7m1r
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==Crystal structure of a 6-phospho-beta-galactosidase from Bacillus licheniformis== | ==Crystal structure of a 6-phospho-beta-galactosidase from Bacillus licheniformis== | ||
| - | <StructureSection load='7m1r' size='340' side='right'caption='[[7m1r]]' scene=''> | + | <StructureSection load='7m1r' size='340' side='right'caption='[[7m1r]], [[Resolution|resolution]] 1.98Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7M1R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7M1R FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[7m1r]] is a 4 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=7M1R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7M1R FirstGlance]. <br> |
| - | </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=7m1r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7m1r OCA], [https://pdbe.org/7m1r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7m1r RCSB], [https://www.ebi.ac.uk/pdbsum/7m1r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7m1r ProSAT]</span></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]] 1.98Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></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=7m1r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7m1r OCA], [https://pdbe.org/7m1r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7m1r RCSB], [https://www.ebi.ac.uk/pdbsum/7m1r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7m1r ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/Q65NL9_BACLD Q65NL9_BACLD] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Bacterial glycoside hydrolase 1 (GH1) enzymes with 6-phospho-beta-galactosidase and 6-phospho-beta-glucosidase activities have the important task of releasing phosphorylated and nonphosphorylated monosaccharides into the cytoplasm. Curiously, dual 6-phospho-beta-galactosidase/6-phospho-beta-glucosidase (dual-phospho) enzymes have broad specificity and are able to hydrolyze galacto- and gluco-derived substrates. This study investigates the structure and substrate specificity of a GH family 1 enzyme from Bacillus licheniformis, hereafter known as BlBglC. The enzyme structure has been solved, and sequence analysis, molecular dynamics simulations, and binding free energy calculations offered evidence of dual-phospho activity. Both test ligands p-nitrophenyl-beta-d-galactoside-6-phosphate (PNP6Pgal) and p-nitrophenyl-beta-d-glucoside-6-phosphate (PNP6Pglc) demonstrated strong binding to BlBglC although the pose and interactions of the PNP6Pglc triplicates were slightly more consistent. Interestingly, known specificity-inducing residues, Gln23 and Trp433, bind strongly to the ligand O3 hydroxyl group in the PNP6Pgal-BlBglC complex and to the ligand O4 hydroxyl group in the PNP6Pglc-BlBglC complex. Additionally, the BlBglC-His124 residue is a major contributor of hydrogen bonds to the PNP6Pgal O3 hydroxyl group but does not form any hydrogen bonds with PNP6Pglc. On the other hand, BlBglC residues Tyr173, Tyr301, Gln302, and Thr321 form hydrogen bonds with PNP6Pglc but not PNP6Pgal. These findings provide important details of the broad specificity of dual-phospho activity GH1 enzymes. | ||
| + | |||
| + | Differences in Gluco and Galacto Substrate-Binding Interactions in a Dual 6Pbeta-Glucosidase/6Pbeta-Galactosidase Glycoside Hydrolase 1 Enzyme from Bacillus licheniformis.,Veldman W, Liberato MV, Souza VP, Almeida VM, Marana SR, Tastan Bishop O, Polikarpov I J Chem Inf Model. 2021 Aug 23. doi: 10.1021/acs.jcim.1c00413. PMID:34423980<ref>PMID:34423980</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 7m1r" style="background-color:#fffaf0;"></div> | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Galactosidase 3D structures|Galactosidase 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Bacillus licheniformis]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Liberato MV]] | [[Category: Liberato MV]] | ||
[[Category: Polikarpov I]] | [[Category: Polikarpov I]] | ||
[[Category: Popov A]] | [[Category: Popov A]] | ||
Current revision
Crystal structure of a 6-phospho-beta-galactosidase from Bacillus licheniformis
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