8ibx

Structure of R2 with 3'UTR and DNA in unwinding state

spinqualitylabelsall models 8ibx, resolution 3.74Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8ibx is a 4 chain structure with sequence from Bombyx mori. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.74Å Ligands: ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function V9H052_BOMMO Publication Abstract from PubMed Retroelements are the widespread jumping elements considered as major drivers for genome evolution, which can also be repurposed as gene-editing tools. Here, we determine the cryo-EM structures of eukaryotic R2 retrotransposon with ribosomal DNA target and regulatory RNAs. Combined with biochemical and sequencing analysis, we reveal two essential DNA regions, Drr and Dcr, required for recognition and cleavage. The association of 3' regulatory RNA with R2 protein accelerates the first-strand cleavage, blocks the second-strand cleavage, and initiates the reverse transcription starting from the 3'-tail. Removing 3' regulatory RNA by reverse transcription allows the association of 5' regulatory RNA and initiates the second-strand cleavage. Taken together, our work explains the DNA recognition and RNA supervised sequential retrotransposition mechanisms by R2 machinery, providing insights into the retrotransposon and application reprogramming. Structural RNA components supervise the sequential DNA cleavage in R2 retrotransposon.,Deng P, Tan SQ, Yang QY, Fu L, Wu Y, Zhu HZ, Sun L, Bao Z, Lin Y, Zhang QC, Wang H, Wang J, Liu JG Cell. 2023 Jun 22;186(13):2865-2879.e20. doi: 10.1016/j.cell.2023.05.032. Epub , 2023 Jun 9. PMID:37301196 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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