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My research focuses on the initiation of protein synthesis in higher plants. We are seeking a molecular description of the process in which initiation factors (eIF4A, eIF4B, eIF4F, eIF3, eIF2 and PABP) select, prepare and bind messenger RNA to the 40S ribosome. Plants have a unique second form of eIF4F (eIF(iso)4F), and we are using a variety of methods (genetic knockouts, gene silencing, DNA arrays, etc.) to discover the function of this novel initiation factor. We are also interested in the features of messenger RNAs that make some messenger RNAs translate more efficiently than others and why plants need two forms of eIF4F. We are studying a plant viral RNA, satellite tobacco necrosis virus, that appears to use a region in the 3’ untranslated region (3’ UTR) to facilitate cap-independent translation by recruiting eIF4F. eIF4F is normally bound to the 5’ cap of mRNAs during initiation, so the use of the viral 3’ UTR to facilitate initiation at the 5’ end represents a novel mechanism. We are using a variety of techniques to study the interactions of initiation factors with each other and with messenger RNAs (expression of cloned factors, site-directed mutagenesis, crystallography, yeast three-hybrid system, fluorescence, etc.). From our studies we hope to gain a better understanding of the protein-protein and protein-RNA interactions that must occur for successful initiation of translation of a specific messenger RNA to occur.
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Papers共 88 篇Author StatisticsCo-AuthorSimilar Experts
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PLOS PATHOGENSno. 11 (2023): e1011417-e1011417
The Plant Cellno. 2 (2022): 640-643
Andrew D Lellis,Ryan M Patrick,Laura K Mayberry,Argelia Lorence,Zachary C Campbell,Johnna L Roose,Laurie K Frankel,Terry M Bricker,Hanjo A Hellmann, Roderick W Mayberry, Ana Solis Zavala,Grace S Choy,
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