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| | <StructureSection load='5ykb' size='340' side='right'caption='[[5ykb]], [[Resolution|resolution]] 2.76Å' scene=''> | | <StructureSection load='5ykb' size='340' side='right'caption='[[5ykb]], [[Resolution|resolution]] 2.76Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5ykb]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Deira Deira]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=5gtv 5gtv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5YKB OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5YKB FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5ykb]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans_R1 Deinococcus radiodurans R1]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=5gtv 5gtv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5YKB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5YKB FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.76Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4tvu|4tvu]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Maltose_alpha-D-glucosyltransferase Maltose alpha-D-glucosyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.4.99.16 5.4.99.16] </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=5ykb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ykb OCA], [https://pdbe.org/5ykb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ykb RCSB], [https://www.ebi.ac.uk/pdbsum/5ykb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ykb ProSAT]</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=5ykb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ykb OCA], [http://pdbe.org/5ykb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ykb RCSB], [http://www.ebi.ac.uk/pdbsum/5ykb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ykb ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/I3NX86_DEIRA I3NX86_DEIRA] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Deira]] | + | [[Category: Deinococcus radiodurans R1]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Maltose alpha-D-glucosyltransferase]]
| + | [[Category: Chow SY]] |
| - | [[Category: Chow, S Y]] | + | [[Category: Hsieh YC]] |
| - | [[Category: Hsieh, Y C]] | + | [[Category: Liaw SH]] |
| - | [[Category: Liaw, S H]] | + | |
| - | [[Category: Glycoside hydrolase family 13]]
| + | |
| - | [[Category: Isomerase]]
| + | |
| - | [[Category: Trehalose synthase]]
| + | |
| Structural highlights
Function
I3NX86_DEIRA
Publication Abstract from PubMed
Trehalose synthase (TS) catalyzes the reversible conversion of maltose to trehalose and belongs to glycoside hydrolase family 13 (GH13). Previous mechanistic analysis suggested a rate-limiting protein conformational change, which is probably the opening and closing of the active site. Consistently, crystal structures of Deinococcus radiodurans TS (DrTS) in complex with the inhibitor Tris displayed an enclosed active site for catalysis of the intramoleular isomerization. In this study, the apo structure of the DrTS N253F mutant displays a new open conformation with an empty active site. Analysis of these structures suggests that substrate binding induces a domain rotation to close the active site. Such a substrate-induced domain rotation has also been observed in some other GH13 enzymes.
The N253F mutant structure of trehalose synthase from Deinococcus radiodurans reveals an open active-site topology.,Chow SY, Wang YL, Hsieh YC, Lee GC, Liaw SH Acta Crystallogr F Struct Biol Commun. 2017 Nov 1;73(Pt 11):588-594. doi:, 10.1107/S2053230X17014303. Epub 2017 Oct 20. PMID:29095151[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Chow SY, Wang YL, Hsieh YC, Lee GC, Liaw SH. The N253F mutant structure of trehalose synthase from Deinococcus radiodurans reveals an open active-site topology. Acta Crystallogr F Struct Biol Commun. 2017 Nov 1;73(Pt 11):588-594. doi:, 10.1107/S2053230X17014303. Epub 2017 Oct 20. PMID:29095151 doi:http://dx.doi.org/10.1107/S2053230X17014303
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