3t94

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<StructureSection load='3t94' size='340' side='right'caption='[[3t94]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
<StructureSection load='3t94' size='340' side='right'caption='[[3t94]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3t94]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_35091 Atcc 35091]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3T94 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3T94 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3t94]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharolobus_solfataricus Saccharolobus solfataricus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3T94 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3T94 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MTA:5-DEOXY-5-METHYLTHIOADENOSINE'>MTA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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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]] 1.452&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2a8y|2a8y]]</div></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=MTA:5-DEOXY-5-METHYLTHIOADENOSINE'>MTA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/S-methyl-5'-thioadenosine_phosphorylase S-methyl-5'-thioadenosine phosphorylase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.28 2.4.2.28] </span></td></tr>
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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=3t94 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t94 OCA], [https://pdbe.org/3t94 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3t94 RCSB], [https://www.ebi.ac.uk/pdbsum/3t94 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3t94 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=3t94 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t94 OCA], [https://pdbe.org/3t94 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3t94 RCSB], [https://www.ebi.ac.uk/pdbsum/3t94 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3t94 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[https://www.uniprot.org/uniprot/MTAP_SULSO MTAP_SULSO]] Catalyzes the reversible phosphorylation of S-methyl-5'-thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. Involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. Responsible for the first step in the methionine salvage pathway after MTA has been generated from S-adenosylmethionine. Has broad substrate specificity with 6-aminopurine nucleosides as preferred substrates.<ref>PMID:15819883</ref>
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[https://www.uniprot.org/uniprot/MTAP_SACS2 MTAP_SACS2] Catalyzes the reversible phosphorylation of S-methyl-5'-thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. Involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. Responsible for the first step in the methionine salvage pathway after MTA has been generated from S-adenosylmethionine. Has broad substrate specificity with 6-aminopurine nucleosides as preferred substrates.[HAMAP-Rule:MF_01963]<ref>PMID:15819883</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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5'-Deoxy-5'-methylthioadenosine phosphorylase (MTAP) catalyzes the phosphorolytic cleavage of 5'-deoxy-5'-methylthioadenosine (MTA), a byproduct of polyamine biosynthesis. The Sulfolobus sulfataricus genome encodes two MTAPs. SsMTAP I has broad substrate specifity, accepting guanosine, inosine, adenosine and MTA, while SsMTAP II is specific for MTA. SsMTAP I forms a donut-shaped hexamer, while SsMTAP II is a hexamer formed from trimers packed face to face. The structure of SsMTAP II was originally determined in space group P1 (PDB entry 2a8y) and showed R32 pseudosymmetry. Post-analysis using phenix.xtriage showed that the correct space group is C2. Here, the structure refined in space group C2 is reported and the factors that initially led to the incorrect space-group assignment are discussed.
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A corrected space group for Sulfolobus sulfataricus 5'-deoxy-5'-methylthioadenosine phosphorylase II.,Zhang Y, Zwart PH, Ealick SE Acta Crystallogr D Biol Crystallogr. 2012 Mar;68(Pt 3):249-52. Epub 2012 Feb 7. PMID:22349226<ref>PMID:22349226</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3t94" style="background-color:#fffaf0;"></div>
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==See Also==
==See Also==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Atcc 35091]]
 
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: S-methyl-5'-thioadenosine phosphorylase]]
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[[Category: Saccharolobus solfataricus]]
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[[Category: Ealick, S E]]
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[[Category: Ealick SE]]
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[[Category: Zhang, Y]]
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[[Category: Zhang Y]]
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[[Category: Alpha/beta]]
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[[Category: Beta barrel]]
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[[Category: Nucleoside phosphorylase]]
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[[Category: Transferase]]
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Revision as of 13:21, 14 March 2024

Crystal structure of 5'-deoxy-5'-methylthioadenosine phosphorylase (MTAP) II complexed with 5'-deoxy-5'-methylthioadenosine and sulfate

PDB ID 3t94

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