyme

M Hanzevacki, AK Croft, CM Jager - Journal of Chemical …, 2022 - ACS Publications
Pyruvate formate-lyase (PFL) is a glycyl radical enzyme (GRE) playing a pivotal role in the
metabolism of strict and facultative anaerobes. Its activation is carried out by a PFL …