Results 81 to 90 of about 114,748 (203)

Oral and Pancreatobiliary Microbiota in Cancer: A Systematic Review of Compositional Alterations and Their Clinical Implications

Journal of Oral Pathology &Medicine, EarlyView.
ABSTRACT Background Associations between microbial dysbiosis and malignancies of the pancreatobiliary system have been described in recent studies. As a result of the limited number of studies that have been done specifically on the malignancies of the biliary tract, information regarding oral, biliary and tumour‐related microbial alterations was ...
Esperouz Fariba, Villani Rosanna, Ciavarella Domenico, Serviddio Gaetano, Lorusso Mauro, Lo Russo Lucio   +5 more
wiley   +1 more source

Effects of Algae β‐Glucan Supplementation on the Performance and Intestinal Immune System of Healthy Weaned Piglets

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT While β‐glucans from plants and yeasts have been extensively studied in weaned piglets, studies examining algae β‐glucans are scarce. Thus, the present study aimed to examine the effects of feeding algae β‐glucan in weaned piglets. Male, 21‐day‐old, weaned crossbred piglets were allotted to three experimental groups, which were fed either an ...
Johanna O. Buckenberger, Felizitas Gutöhrlein, Manfred Henrich, Erika Most, Rose Whelan, John K. Htoo, Robert Ringseis, Klaus Eder   +7 more
wiley   +1 more source

Protein STM3547 From Salmonella typhimurium Is a Phosphofructose Kinase B‐Type Enzyme With Ribose Kinase Activity

Molecular Microbiology, EarlyView.
The metabolism of ribose starts with the phosphorylation of its 5′ hydroxyl group. Salmonella typhimurium has two kinases that perform this function, namely ribose rinase (RbsK) and deoxyribose kinase (DeoK). Here we report a new ribose kinase that we named RikA. The illustration was partially created in BioRender.
Regan D. McCormick, Aatif A. Jabbar, Jorge C. Escalante‐Semerena   +2 more
wiley   +1 more source

To Move or Not to Move: When and How Bacteria Suppress Flagellar Motility

Molecular Microbiology, EarlyView.
Motility cessation in bacteria is a key regulatory strategy that provides multiple survival advantages including enhanced community cooperation, niche adaptation and evasion of host immune responses. This process is controlled by associated mechanisms such as post‐translational modifications and second messenger signalling that stabilise non‐motile ...
Fatemeh Mohaghegh, Jacob Scadden, Matthew A. B. Baker   +2 more
wiley   +1 more source

Roles of PknB and CslA in Cell Wall Morphogenesis of Streptomyces

Molecular Microbiology, EarlyView.
Streptomyces grow by extending hyphal tips, a process regulated by polarisome complexes anchored by DivIVA. Using a genetic screen based on toxic DivIVA overproduction, we identified the kinase PknB as a key regulator of cell envelope construction.
Marta Derkacz, Andrew Watson, Akshada Gajbhiye, Michał Tracz, Dagmara Jakimowicz, Matthias Trost, Jeff Errington, Bernhard Kepplinger   +7 more
wiley   +1 more source

Chain‐Length Regulation by WzzE Is Necessary for, but Genetically Separable From, Cyclic Enterobacterial Common Antigen Synthesis

Molecular Microbiology, EarlyView.
Here, we demonstrate that polysaccharide chain length regulation plays a distinct role in enabling formation of a cyclic molecule important for the bacterial cell surface. However, this function is necessary, but not sufficient for the cyclic molecule's biosynthesis.
Joseph F. Carr, Yohannes H. Rezenom, Jennifer S. Rudolf, Daniel J. Warzecha, Angela M. Mitchell   +4 more
wiley   +1 more source

Elucidating the Staphylococcus aureus TSST‐1 Regulatory Network as a Response to Vaginal pH

Molecular Microbiology, EarlyView.
Toxic shock syndrome toxin‐1 (TSST‐1) is a potent Staphylococcus aureus superantigen responsible for menstrual toxic shock syndrome (mTSS). Regulation of TSST‐1 is controlled by multiple systems including the stand‐alone transcriptional regulators CcpA and SarA and two‐component systems including the redox sensor SrrAB, the membrane stress sensor SaeRS,
Carla S. Maduta, Nicholas R. Walton, Emily P. Barbosa, Erica N. DeJong, Karine Dufresne, John K. McCormick   +5 more
wiley   +1 more source

A Single‐Nucleotide Substitution Generates a de Novo Promoter That Activates a Latent Metabolic Bypass in Escherichia coli

Molecular Microbiology, EarlyView.
A chromosomal mutation allows bypass of deletion of the Escherichia coli fabH gene. The bypass results from creation of a new promoter that drives increased madA transcription, resulting in increased synthesis of acetyl‐acyl carrier protein by decarboxylation of malonyl‐acyl carrier protein.
Qiaoqiao Guo, Qi Zou, Jilong Qin, Makrina Totsika, Yaoqin Hong, John E. Cronan   +5 more
wiley   +1 more source

A Nutrient‐Responsive LuxR Regulator Orchestrates Effector Gene Expression Across the Legionella Genus

Molecular Microbiology, EarlyView.
LexR1 is a LuxR‐type regulator that links nutrient sensing to effector gene expression in Legionella. Activated by a casamino acid‐derived ligand, LexR1 directly controls multiple effector genes using a conserved regulatory element present in numerous putative effectors across different Legionella species.
Chen Adler, Gil Segal
wiley   +1 more source

The 3D genome of Gigaspora margarita unveils stable chromatin and nucleolar organization and symbiont‐dependent genome dynamics

New Phytologist, EarlyView.
Summary Arbuscular mycorrhizal fungi (AMF) are widespread plant symbionts that enhance nutrient acquisition and influence ecosystem productivity. Previous chromosome‐level assemblies of the model species Rhizophagus irregularis revealed a two‐compartment genome architecture (active A and repressed B chromatin compartments), yet its conservation across ...
Ken Mugambi, Jordana Oliveira, Franco Magurno, Alessandra Salvioli di Fossalunga, Mara Novero, Luisa Lanfranco, Stefano Ghignone, Gökalp Yildirir, Yan Wang, Paola Bonfante, Nicolas Corradi   +10 more
wiley   +1 more source