4u4c: Difference between revisions

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<StructureSection load='4u4c' size='340' side='right'caption='[[4u4c]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
<StructureSection load='4u4c' size='340' side='right'caption='[[4u4c]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4u4c]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Baker's_yeast Baker's yeast]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4U4C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4U4C FirstGlance]. <br>
<table><tr><td colspan='2'>[[4u4c]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4U4C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4U4C 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=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MTR4, DOB1, YJL050W, J1158 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast]), PAP2, TRF4, YOL115W, HRC584, O0716 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast])</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=4u4c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4u4c OCA], [https://pdbe.org/4u4c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4u4c RCSB], [https://www.ebi.ac.uk/pdbsum/4u4c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4u4c 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/RNA_helicase RNA helicase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.4.13 3.6.4.13] </span></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=4u4c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4u4c OCA], [http://pdbe.org/4u4c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4u4c RCSB], [http://www.ebi.ac.uk/pdbsum/4u4c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4u4c ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/MTR4_YEAST MTR4_YEAST]] ATP-dependent RNA helicase required for the 3'-end formation of 5.8S RNA. Cofactor for the exosome complex that unwinds secondary structure in pre-rRNA. Required for nucleocytoplasmic transport of mRNA. May serve as a chaperone which translocates or normalizes the structure of mRNAs in preparation for export. Component of the TRAMP complex which has a poly(A) RNA polymerase activity and is involved in a post-transcriptional quality control mechanism limiting inappropriate expression of genetic information. Polyadenylation is required for the degradative activity of the exosome on several of its nuclear RNA substrates.<ref>PMID:15828860</ref> [[http://www.uniprot.org/uniprot/AIR2_YEAST AIR2_YEAST]] Component of the TRAMP (TRF4) complex which has a poly(A) RNA polymerase activity and is involved in a post-transcriptional quality control mechanism limiting inappropriate expression of genetic information. Polyadenylation is required for the degradative activity of the exosome on several of its nuclear RNA substrates like cryptic transcripts generated by RNA polymerase II and III, or hypomethylated pre-tRNAi-Met. Both complexes polyadenylate RNA processing and degradation intermediates of snRNAs, snoRNAs and mRNAs that accumulate in strains lacking a functional exosome. AIR2 also inhibits the methylation of NPL3 mediated by HMT1 through its interaction with HMT1.<ref>PMID:10896665</ref> <ref>PMID:15935758</ref> <ref>PMID:15935759</ref> <ref>PMID:15828860</ref> <ref>PMID:20696927</ref> 
[https://www.uniprot.org/uniprot/MTR4_YEAST MTR4_YEAST] ATP-dependent RNA helicase required for the 3'-end formation of 5.8S RNA. Cofactor for the exosome complex that unwinds secondary structure in pre-rRNA. Required for nucleocytoplasmic transport of mRNA. May serve as a chaperone which translocates or normalizes the structure of mRNAs in preparation for export. Component of the TRAMP complex which has a poly(A) RNA polymerase activity and is involved in a post-transcriptional quality control mechanism limiting inappropriate expression of genetic information. Polyadenylation is required for the degradative activity of the exosome on several of its nuclear RNA substrates.<ref>PMID:15828860</ref>  
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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==See Also==
==See Also==
*[[Helicase|Helicase]]
*[[Helicase 3D structures|Helicase 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Baker's yeast]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: RNA helicase]]
[[Category: Saccharomyces cerevisiae S288C]]
[[Category: Bonneau, F]]
[[Category: Bonneau F]]
[[Category: Conti, E]]
[[Category: Conti E]]
[[Category: Falk, S]]
[[Category: Falk S]]
[[Category: Hentschel, J]]
[[Category: Hentschel J]]
[[Category: Reichelt, P]]
[[Category: Reichelt P]]
[[Category: Weir, J R]]
[[Category: Weir JR]]
[[Category: Atpase]]
[[Category: Exosome]]
[[Category: Helicase]]
[[Category: Hydrolase]]
[[Category: Rna degradation]]

Revision as of 08:01, 22 March 2023

The molecular architecture of the TRAMP complex reveals the organization and interplay of its two catalytic activities

4u4c, resolution 2.40Å

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