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Production of virus-like particles of FMDV by 3C protease cleaving precursor polyprotein P1 in vitro.
Appl Microbiol Biotechnol
December 2024
State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730000, China.
Nonstructural protein 3C, a master protease of Picornaviridae, plays a critical role in viral replication by directly cleaving the viral precursor polyprotein to form the viral capsid protein and antagonizing the host antiviral response. Additionally, 3C protease, as a tool enzyme, is involved in regulating polyprotein expression. Here, the 3C mutant gene (3Cm), fused with a small ubiquitin-like modifier (SUMO) tag at the N-terminal and featuring a mutation at position 127, was inserted into the cold-shock plasmid pCold of Escherichia coli for expression.
View Article and Find Full Text PDFThe Role of Med15 Sequence Features in Transcription Factor Interactions.
Mol Cell Biol
December 2024
Department of Biology, University of Iowa, Iowa City, Iowa, USA.
Med15 is a general transcriptional regulator and tail module subunit within the RNA Pol II mediator complex. The Med15 protein has a well-structured N-terminal KIX domain, three activator binding domains (ABDs) and several naturally variable polyglutamine (poly-Q) tracts (Q1, Q2, Q3) embedded in an intrinsically disordered central region, and a C-terminal mediator association domain (MAD). We investigated how the presence of ABDs and changes in length and composition of poly-Q tracts influences Med15 activity using phenotypic, gene expression, transcription factor interaction and phase separation assays of truncation, deletion, and synthetic alleles.
View Article and Find Full Text PDFSRPK1 facilitates IBDV replication by phosphorylating VP1 at S48.
Int J Biol Macromol
December 2024
Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, PR China; Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, PR China. Electronic address:
Infectious Bursal Disease Virus (IBDV), a double-stranded RNA virus of the Avibirnavirus genus, causes significant vaccine failures in immunocompromised young poultry. The VP1 protein of IBDV undergoes post-translational modifications that are critical for viral RNA transcription, genome replication, and overall viral proliferation. Phosphorylation enhances the ability of the IBDV polymerase VP1 and facilitates viral replication, while the specific mechanisms underlying VP1 phosphorylation and its role in the IBDV life cycle remain largely unexplored.
View Article and Find Full Text PDFSystematic pan-cancer analysis identifies ZBTB11 as a potential pan-cancer biomarker and immunotherapy target in multiple tumor types.
Discov Oncol
December 2024
Department of Gastroenterology, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Gulou District, Nanjing, Jiangsu, China.
Background: ZBTB11 is a putative transcription factor with an N-terminal BTB domain and tandem C-terminal zinc finger motifs. Recent studies have suggested a potential role for ZBTB11 in tumorigenesis. However, the biological significance of ZBTB11 in different cancer types remains uncertain.
View Article and Find Full Text PDFUnlabelled: The cat eye syndrome chromosome region candidate 2 (CECR2) protein is an epigenetic regulator involved in chromatin remodeling and transcriptional control. The CECR2 bromodomain (CECR2-BRD) plays a pivotal role in directing the activity of CECR2 through its capacity to recognize and bind acetylated lysine residues on histone proteins. This study elucidates the binding specificity and structural mechanisms of CECR2-BRD interactions with both histone and non-histone ligands, employing techniques such as isothermal titration calorimetry (ITC), nuclear magnetic resonance (NMR) spectroscopy, and a high-throughput peptide assay.
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