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| | <StructureSection load='1jbs' size='340' side='right'caption='[[1jbs]], [[Resolution|resolution]] 1.97Å' scene=''> | | <StructureSection load='1jbs' size='340' side='right'caption='[[1jbs]], [[Resolution|resolution]] 1.97Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1jbs]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Aspre Aspre]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JBS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1jbs]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Aspergillus_restrictus Aspergillus restrictus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JBS FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</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]] 1.97Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=A2M:2-O-METHYLADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>A2M</scene>, <scene name='pdbligand=OMC:O2-METHYLYCYTIDINE-5-MONOPHOSPHATE'>OMC</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A2M:2-O-METHYLADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>A2M</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=OMC:O2-METHYLYCYTIDINE-5-MONOPHOSPHATE'>OMC</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1aqz|1aqz]], [[430d|430d]], [[480d|480d]], [[483d|483d]], [[1jbr|1jbr]], [[1jbt|1jbt]]</div></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=1jbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jbs OCA], [https://pdbe.org/1jbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jbs RCSB], [https://www.ebi.ac.uk/pdbsum/1jbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jbs 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=1jbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jbs OCA], [https://pdbe.org/1jbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jbs RCSB], [https://www.ebi.ac.uk/pdbsum/1jbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jbs ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/RNMG_ASPRE RNMG_ASPRE]] This purine-specific ribonuclease cleaves 28S RNA in eukaryotic ribosomes, inhibits protein synthesis, and shows antitumor activity.
| + | [https://www.uniprot.org/uniprot/RNMG_ASPRE RNMG_ASPRE] This purine-specific ribonuclease cleaves 28S RNA in eukaryotic ribosomes, inhibits protein synthesis, and shows antitumor activity. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Aspre]] | + | [[Category: Aspergillus restrictus]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Correll, C C]] | + | [[Category: Correll CC]] |
| - | [[Category: Gerczei, T]] | + | [[Category: Gerczei T]] |
| - | [[Category: Glover, L]] | + | [[Category: Glover L]] |
| - | [[Category: Yang, X]] | + | [[Category: Yang X]] |
| - | [[Category: Highly specific ribonuclease]]
| + | |
| - | [[Category: Hydrolase-rna complex]]
| + | |
| - | [[Category: Protein-rna complex]]
| + | |
| - | [[Category: Ribonuclease t1]]
| + | |
| - | [[Category: Ribotoxin]]
| + | |
| Structural highlights
1jbs is a 4 chain structure with sequence from Aspergillus restrictus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 1.97Å |
| Ligands: | , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
RNMG_ASPRE This purine-specific ribonuclease cleaves 28S RNA in eukaryotic ribosomes, inhibits protein synthesis, and shows antitumor activity.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The cytotoxin sarcin disrupts elongation factor binding and protein synthesis by specifically cleaving one phosphodiester bond in ribosomes. To elucidate the molecular basis of toxin action, we determined three cocrystal structures of the sarcin homolog restrictocin bound to different analogs that mimic the target sarcin/ricin loop (SRL) structure of the rat 28S rRNA. In these structures, restrictocin contacts the bulged-G motif and an unfolded form of the tetraloop of the SRL RNA. In one structure, toxin loops guide selection of the target site by contacting the base critical for recognition (G4319) and the surrounding S-shaped backbone. In another structure, base flipping of the tetraloop enables cleavage by placing the target nucleotide in the active site with the nucleophile nearly inline for attack on the scissile bond. These structures provide the first views of how a site-specific protein endonuclease recognizes and cleaves a folded RNA substrate.
Crystal structures of restrictocin-inhibitor complexes with implications for RNA recognition and base flipping.,Yang X, Gerczei T, Glover LT, Correll CC Nat Struct Biol. 2001 Nov;8(11):968-73. PMID:11685244[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yang X, Gerczei T, Glover LT, Correll CC. Crystal structures of restrictocin-inhibitor complexes with implications for RNA recognition and base flipping. Nat Struct Biol. 2001 Nov;8(11):968-73. PMID:11685244 doi:10.1038/nsb1101-968
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