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The proteins with lysin motif (LysM) are carbohydrate-binding protein modules that play a critical role in the host-pathogen interactions. The plant LysM proteins mostly function as pattern recognition receptors (PRRs) that sense chitin to induce the plant's immunity. In contrast, fungal LysM blocks chitin sensing or signaling to inhibit chitin-induced host immunity. In this review, we provide historical perspectives on plant and fungal LysMs to demonstrate how these proteins are involved in the regulation of plant's immune response by microbes. Plants employ LysM proteins to recognize fungal chitins that are then degraded by plant chitinases to induce immunity. In contrast, fungal pathogens recruit LysM proteins to protect their cell wall from hydrolysis by plant chitinase to prevent activation of chitin-induced immunity. Uncovering this coevolutionary arms race in which LysM plays a pivotal role in manipulating facilitates a greater understanding of the mechanisms governing plant-fungus interactions.
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http://dx.doi.org/10.3390/ijms22063114 | DOI Listing |
Nat Immunol
September 2025
Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China.
The transcription factor interferon regulatory factor 3 (IRF3) initiates type I interferon transcription, which is required for host defense. Here, we identify RAD18 as a central E3 ubiquitin ligase that selectively targets phosphorylated IRF3 (p-IRF3) for autophagic degradation. RAD18 specifically promotes the dissociation of p-IRF3 from the IFNB promoter and in turn terminates its transcriptional activity.
View Article and Find Full Text PDFGenes (Basel)
July 2025
School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia.
This study identifies and classifies resistance gene analogues (RGAs) in the genomes of , and using the RGAugury pipeline. RGAs were categorised into four main classes: receptor-like kinases (RLKs), receptor-like proteins (RLPs), nucleotide-binding leucine-rich repeat (NLR) proteins and transmembrane-coiled-coil (TM-CC) genes. A total of 4499 candidate RGAs were detected, with species-specific proportions.
View Article and Find Full Text PDFmBio
August 2025
School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom.
Invasive candidiasis, primarily caused by , poses a significant threat to immunocompromised patients, with high mortality rates. Understanding how immune responses to are mounted and controlled is fundamental to developing new therapeutic strategies. Protein tyrosine phosphatase 1B (PTP1B) is a regulator of immunoreceptor signaling and downstream inflammatory and metabolic responses and a pharmaceutical target.
View Article and Find Full Text PDFAllergy
August 2025
College of Veterinary Medicine, Biosafety Research Institute and Core Facility Center for Zoonosis Research, Jeonbuk National University, Iksan, Republic of Korea.
Background: Asthma exacerbations caused by human rhinovirus (hRV) infection are characterized by airway neutrophilia and reduced corticosteroid response, leading to significant healthcare costs and lung function impairment. The Gαs subunit of the trimeric G protein regulates immunopathological conditions by modulating cAMP levels. We aimed to investigate the impact of myeloid cAMP levels on neutrophil-dominated asthma exacerbation caused by hRV infection.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
August 2025
Department of Microbiology and Translational Data Analytics Institute, The Ohio State University, Columbus, OH.
The bacterial flagellum is a complex nanomachine essential for motility, environmental sensing, and host colonization. While many of its core components have been well characterized, the relevance of proteins such as FliO, which are inconsistently annotated and poorly conserved at the sequence level, has remained ambiguous in their evolutionary and functional status. Here, we present a comprehensive phylogenomic and structural analysis of FliO across >30,000 representative genomes spanning >100 bacterial phyla.
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