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Quantitative Proteomics Identifies Profilin-1 as a Pseudouridine-Binding Protein.
J Am Chem Soc
January 2025
Department of Chemistry, University of California, Riverside, California 92521-0403, United States.
Pseudouridine (Ψ) is the most abundant RNA modification in nature; however, not much is known about the biological functions of this modified nucleoside. Employing an unbiased quantitative proteomics method, we identified multiple candidate reader proteins of Ψ in RNA, including a cytoskeletal protein profilin-1 (PFN1). We demonstrated that PFN1 binds directly and selectively to Ψ-containing RNA.
View Article and Find Full Text PDFDirected evolution of an orthogonal transcription engine for programmable gene expression in eukaryotes.
iScience
January 2025
Laboratory of Antibody Discovery and Accelerated Protein Therapeutics, Center for Infectious Diseases, Houston Methodist Research Institute and Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, TX, USA.
T7 RNA polymerase (RNAP) has enabled orthogonal control of gene expression and recombinant protein production across diverse prokaryotic host chassis organisms for decades. However, the absence of 5' methyl guanosine caps on T7 RNAP-derived transcripts has severely limited its utility and widespread adoption in eukaryotic systems. To address this shortcoming, we evolved a fusion enzyme combining T7 RNAP with the single subunit capping enzyme from African swine fever virus using .
View Article and Find Full Text PDFTranscription Factor Fingerprint Provides Clues for Brain Tumor Cell of Origin.
Cancer Res
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Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee.
Mouse models that faithfully represent the biology of human brain tumors are critical tools for unraveling the underlying tumor biology and screening for potential precision therapies. This is especially true of rare tumor types, many of which have correspondingly few xenograft or cell lines available. Although our understanding of the specific biological pathways driving cancer has improved significantly, identifying the appropriate progenitor populations to drive oncogenic processes represents a significant barrier to efficient mouse model production.
View Article and Find Full Text PDFA mixed-method study on physicians' perceptions of pay for performance: impact on professionalism, morality and work-life balance.
BMC Health Serv Res
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Department of Biostatistics, Ankara University, Faculty of Medicine, Morfoloji Binasi, Biyoistatistik AD, 06230, Ankara, Altindag, Turkey.
Background: Pay-for-performance system (P4P) has been in operation in the Turkish healthcare sector since 2004. While the government defended that it encouraged healthcare professionals' job motivation, and improved patient satisfaction by increasing efficiency and service quality, healthcare professionals have emphasized the system's negative effects on working conditions, physicians' trustworthiness, and cost-quality outcomes. In this study, we investigated physicians' accounts of current working conditions, their status as a moral agent, and their professional attitudes in the context of P4P's perceived effects on their professional, social, private, and future lives.
View Article and Find Full Text PDFDynamic regulation and enhancement of synthetic network for efficient biosynthesis of monoterpenoid α-pinene in yeast cell factory.
Bioresour Technol
January 2025
Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China; Department of Chemical Engineering, Tsinghua University, Beijing, China; Key Lab for Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, China; Center for Synthetic and Systems Biology, Tsinghua University, Beijing, China; School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, Xinjiang, China. Electronic address:
Pinene is a plant volatile monoterpenoid which is used in the fragrance, pesticide, and biofuel industries. Although α-pinene has been synthesized in microbial cell factories, the low synthesis efficiency has thus far limited its production. In this study, the cell growth and α-pinene production of the engineered yeast were decoupled by a dynamic regulation strategy, resulting in a 101.
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