Cysteine and resistance to oxidative stress: implications for virulence and antibiotic resistance

A Tikhomirova, MM Rahman, SP Kidd, RL Fererro… - Trends in …, 2024 - cell.com
Reactive oxygen species (ROS), including the superoxide radical anion (O 2•–), hydrogen
peroxide (H 2 O 2), and the hydroxyl radical (• HO), are inherent components of bacterial …

Detection of Streptococcus pyogenes M1UK in Australia and characterization of the mutation driving enhanced expression of superantigen SpeA

MR Davies, N Keller, S Brouwer, MG Jespersen… - Nature …, 2023 - nature.com
A new variant of Streptococcus pyogenes serotype M1 (designated 'M1UK') has been
reported in the United Kingdom, linked with seasonal scarlet fever surges, marked increase …

Interplay between group A Streptococcus and host innate immune responses

MSW Su, YL Cheng, YS Lin, JJ Wu - Microbiology and Molecular …, 2024 - Am Soc Microbiol
SUMMARY Group A Streptococcus (GAS), also known as Streptococcus pyogenes, is a
clinically well-adapted human pathogen that harbors rich virulence determinants …

A newly identified flavoprotein disulfide reductase Har protects Streptococcus pneumoniae against hypothiocyanous acid

HL Shearer, PE Pace, JC Paton, MB Hampton… - Journal of Biological …, 2022 - ASBMB
Hypothiocyanous acid (HOSCN) is an antimicrobial oxidant produced from hydrogen
peroxide and thiocyanate anions by heme peroxidases in secretory fluids such as in the …

Emerging roles of low-molecular-weight thiols at the host–microbe interface

DG Dumitrescu, SK Hatzios - Current Opinion in Chemical Biology, 2023 - Elsevier
Abstract Low-molecular-weight (LMW) thiols are an abundant class of cysteine-derived
small molecules found in all forms of life that maintain reducing conditions within cells. While …

[HTML][HTML] Resisting death by metal: metabolism and Cu/Zn homeostasis in bacteria

MJ Sullivan, I Terán, KGK Goh… - Emerging Topics in Life …, 2024 - portlandpress.com
Metal ions such as zinc and copper play important roles in host–microbe interactions and
their availability can drastically affect the survival of pathogenic bacteria in a host niche …

The neutrophil oxidant hypothiocyanous acid causes a thiol-specific stress response and an oxidative shift of the bacillithiol redox potential in Staphylococcus aureus

VV Loi, T Busche, F Schnaufer, J Kalinowski… - Microbiology …, 2023 - Am Soc Microbiol
During infections, Staphylococcus aureus is exposed to hypochlorous acid (HOCl) and
hypothiocyanous acid (HOSCN), which are produced by the neutrophil myeloperoxidase as …

Listeria monocytogenes GshF contributes to oxidative stress tolerance via regulation of the phosphoenolpyruvate-carbohydrate phosphotransferase system

M Chen, J Zhang, J Xia, J Sun, X Zhang… - Microbiology …, 2023 - Am Soc Microbiol
Glutathione (GSH) is an essential component of the glutaredoxin (Grx) system, and it is
synthesized by the enzyme glutathione synthase GshF in Listeria monocytogenes. GSH …

The glutathione import system satisfies the Staphylococcus aureus nutrient sulfur requirement and promotes interspecies competition

JM Lensmire, MR Wischer, C Kraemer-Zimpel… - PLoS …, 2023 - journals.plos.org
Sulfur is an indispensable element for bacterial proliferation. Prior studies demonstrated that
the human pathogen Staphylococcus aureus utilizes glutathione (GSH) as a source of …

Host-mediated copper stress is not protective against Streptococcus pneumoniae D39 infection

SL Neville, BA Cunningham, EA Maunders… - Microbiology …, 2022 - Am Soc Microbiol
Metal ions are required by all organisms for the chemical processes that support life.
However, in excess they can also exert toxicity within biological systems. During infection …