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| | ==Structure of Beta-1,4-Galactanase== | | ==Structure of Beta-1,4-Galactanase== |
| - | <StructureSection load='2j74' size='340' side='right' caption='[[2j74]], [[Resolution|resolution]] 2.60Å' scene=''> | + | <StructureSection load='2j74' size='340' side='right'caption='[[2j74]], [[Resolution|resolution]] 2.60Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2j74]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"clostridium_licheniforme"_weigmann_1898 "clostridium licheniforme" weigmann 1898]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J74 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2J74 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2j74]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_licheniformis Bacillus licheniformis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J74 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2J74 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=B2G:GALACTOBIOSE'>B2G</scene>, <scene name='pdbligand=B4G:GALACTOTRIOSE'>B4G</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</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]] 2.6Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ur0|1ur0]], [[1ur4|1ur4]], [[2ccr|2ccr]]</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=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=PRD_900113:4beta-beta-galactobiose'>PRD_900113</scene>, <scene name='pdbligand=PRD_900114:4beta-beta-galactotriose'>PRD_900114</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Arabinogalactan_endo-beta-1,4-galactanase Arabinogalactan endo-beta-1,4-galactanase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.89 3.2.1.89] </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=2j74 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j74 OCA], [https://pdbe.org/2j74 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2j74 RCSB], [https://www.ebi.ac.uk/pdbsum/2j74 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2j74 ProSAT]</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=2j74 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j74 OCA], [http://pdbe.org/2j74 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2j74 RCSB], [http://www.ebi.ac.uk/pdbsum/2j74 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2j74 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/GANB_BACLD GANB_BACLD] Involved in galactan degradation (PubMed:15312766). Degrades arabinose-free galactan to galactooligosaccharides, producing galactotetraose as the main product along with galactotriose, galactobiose, and galactose (PubMed:15312766). May hydrolyze the beta-1,4-galactan linkages of the galactan portion of arabinogalactan type I, a pectic plant polysaccharide from which most of the arabinose has been removed (By similarity).[UniProtKB:O07013]<ref>PMID:15312766</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </div> | | </div> |
| | <div class="pdbe-citations 2j74" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 2j74" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Beta-1%2C4-galactanase|Beta-1%2C4-galactanase]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Clostridium licheniforme weigmann 1898]] | + | [[Category: Bacillus licheniformis]] |
| - | [[Category: Arabinogalactan endo-beta-1,4-galactanase]] | + | [[Category: Large Structures]] |
| - | [[Category: Christensen, L L.H]] | + | [[Category: Christensen LLH]] |
| - | [[Category: Jorgensen, C T]] | + | [[Category: De Maria L]] |
| - | [[Category: Larsen, S]] | + | [[Category: Jorgensen CT]] |
| - | [[Category: Leggio, L Lo]] | + | [[Category: Larsen S]] |
| - | [[Category: Maria, L De]] | + | [[Category: Le Nours J]] |
| - | [[Category: Nours, J Le]] | + | [[Category: Lo Leggio L]] |
| - | [[Category: Welner, D]] | + | [[Category: Welner D]] |
| - | [[Category: 4-galactanase]]
| + | |
| - | [[Category: Beta-1]]
| + | |
| - | [[Category: Galactan]]
| + | |
| - | [[Category: Gh-a]]
| + | |
| - | [[Category: Glycoside hydrolase family 53]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| Structural highlights
Function
GANB_BACLD Involved in galactan degradation (PubMed:15312766). Degrades arabinose-free galactan to galactooligosaccharides, producing galactotetraose as the main product along with galactotriose, galactobiose, and galactose (PubMed:15312766). May hydrolyze the beta-1,4-galactan linkages of the galactan portion of arabinogalactan type I, a pectic plant polysaccharide from which most of the arabinose has been removed (By similarity).[UniProtKB:O07013][1]
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
Microbial beta-1,4-galactanases are glycoside hydrolases belonging to family 53, which degrade galactan and arabinogalactan side chains in the hairy regions of pectin, a major plant cell wall component. They belong to the larger clan GH-A of glycoside hydrolases, which cover many different poly- and oligosaccharidase specificities. Crystallographic complexes of Bacillus licheniformis beta-1,4-galactanase and its inactive nucleophile mutant have been obtained with methyl-beta(1-->4)-galactotetraoside, providing, for the first time, information on substrate binding to the aglycone side of the beta-1,4-galactanase substrate binding groove. Using the experimentally determined subsites as a starting point, a beta(1-->4)-galactononaose was built into the structure and subjected to molecular dynamics simulations giving further insight into the residues involved in the binding of the polysaccharide from subsite -4 to +5. In particular, this analysis newly identified a conserved beta-turn, which contributes to subsites -2 to +3. This beta-turn is unique to family 53 beta-1,4-galactanases among all clan GH-A families that have been structurally characterized and thus might be a structural signature for endo-beta-1,4-galactanase specificity.
Investigating the binding of beta-1,4-galactan to Bacillus licheniformis beta-1,4-galactanase by crystallography and computational modeling.,Le Nours J, De Maria L, Welner D, Jorgensen CT, Christensen LL, Borchert TV, Larsen S, Lo Leggio L Proteins. 2009 Jun;75(4):977-89. PMID:19089956[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Ryttersgaard C, Le Nours J, Lo Leggio L, Jorgensen CT, Christensen LL, Bjornvad M, Larsen S. The structure of endo-beta-1,4-galactanase from Bacillus licheniformis in complex with two oligosaccharide products. J Mol Biol. 2004 Jul 30;341(1):107-17. PMID:15312766 doi:http://dx.doi.org/10.1016/j.jmb.2004.05.017
- ↑ Le Nours J, De Maria L, Welner D, Jorgensen CT, Christensen LL, Borchert TV, Larsen S, Lo Leggio L. Investigating the binding of beta-1,4-galactan to Bacillus licheniformis beta-1,4-galactanase by crystallography and computational modeling. Proteins. 2009 Jun;75(4):977-89. PMID:19089956 doi:10.1002/prot.22310
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