4fb0
From Proteopedia
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4fb0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oceanobacillus_iheyensis Oceanobacillus iheyensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FB0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FB0 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4fb0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oceanobacillus_iheyensis Oceanobacillus iheyensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FB0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FB0 FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SPM:SPERMINE'>SPM</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.22Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SPM:SPERMINE'>SPM</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4fb0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fb0 OCA], [https://pdbe.org/4fb0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fb0 RCSB], [https://www.ebi.ac.uk/pdbsum/4fb0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fb0 ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4fb0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fb0 OCA], [https://pdbe.org/4fb0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fb0 RCSB], [https://www.ebi.ac.uk/pdbsum/4fb0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fb0 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Group II introns are self-splicing ribozymes that share a reaction mechanism and a common ancestor with the eukaryotic spliceosome, thereby providing a model system for understanding the chemistry of pre-mRNA splicing. Here we report 14 crystal structures of a group II intron at different stages of catalysis. We provide a detailed mechanism for the first step of splicing, we describe a reversible conformational change between the first and the second steps of splicing, and we present the ligand-free intron structure after splicing in an active state that corresponds to the retrotransposable form of the intron. During each reaction, the reactants are aligned and activated by a heteronuclear four-metal-ion center that contains a metal cluster and obligate monovalent cations, and they adopt a structural arrangement similar to that of protein endonucleases. Based on our data, we propose a model for the splicing cycle and show that it is applicable to the eukaryotic spliceosome. | ||
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| - | Visualizing Group II Intron Catalysis through the Stages of Splicing.,Marcia M, Pyle AM Cell. 2012 Oct 26;151(3):497-507. doi: 10.1016/j.cell.2012.09.033. PMID:23101623<ref>PMID:23101623</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 4fb0" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Structure of Oceanobacillus iheyensis group II intron C377G mutant in a ligand-free state in the presence of K+ and Mg2+
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