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DTSTART;TZID=America/Detroit:20220110T160000
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SUMMARY:RNA Faculty Candidate Seminar: Rachel Niederer\, Yale School of Medicine
DESCRIPTION:“Uncovering novel translational control elements within 5′ UTRs”\nRachel Niederer\, Ph.D.\nPostdoctoral Researcher\nYale School of Medicine \n  \nCo-Hosts: The Center for RNA Biomedicine\, Department of Biological Chemistry\, and the Department of Human Genetics \nHybrid Seminar:\nIn-person: Biomedical Science Research Buliding (BSRB)\, ABC Seminar rooms\nZoom: https://umich.zoom.us/webinar/register/WN_qg4fyCUbQZyVu0oGrBLmWQ \nAbstract: Translational control of gene expression plays an essential role during development\, response to stress and a wide range of cellular processes. However\, the key mRNA features that distinguish efficiently translated from poorly translated mRNAs remain largely unknown. This talk will describe the development of direct analysis of ribosome targeting (DART) and its use both in discovering novel regulatory elements within 5′ untranslated regions (5′ UTRs) as well as revealing unexpected behaviors from features that were previously thought to be well understood. \nIn-person event COVID guidelines \nFlyer in PDF
URL:https://rna.umich.edu/events/rachel-niederer/
CATEGORIES:Seminar
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DTSTART;TZID=America/Detroit:20220131T160000
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UID:9808-1643644800-1643648400@rna.umich.edu
SUMMARY:RNA Faculty Candidate Seminar: Jailson (Jay) Brito Querido\, MRC Laboratory of Molecular Biology
DESCRIPTION:“The scanning mechanism of mRNA translation initiation in humans”\nJailson (Jay) Brito Querido\, Ph.D.\nPostdoctoral Scientist\nMRC Laboratory of Molecular Biology\nCambridge\, UK \n  \n  \n  \nCo-Hosts: The Center for RNA Biomedicine\, Department of Biological Chemistry\, and the Program in Biophysics \nHybrid Seminar:\nIn-person: Biomedical Science Research Building (BSRB)\, ABC Seminar rooms\nZoom: https://umich.zoom.us/webinar/register/WN_pcS-fWIdSS-hDnKzoRhXeg \nKeywords: mRNA\, translation\, ribosome\, helicase\nAbstract: Decoding the genetic information into protein is fundamental for all kingdoms of life. It requires precise mechanisms to transcribe the DNA into mRNA\, which then can be translated by the ribosome to produce proteins. Translation initiation of eukaryotic mRNAs is a dynamic process regulated by over a dozen protein eukaryotic initiation factors (eIFs). This process starts with the binding of eukaryotic initiation factors eIF1\, eIF1A\, eIF3\, eIF5\, and a ternary complex of eIF2–GTP–tRNAiMet (TC) to the 40S small ribosomal subunit\, forming the 43S preinitiation complex (43S PIC). Once assembled\, the 43S PIC is recruited to the 5′ untranslated region (UTR) of mRNA by the multifactor cap-binding complex eIF4F\, forming the 48S initiation complex (48S). The 48S then scans along the 5′ UTR mRNA to locate a start codon. The eIF4F binding site in the 48S and how mRNA is inserted into the mRNA channel in the 40S small ribosomal subunit remained unknown. To gain insights into the molecular mechanism underlining the assembly of the 48S\, we used cryo-electron microscopy to determine the structure of a reconstituted human 48S. The structure sheds light on the early events of translation initiation complex assembly\, including how eIF4F interacts with the 43S during the scanning process. \nIn-person COVID Events Policy
URL:https://rna.umich.edu/events/jay-brito-querido/
CATEGORIES:Seminar
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