3oin: Difference between revisions

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-{{Seed}}
-[[Image:3oin.jpg|left|200px]]
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+==Crystal structure of Saccharomyces cerevisiae Nep1/Emg1 bound to S-adenosylhomocysteine and 1 molecule of cognate RNA==
-The line below this paragraph, containing "STRUCTURE_3oin", creates the "Structure Box" on the page.
+<StructureSection load='3oin' size='340' side='right'caption='[[3oin]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
+== Structural highlights ==
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
+<table><tr><td colspan='2'>[[3oin]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OIN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OIN FirstGlance]. <br>
-or leave the SCENE parameter empty for the default display.
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
--->
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene>, <scene name='pdbligand=SCY:S-ACETYL-CYSTEINE'>SCY</scene></td></tr>
-{{STRUCTURE_3oin|  PDB=3oin  |  SCENE=  }}
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3oin FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oin OCA], [https://pdbe.org/3oin PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3oin RCSB], [https://www.ebi.ac.uk/pdbsum/3oin PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3oin ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/NEP1_YEAST NEP1_YEAST] S-adenosyl-L-methionine-dependent pseudouridine N(1)-methyltransferase that methylates pseudouridine at position 1189 (Psi1189) in 18S rRNA. Involved the biosynthesis of the hypermodified N1-methyl-N3-(3-amino-3-carboxypropyl) pseudouridine (m1acp3-Psi) conserved in eukaryotic 18S rRNA. N1-methylation is independent on acp-modification at the N3-position of U1191. Has also an essential role in 40S ribosomal subunit biogenesis independent on its methyltransferase activity, facilitating the incorporation of ribosomal protein S19 (RPS19A/RPS19B) during the formation of pre-ribosomes.<ref>PMID:11694595</ref> <ref>PMID:11935223</ref> <ref>PMID:15590835</ref> <ref>PMID:20972225</ref> <ref>PMID:21087996</ref>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Nucleolar Essential Protein 1 (Nep1) is required for small subunit (SSU) ribosomal RNA (rRNA) maturation and is mutated in Bowen-Conradi Syndrome. Although yeast (Saccharomyces cerevisiae) Nep1 interacts with a consensus sequence found in three regions of SSU rRNA, the molecular details of the interaction are unknown. Nep1 is a SPOUT RNA methyltransferase, and can catalyze methylation at the N1 of pseudouridine. Nep1 is also involved in assembly of Rps19, an SSU ribosomal protein. Mutations in Nep1 that result in decreased methyl donor binding do not result in lethality, suggesting that enzymatic activity may not be required for function, and RNA binding may play a more important role. To study these interactions, the crystal structures of the scNep1 dimer and its complexes with RNA were determined. The results demonstrate that Nep1 recognizes its RNA site via base-specific interactions and stabilizes a stem-loop in the bound RNA. Furthermore, the RNA structure observed contradicts the predicted structures of the Nep1-binding sites within mature rRNA, suggesting that the Nep1 changes rRNA structure upon binding. Finally, a uridine base is bound in the active site of Nep1, positioned for a methyltransfer at the C5 position, supporting its role as an N1-specific pseudouridine methyltransferase.
-===Crystal structure of Saccharomyces Cerevisiae Nep1/Emg1 bound to S-adenosylhomocysteine and 1 molecule of cognate RNA===
+Structural insight into the functional mechanism of Nep1/Emg1 N1-specific pseudouridine methyltransferase in ribosome biogenesis.,Thomas SR, Keller CA, Szyk A, Cannon JR, Laronde-Leblanc NA Nucleic Acids Res. 2010 Nov 17. PMID:21087996<ref>PMID:21087996</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-==About this Structure==
+</div>
-OIN is a 3 chains structure with sequences from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OIN OCA].
+<div class="pdbe-citations 3oin" style="background-color:#fffaf0;"></div>
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Large Structures]]
 [[Category: Saccharomyces cerevisiae]]
-[[Category: LaRonde-LeBlanc, N.]]
+[[Category: LaRonde-LeBlanc N]]
-[[Category: Thomas, S R.]]
+[[Category: Thomas SR]]
-[[Category: Emg1]]
-[[Category: Methyltransferase]]
-[[Category: Ribosomal protein]]
-[[Category: Ribosome biogenesis]]
-[[Category: Rrna processing]]
-[[Category: Scnep1]]
-[[Category: Spout]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Dec  1 11:34:12 2010''