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eIF3 engages with 3'-UTR termini of highly translated mRNAs.
Elife
January 2025
Innovative Genomics Institute, University of California, Berkeley, Berkeley, United States.
Stem cell differentiation involves a global increase in protein synthesis to meet the demands of specialized cell types. However, the molecular mechanisms underlying this translational burst and the involvement of initiation factors remains largely unknown. Here, we investigate the role of eukaryotic initiation factor 3 (eIF3) in early differentiation of human pluripotent stem cell (hPSC)-derived neural progenitor cells (NPCs).
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Chair of Microbiology, Technical University of Munich, TUM School of Life Science, Emil-Ramann-Str. 4, 85354, Freising, Germany.
The anaerobic bacterium Clostridium cellulovorans is a promising candidate for the sustainable production of biofuels and platform chemicals due to its cellulolytic properties. However, the genomic engineering of the species is hampered because of its poor genetic accessibility and the lack of genetic tools. To overcome this limitation, a protocol for triparental conjugation was established that enables the reliable transfer of vectors for markerless chromosomal modification into C.
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Department of Reproductive Health and Infertility, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China.
Reduced trophoblast migration and invasion contribute to unexplained recurrent spontaneous abortion (URSA). Aquaporin 3 (AQP3) plays a crucial role in facilitating trophoblast migration and invasion during early pregnancy through fetal-maternal crosstalk. This study aimed to comprehensively investigate the mechanism involving AQP3 and its modulatory effects on human extravillous trophoblast (HTR-8/SVneo cells) migration and invasion.
View Article and Find Full Text PDFInfluenza A virus NS2 protein acts on vRNA-resident polymerase to drive the transcription to replication switch.
Nucleic Acids Res
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CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
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View Article and Find Full Text PDFSelection of initiator tRNA and start codon by mammalian mitochondrial initiation factor 3 in leaderless mRNA translation.
Nucleic Acids Res
January 2025
Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan.
Article Synopsis
- The mammalian mitochondrial protein synthesis system is responsible for synthesizing 13 crucial subunits for energy production, but the exact role of IF-3mt in translation initiation is still unclear.
- Researchers created a mitochondrial translation system to explore IF-3mt's proofreading abilities, revealing it helps distinguish between different start codons for more accurate protein synthesis.
- The findings indicate that IF-3mt not only supports initiation from standard AUG start codons but can also facilitate initiation from non-AUG codons like AUA, highlighting its adaptability in working with leaderless mRNAs.
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