Proteases
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Related Articles from SNS
A C-terminal Processing Protease Implicated in Flagellin Turnover and Developmental Progression in a Bacterial Predator
Carboxy-terminal processing proteases (CTPs) are widely conserved bacterial proteases implicated in protein maturation, quality control, and stress responses, yet many family members functions remain unclear. Here, we characterise Bd0967, a previously unstudied CTP from the predatory bacterium Bdellovibrio bacteriovorus, and its role in flagellar function during predatory development. Crystal structures reveal a self-compartmentalised protease in which a PDZ domain forms a lid over a large...
A membrane-anchored inhibitor of papain-like cysteine proteases promotes Pseudomonas root colonization
Pseudomonas species, spanning both beneficial and pathogenic lifestyles, possess conserved mechanisms to modulate plant immunity. Nevertheless, the mechanisms by which commensal bacteria establish and maintain host colonization remain poorly understood. Here, we report the characterization of a Pseudomonas chagasin-like protease inhibitor (Cpi1), conserved across pseudomonads representing a novel class of membrane-anchored PLCP inhibitor.
Heme orchestrates a tissue stress response to proteolytic damage
Whereas cellular stress responses are well defined, tissue-level stress remains poorly understood. Proteases are among the most widespread enzymes, and excessive proteolytic activity drives diseases such as arthritis and chronic obstructive pulmonary disease, yet unifying features of this stress are unclear. Here, using the lung and diverse proteases, we identify a conserved injury signature of proteolytic stress marked by vascular disruption, red blood cell extravasation, and heme release...
Novel recombinant bovine papular stomatitis virus expressing foot and mouth disease virus-like particles elicits protective levels of neutralizing antibodies in cattle
Foot-and-mouth disease (FMD) remains a major burden in endemic regions, where inactivated vaccines are constrained by cost, short duration of immunity, cold-chain dependence, and high-containment manufacturing. Here, we engineered a recombinant bovine papular stomatitis virus (rBPSV) expressing the FMDV A24 Cruzeiro capsid precursor P1-2A together with an attenuated 3C protease (3Cpro L127P). Infection of ovine fetal turbinate (OFTu) cells resulted in robust capsid protein expression and...
New Protein Function Characterization for Human Paralog Discovery, Scraping the Bottom of the Genomics Barrel
IIncreasing the number of related protein paralogs is important for fully understanding protein relationships, yet it remains challenging for sequences in the twilight zone. Here, we present an integrated homolog detection framework that combines sequence-based (BLASTp, MMseqs2), structure-based (Foldseek), and embedding-distance-based (PROST) similarity metrics to identify additional paralogs. To characterize functionally related protein pairs, we develop protein-family-specific supervised...
'Cybertongue' could prevent 70 million tonnes of milk waste every year
New technology developed in Canberra could prevent 70 million tonnes of milk waste each year Sun 7 Jun 2026 at 8:19am In short: A Canberra innovation that can detect contaminants in dairy products could reduce milk waste, with around 150 million tonnes currently wasted annually. It allows dairy companies, who previously had to wait two to three days to receive routine laboratory test results, to test on site in just three minutes. The Cybertongue technology may be expanded to test food for...
Discovery of novel members of the Potyviridae family reveals expanded diversity, a broad host range, and evidence of fungal and oomycete infections
The family Potyviridae represents the largest and most economically important group of plant-infecting RNA viruses. Despite extensive study of crop-associated members, the full diversity, host range, and evolutionary history of potyvirids remain poorly understood. Here, we conducted a large-scale mining of publicly available RNA-seq datasets to systematically search for novel potyvirid sequences.
Bacillus subtilis YpeB holds SleB inactive preventing cortex peptidoglycan degradation during spore dormancy
Bacterial endospores are encased in a thick layer of specialized peptidoglycan called the cortex that is essential for core dehydration and heat resistance. Spore germination and outgrowth requires cortex degradation by enzymes that are deposited in the spore during sporulation. How these enzymes are held inactive during dormancy and activated during germination remains poorly understood.
A prognostic human brain network for diffuse midline glioma
Abstract Diffuse midline gliomas (DMGs) are near-universally lethal tumours of the childhood central nervous system1,2. In animal models, DMGs form brain-wide integrated networks through neuron-to-glioma synapses3,4,5,6 and glioma-to-glioma gap junctional coupling3. This extensive connectivity robustly promotes the growth and invasion of DMG3,4,5,6,7,8,9 and other glial malignancies10,11,12 through paracrine mechanisms and direct neuron-to-glioma synapses.
Robust Multi-Mutant Protein Stability Prediction from a Fine-Tuned Evolutionary Scale Model
Recently, high-throughput experimental techniques have propelled improvements in deep learning-based prediction of mutation effects on protein stability. However, leading stability predictors still struggle to predict the combined effect of multiple mutations and prefer mutations that negatively impact other properties, including expressibility. To mitigate these limitations, we apply Low-Rank Adaptation (LoRA) to specialize ESM3 for stability prediction by fine-tuning on the Megascale...