8OLW
Structure of Oceanobacillus iheyensis group II intron before the first step of splicing in the presence of K+, Ca2+ and intronistat B
Summary for 8OLW
| Entry DOI | 10.2210/pdb8olw/pdb |
| Related | 4E8K 4E8M 4E8N 4E8P 4E8Q 4E8R 4E8T 4E8V 4FAQ 4FAR 4FAU 4FAW 4FAX 4FB0 6T3K 6T3N 6T3R 6T3S 8OLS 8OLV |
| Descriptor | Group IIC intron, CALCIUM ION, POTASSIUM ION, ... (4 entities in total) |
| Functional Keywords | ribozyme, metalloenzyme, self-splicing, retrotransposition, rna |
| Biological source | Oceanobacillus iheyensis |
| Total number of polymer chains | 1 |
| Total formula weight | 129378.97 |
| Authors | Silvestri, I.,Marcia, M. (deposition date: 2023-03-30, release date: 2024-06-19, Last modification date: 2024-07-03) |
| Primary citation | Silvestri, I.,Manigrasso, J.,Andreani, A.,Brindani, N.,Mas, C.,Reiser, J.B.,Vidossich, P.,Martino, G.,McCarthy, A.A.,De Vivo, M.,Marcia, M. Targeting the conserved active site of splicing machines with specific and selective small molecule modulators. Nat Commun, 15:4980-4980, 2024 Cited by PubMed Abstract: The self-splicing group II introns are bacterial and organellar ancestors of the nuclear spliceosome and retro-transposable elements of pharmacological and biotechnological importance. Integrating enzymatic, crystallographic, and simulation studies, we demonstrate how these introns recognize small molecules through their conserved active site. These RNA-binding small molecules selectively inhibit the two steps of splicing by adopting distinctive poses at different stages of catalysis, and by preventing crucial active site conformational changes that are essential for splicing progression. Our data exemplify the enormous power of RNA binders to mechanistically probe vital cellular pathways. Most importantly, by proving that the evolutionarily-conserved RNA core of splicing machines can recognize small molecules specifically, our work provides a solid basis for the rational design of splicing modulators not only against bacterial and organellar introns, but also against the human spliceosome, which is a validated drug target for the treatment of congenital diseases and cancers. PubMed: 38898052DOI: 10.1038/s41467-024-48697-0 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (4 Å) |
Structure validation
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