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Nat Struct Mol Biol
January 2025
Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA, USA.
Botulinum neurotoxins (BoNTs) rank among the most potent toxins and many of them are produced by bacteria carrying the orfX gene cluster that also encodes four nontoxic proteins (OrfX1, OrfX2, OrfX3 and P47). The orfX gene cluster is also found in the genomes of many non-BoNT-producing bacteria, often alongside genes encoding oral insecticidal toxins. However, the functions of these OrfXs and P47 remain elusive.
View Article and Find Full Text PDFJ Ethnopharmacol
January 2025
Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China. Electronic address:
Ethnopharmacological Relevance: TongXieYaoFang (TXYF), a classical formula used in Traditional Chinese Medicine, is renowned for its efficacy in treating chronic abdominal pain and diarrhoea. Modern research suggests that fundamental relief from these symptoms depends on complete intestinal mucosal healing, which normalises gut secretory functions. Consensus between traditional and modern medical theories indicates that TXYF is particularly suitable for treating the remission phase of ulcerative colitis (UC).
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Henan Province Engineering Research Center of Innovation for Synthetic Biology, School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, Henan, China; School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China. Electronic address:
The mechanisms underlying antigen receptor germline gene diversification have always been a topic of intensive study. Here, we discovered that the frequency of stem-loop sequences in the antigen receptor germline gene region is remarkably higher than the genomic background. By analyzing these stem-loop sequences' similarity and distribution patterns, we found that clustered regularly interspaced homologous stem-loop pairs (CRIHSP) are widely present on the germline genes of antigen receptors in different species.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
Maladies infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, University of Montpellier, CNRS, Institut de Recherche pour le Développement, Montpellier 34095, France.
Tubulin detyrosination has been implicated in various human disorders and is important for regulating microtubule dynamics. While in most organisms this modification is restricted to α-tubulin, in trypanosomatid parasites, it occurs on both α- and β-tubulin. Here, we show that in , a single vasohibin (LmVASH) enzyme is responsible for differential kinetics of α- and β-tubulin detyrosination.
View Article and Find Full Text PDFBiological memory networks are thought to store information by experience-dependent changes in the synaptic connectivity between assemblies of neurons. Recent models suggest that these assemblies contain both excitatory and inhibitory neurons (E/I assemblies), resulting in co-tuning and precise balance of excitation and inhibition. To understand computational consequences of E/I assemblies under biologically realistic constraints we built a spiking network model based on experimental data from telencephalic area Dp of adult zebrafish, a precisely balanced recurrent network homologous to piriform cortex.
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