1st0

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{{STRUCTURE_1st0| PDB=1st0 | SCENE= }}
 
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===Structure of DcpS bound to m7GpppG===
 
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{{ABSTRACT_PUBMED_15068804}}
 
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==Function==
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==Structure of DcpS bound to m7GpppG==
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[[http://www.uniprot.org/uniprot/DCPS_HUMAN DCPS_HUMAN]] Decapping scavenger enzyme that catalyzes the cleavage of a residual cap structure following the degradation of mRNAs by the 3'->5' exosome-mediated mRNA decay pathway. Hydrolyzes cap analog structures like 7-methylguanosine nucleoside triphosphate (m7GpppG) with up to 10 nucleotide substrates (small capped oligoribonucleotides) and specifically releases 5'-phosphorylated RNA fragments and 7-methylguanosine monophosphate (m7GMP). Cleaves cap analog structures like tri-methyl guanosine nucleoside triphosphate (m3(2,2,7)GpppG) with very poor efficiency. Does not hydrolyze unmethylated cap analog (GpppG) and shows no decapping activity on intact m7GpppG-capped mRNA molecules longer than 25 nucleotides. Does not hydrolyze 7-methylguanosine diphosphate (m7GDP) to m7GMP (PubMed:22985415). May also play a role in the 5'->3 mRNA decay pathway; m7GDP, the downstream product released by the 5'->3' mRNA mediated decapping activity, may be also converted by DCPS to m7GMP (PubMed:14523240). Binds to m7GpppG and strongly to m7GDP. Plays a role in first intron splicing of pre-mRNAs. Inhibits activation-induced cell death.<ref>PMID:12198172</ref> <ref>PMID:12871939</ref> <ref>PMID:11747811</ref> <ref>PMID:14523240</ref> <ref>PMID:15273322</ref> <ref>PMID:15383679</ref> <ref>PMID:16140270</ref> <ref>PMID:18426921</ref> <ref>PMID:22985415</ref> <ref>PMID:15769464</ref>
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<StructureSection load='1st0' size='340' side='right'caption='[[1st0]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[1st0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The February 2007 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Exosomes'' by David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2007_2 10.2210/rcsb_pdb/mom_2007_2]. The January 2012 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Messenger RNA Capping'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2012_1 10.2210/rcsb_pdb/mom_2012_1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ST0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ST0 FirstGlance]. <br>
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[[1st0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The February 2007 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Exosomes'' by David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2007_2 10.2210/rcsb_pdb/mom_2007_2]. The January 2012 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Messenger RNA Capping'' by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2012_1 10.2210/rcsb_pdb/mom_2012_1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ST0 OCA].
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</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>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GTG:7-METHYL-GUANOSINE-5-TRIPHOSPHATE-5-GUANOSINE'>GTG</scene>, <scene name='pdbligand=YT3:YTTRIUM+(III)+ION'>YT3</scene></td></tr>
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==Reference==
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1st0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1st0 OCA], [https://pdbe.org/1st0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1st0 RCSB], [https://www.ebi.ac.uk/pdbsum/1st0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1st0 ProSAT]</span></td></tr>
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<ref group="xtra">PMID:015068804</ref><references group="xtra"/><references/>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/DCPS_HUMAN DCPS_HUMAN] Decapping scavenger enzyme that catalyzes the cleavage of a residual cap structure following the degradation of mRNAs by the 3'->5' exosome-mediated mRNA decay pathway. Hydrolyzes cap analog structures like 7-methylguanosine nucleoside triphosphate (m7GpppG) with up to 10 nucleotide substrates (small capped oligoribonucleotides) and specifically releases 5'-phosphorylated RNA fragments and 7-methylguanosine monophosphate (m7GMP). Cleaves cap analog structures like tri-methyl guanosine nucleoside triphosphate (m3(2,2,7)GpppG) with very poor efficiency. Does not hydrolyze unmethylated cap analog (GpppG) and shows no decapping activity on intact m7GpppG-capped mRNA molecules longer than 25 nucleotides. Does not hydrolyze 7-methylguanosine diphosphate (m7GDP) to m7GMP (PubMed:22985415). May also play a role in the 5'->3 mRNA decay pathway; m7GDP, the downstream product released by the 5'->3' mRNA mediated decapping activity, may be also converted by DCPS to m7GMP (PubMed:14523240). Binds to m7GpppG and strongly to m7GDP. Plays a role in first intron splicing of pre-mRNAs. Inhibits activation-induced cell death.<ref>PMID:12198172</ref> <ref>PMID:12871939</ref> <ref>PMID:11747811</ref> <ref>PMID:14523240</ref> <ref>PMID:15273322</ref> <ref>PMID:15383679</ref> <ref>PMID:16140270</ref> <ref>PMID:18426921</ref> <ref>PMID:22985415</ref> <ref>PMID:15769464</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/st/1st0_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1st0 ConSurf].
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Exosomes]]
[[Category: Exosomes]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Large Structures]]
[[Category: Messenger RNA Capping]]
[[Category: Messenger RNA Capping]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Fabrega, C.]]
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[[Category: Fabrega C]]
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[[Category: Gu, M.]]
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[[Category: Gu M]]
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[[Category: Kiledjian, M.]]
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[[Category: Kiledjian M]]
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[[Category: Lima, C D.]]
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[[Category: Lima CD]]
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[[Category: Liu, H.]]
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[[Category: Liu H]]
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[[Category: Liu, S W.]]
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[[Category: Liu SW]]
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[[Category: Cap]]
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[[Category: Decapping]]
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[[Category: Exosome]]
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[[Category: Hit protein]]
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[[Category: Messenger rna]]
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[[Category: Mrna]]
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[[Category: Rna binding protein]]
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[[Category: Rna decay]]
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Current revision

Structure of DcpS bound to m7GpppG

PDB ID 1st0

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