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Nucleocapsid assembly drives Ebola viral factory maturation and dispersion.
Cell
December 2024
Schaller Research Groups, Department of Infectious Diseases, Virology, Heidelberg University, Heidelberg, Germany; BioQuant, Heidelberg University, Heidelberg, Germany. Electronic address:
Replication and genome encapsidation of many negative-sense RNA viruses take place in virus-induced membraneless organelles termed viral factories (VFs). Although liquid properties of VFs are believed to control the transition from genome replication to nucleocapsid (NC) assembly, VF maturation and interactions with the cellular environment remain elusive. Here, we apply in situ cryo-correlative light and electron tomography to follow NC assembly and changes in VF morphology and their liquid properties during Ebola virus infection.
View Article and Find Full Text PDFA Cross-Sectional Serological Study to Assess the Prevalence and Risk Factors of Anaplasmosis in Dromedary Camels in Punjab, Pakistan.
Vet Sci
December 2024
Department of Clinical Medicine and Surgery, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan.
Anaplasmosis is an infectious disease transmitted by ticks and caused by obligate intracellular pathogen of belonging to genus Infections of one-humped camels () and llamas () have been reported previously. The aim of this study was to investigate the seroprevalence and risk factors of anti- spp. antibodies in of the Punjab, Pakistan.
View Article and Find Full Text PDFTo be or not to be phosphorylated: Understanding the role of Ebola virus nucleoprotein in the dynamic interplay with the transcriptional activator VP30 and the host phosphatase PP2A-B56.
Emerg Microbes Infect
December 2024
Institute of Virology, Philipps-Universität Marburg, 35043 Marburg, Germany.
Ebola virus (EBOV) transcription is essentially regulated via dynamic dephosphorylation of its viral transcription activator VP30 by the host phosphatase PP2A. The nucleoprotein NP has emerged as a third key player in the regulation of this process by recruiting both the regulatory subunit B56 of PP2A and its substrate VP30 to initiate VP30 dephosphorylation and hence viral transcription. Both binding sites are located in close proximity to each other in NP's C-terminal disordered region.
View Article and Find Full Text PDFExploring the druggability of the UEV domain of human TSG101 in search for broad-spectrum antivirals.
Protein Sci
January 2025
Department of Physical Chemistry, Institute of Biotechnology, and Unit of Excellence in Chemistry Applied to Biomedicine and Environment, School of Sciences, University of Granada, Granada, Spain.
The ubiquitin E2 variant domain of TSG101 (TSG101-UEV) plays a pivotal role in protein sorting and virus budding by recognizing PTAP motifs within ubiquitinated proteins. Disruption of TSG101-UEV/PTAP interactions has emerged as a promising strategy for the development of host-oriented broad-spectrum antivirals with low susceptibility to resistance. TSG101 is a challenging target characterized by an extended and flat binding interface, low affinity for PTAP ligands, and complex binding energetics.
View Article and Find Full Text PDFSpatial distribution of Q fever in sheep and goats of selective villages of Punjab Province, Pakistan.
BMC Vet Res
December 2024
Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743, Jena, Germany.
This study aimed to assess the geographical distribution of Q fever in sheep and goats in different areas of Punjab, Pakistan. Three hundred blood samples of small ruminants including sheep and goats were collected from 60 villages of three districts (Okara, Kasur, and Pakpattan) of Punjab Province Pakistan and tested for the detection of anti-Coxiella burnetii antibodies using a commercial Indirect ELISA kit. Data related to sampling location, host species, gender, age, and GPS coordinates were collected for spatial analysis.
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