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3oin

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Revision as of 05:52, 22 April 2020

Crystal structure of Saccharomyces cerevisiae Nep1/Emg1 bound to S-adenosylhomocysteine and 1 molecule of cognate RNA

Structural highlights

3oin is a 3 chain structure with sequence from Atcc 18824. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
NonStd Res:
Related:	3o7b, 3oii, 3oij
Gene:	EMG1, NEP1, YLR186W, L9470.5 (ATCC 18824)
Activity:	rRNA small subunit pseudouridine methyltransferase Nep1, with EC number 2.1.1.260
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[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.^[1] ^[2] ^[3] ^[4] ^[5]

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.

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^[6]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Liu PC, Thiele DJ. Novel stress-responsive genes EMG1 and NOP14 encode conserved, interacting proteins required for 40S ribosome biogenesis. Mol Biol Cell. 2001 Nov;12(11):3644-57. PMID:11694595
↑ Eschrich D, Buchhaupt M, Kotter P, Entian KD. Nep1p (Emg1p), a novel protein conserved in eukaryotes and archaea, is involved in ribosome biogenesis. Curr Genet. 2002 Feb;40(5):326-38. Epub 2002 Feb 6. PMID:11935223 doi:http://dx.doi.org/10.1007/s00294-001-0269-4
↑ Bernstein KA, Gallagher JE, Mitchell BM, Granneman S, Baserga SJ. The small-subunit processome is a ribosome assembly intermediate. Eukaryot Cell. 2004 Dec;3(6):1619-26. PMID:15590835 doi:http://dx.doi.org/10.1128/EC.3.6.1619-1626.2004
↑ Meyer B, Wurm JP, Kotter P, Leisegang MS, Schilling V, Buchhaupt M, Held M, Bahr U, Karas M, Heckel A, Bohnsack MT, Wohnert J, Entian KD. The Bowen-Conradi syndrome protein Nep1 (Emg1) has a dual role in eukaryotic ribosome biogenesis, as an essential assembly factor and in the methylation of Psi1191 in yeast 18S rRNA. Nucleic Acids Res. 2011 Mar;39(4):1526-37. doi: 10.1093/nar/gkq931. Epub 2010 Oct, 23. PMID:20972225 doi:http://dx.doi.org/10.1093/nar/gkq931
↑ Thomas SR, Keller CA, Szyk A, Cannon JR, Laronde-Leblanc NA. Structural insight into the functional mechanism of Nep1/Emg1 N1-specific pseudouridine methyltransferase in ribosome biogenesis. Nucleic Acids Res. 2010 Nov 17. PMID:21087996 doi:10.1093/nar/gkq1131
↑ Thomas SR, Keller CA, Szyk A, Cannon JR, Laronde-Leblanc NA. Structural insight into the functional mechanism of Nep1/Emg1 N1-specific pseudouridine methyltransferase in ribosome biogenesis. Nucleic Acids Res. 2010 Nov 17. PMID:21087996 doi:10.1093/nar/gkq1131

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3oin"

@@ Line 1: / Line 1: @@
-==Crystal structure of Saccharomyces Cerevisiae Nep1/Emg1 bound to S-adenosylhomocysteine and 1 molecule of cognate RNA==
+==Crystal structure of Saccharomyces cerevisiae Nep1/Emg1 bound to S-adenosylhomocysteine and 1 molecule of cognate RNA==
-<StructureSection load='3oin' size='340' side='right' caption='[[3oin]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
+<StructureSection load='3oin' size='340' side='right'caption='[[3oin]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3oin]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. 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 [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3OIN FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3oin]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. 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 [http://proteopedia.org/fgij/fg.htm?mol=3OIN FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><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>
+</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></td></tr>
+<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SCY:S-ACETYL-CYSTEINE'>SCY</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3o7b|3o7b]], [[3oii|3oii]], [[3oij|3oij]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">EMG1, NEP1, YLR186W, L9470.5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3oin FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oin OCA], [http://pdbe.org/3oin PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3oin RCSB], [http://www.ebi.ac.uk/pdbsum/3oin PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3oin ProSAT]</span></td></tr>
+<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/rRNA_small_subunit_pseudouridine_methyltransferase_Nep1 rRNA small subunit pseudouridine methyltransferase Nep1], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.260 2.1.1.260] </span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=3oin FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oin OCA], [http://pdbe.org/3oin PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3oin RCSB], [http://www.ebi.ac.uk/pdbsum/3oin PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3oin ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 25: / Line 27: @@
 </StructureSection>
 [[Category: Atcc 18824]]
+[[Category: Large Structures]]
+[[Category: RRNA small subunit pseudouridine methyltransferase Nep1]]
 [[Category: LaRonde-LeBlanc, N]]
 [[Category: Thomas, S R]]

3oin

From Proteopedia

Revision as of 05:52, 22 April 2020

Crystal structure of Saccharomyces cerevisiae Nep1/Emg1 bound to S-adenosylhomocysteine and 1 molecule of cognate RNA

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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