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| | <StructureSection load='2wc7' size='340' side='right'caption='[[2wc7]], [[Resolution|resolution]] 2.37Å' scene=''> | | <StructureSection load='2wc7' size='340' side='right'caption='[[2wc7]], [[Resolution|resolution]] 2.37Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2wc7]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Nospu Nospu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WC7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WC7 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2wc7]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Nostoc_punctiforme Nostoc punctiforme]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WC7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WC7 FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2wkg|2wkg]], [[2wcs|2wcs]]</div></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]] 2.37Å</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Cyclomaltodextrinase Cyclomaltodextrinase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.54 3.2.1.54] </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=2wc7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wc7 OCA], [https://pdbe.org/2wc7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wc7 RCSB], [https://www.ebi.ac.uk/pdbsum/2wc7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wc7 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=2wc7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wc7 OCA], [https://pdbe.org/2wc7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wc7 RCSB], [https://www.ebi.ac.uk/pdbsum/2wc7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wc7 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/B2IUW9_NOSP7 B2IUW9_NOSP7] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Cyclomaltodextrinase]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Nospu]] | + | [[Category: Nostoc punctiforme]] |
| - | [[Category: Choi, J H]] | + | [[Category: Choi J-H]] |
| - | [[Category: Dumbrepatil, A B]] | + | [[Category: Dumbrepatil A-B]] |
| - | [[Category: Park, K H]] | + | [[Category: Park K-H]] |
| - | [[Category: Song, H N]] | + | [[Category: Song H-N]] |
| - | [[Category: Woo, E J]] | + | [[Category: Woo E-J]] |
| - | [[Category: Cd/pul-hydrolyzing enzyme]]
| + | |
| - | [[Category: Glycosidase]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Neopullulanse]]
| + | |
| Structural highlights
Function
B2IUW9_NOSP7
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The debranching enzyme Nostoc punctiforme debranching enzyme (NPDE) from the cyanobacterium Nostoc punctiforme (PCC73102) hydrolyzes the alpha-1,6 glycosidic linkages of malto-oligosaccharides. Despite its high homology to cyclodextrin/pullulan (CD/PUL)-hydrolyzing enzymes from glycosyl hydrolase 13 family (GH-13), NPDE exhibits a unique catalytic preference for longer malto-oligosaccharides (>G8), performing hydrolysis without the transgylcosylation or CD-hydrolyzing activities of other GH-13 enzymes. To investigate the molecular basis for the property of NPDE, we determined the structure of NPDE at 2.37-A resolution. NPDE lacks the typical N-terminal domain of other CD/PUL-hydrolyzing enzymes and forms an elongated dimer in a head-to-head configuration. The unique orientation of residues 25-55 in NPDE yields an extended substrate binding groove from the catalytic center to the dimeric interface. The substrate binding groove with a lengthy cavity beyond the -1 subsite exhibits a suitable architecture for binding longer malto-oligosaccharides (>G8). These structural results may provide a molecular basis for the substrate specificity and catalytic function of this cyanobacterial enzyme, distinguishing it from the classical neopullulanases and CD/PUL-hydrolyzing enzymes. Proteins 2009. (c) 2009 Wiley-Liss, Inc.
Structural features of the Nostoc punctiforme debranching enzyme reveal the basis of its mechanism and substrate specificity.,Dumbrepatil AB, Choi JH, Park JT, Kim MJ, Kim TJ, Woo EJ, Park KH Proteins. 2009 Jul 20. PMID:19768689[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Dumbrepatil AB, Choi JH, Park JT, Kim MJ, Kim TJ, Woo EJ, Park KH. Structural features of the Nostoc punctiforme debranching enzyme reveal the basis of its mechanism and substrate specificity. Proteins. 2009 Jul 20. PMID:19768689 doi:10.1002/prot.22548
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