Gut enzyme Amuc_1547 acts as dual sensor for metal ions and carbohydrates, revealing new paths for metabolic disease therapies
Peer-Reviewed Publication
Updates every hour. Last Updated: 6-Nov-2025 17:11 ET (6-Nov-2025 22:11 GMT/UTC)
Scientists have unveiled the magnesium-bound crystal structure of Akkermansia muciniphila sialidase Amuc_1547, a key enzyme enabling gut bacteria to degrade protective mucins. The study reveals a unique metal-binding pocket, a carbohydrate-binding domain, and an unconventional catalytic mechanism. These findings advance understanding of gut microbiota adaptation and offer potential pathways for therapies targeting metabolic diseases linked to mucin metabolism.
Background: Blunt chest injuries are the predominant cause of rib fractures, which frequently result in pulmonary complications. We hypothesized that different trauma mechanisms and fracture patterns are associated with pulmonary complications in elderly patients (≥65 years) with isolated rib fractures.
Methods: We retrospectively reviewed the data of patients with rib fractures recorded in the electronic medical record system of a trauma center from 2015 to 2019. The correlation between age, comorbidities, trauma mechanisms, fracture patterns, and pulmonary complications was examined.
Results: A total of 168 elderly patients with isolated rib fractures after trauma were included in the study. Except for one patient who died, all other patients recovered and were discharged. Univariate analysis identified age, trauma mechanisms, and fracture patterns as potential risk factors for pulmonary complications. Multivariate logistic regression analysis found that falls [odds ratio (OR) 5.051, 95% confidence interval (CI): 1.380–18.485; P=0.01], rib fracture displacement (OR 4.924, 95% CI: 1.826–13.275; P=0.002), and multiple rib fractures (≥2 ribs) (OR 2.984, 95% CI: 1.182–7.531; P=0.02) were the independent risk factors for pulmonary complications. Subgroup analysis showed that hemothorax occurred in 47 (85.5%, P=0.001) patients with falls, 69 (89.6%, P<0.001) patients with displaced rib fractures, and 99 (74.4%, P<0.001) patients with multiple rib fractures.
Conclusions: The traumatic mechanisms and fracture patterns appear to be related to pulmonary complications, with patients experiencing falls, displaced rib fractures, and multiple rib fractures being more likely to develop these complications.
Keywords: Mechanisms; pulmonary complications; isolated rib fractures; elderly
Workshop Name: The 2nd International Workshop on Data-driven AI(DATAI 2025)
As lithium-ion batteries (LIBs) continue to power electric vehicles and energy storage systems, their long-term health remains a critical challenge. A groundbreaking new method combines deep learning with physical modeling to deliver rapid, accurate degradation diagnosis at the electrode level. This innovative approach requires only 11 data points from a charging cycle, achieving reliable predictions in just 2.5 minutes. By simplifying the data needed and eliminating the need for specialized equipment, this technique offers a faster, more accessible solution to battery health monitoring—paving the way for safer, more efficient battery management in large-scale applications.
Workshop Name:1st Large Language Models for Spatial-rich Data Management (LLM+Spatial)
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