9m0e
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
| - | '''Unreleased structure''' | ||
| - | + | ==Enhancing the synthesis efficiency of galacto-oligosaccharides of a beta-galactosidase from Paenibacillus barengoltzii by engineering the active and distal sites== | |
| + | <StructureSection load='9m0e' size='340' side='right'caption='[[9m0e]], [[Resolution|resolution]] 2.80Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[9m0e]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Paenibacillus_barengoltzii Paenibacillus barengoltzii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9M0E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9M0E FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.8Å</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=9m0e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9m0e OCA], [https://pdbe.org/9m0e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9m0e RCSB], [https://www.ebi.ac.uk/pdbsum/9m0e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9m0e ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/A0A0C5GSQ2_9BACL A0A0C5GSQ2_9BACL] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Previously, a glycoside hydrolase (GH) family 2 beta-galactosidase (PbBGal2A) from Paenibacillus barengoltzii is characterized for its high transglycosylation capability. Here, the cryo-electron microscopy (cryo-EM) structure of PbBGal2A was determined, revealing an enlarged acidic catalytic pocket that facilitate the binding of carbohydrate substrates. Three structure-based strategies as well as machine learning MECE platform (method for enhancing the catalytic efficiency) were employed to identify active and distal mutations with enhanced galacto-oligosaccharides (GOS) synthesis and their synergistic effects were evaluated. The best H331V mutation yielded a maximum GOS production of 76.57 % at 4 h when 35 % (w/v) of lactose was used as a substrate. Molecular dynamics (MD) simulation analysis further indicated that distal mutations increase the rigidity of the loops surrounding the catalytic pocket. This research sheds light on the structural and catalytic mechanisms of PbBGal2A, highlighting the importance of both active and distal mutations in the efficient design of customized beta-galactosidases. | ||
| - | + | Enhancing the synthesis efficiency of galacto-oligosaccharides of a beta-galactosidase from Paenibacillus barengoltzii by engineering the active and distal sites.,Yu H, Wang Y, Yang Z, Ying J, Guan F, Liu B, Miao M, Mohamed A, Wei X, Yang Y, Liu X, Sun L, Jiang Z, Yang S, Xin F Food Chem. 2025 Apr 4;483:144208. doi: 10.1016/j.foodchem.2025.144208. PMID:40220440<ref>PMID:40220440</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 9m0e" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Paenibacillus barengoltzii]] | ||
| + | [[Category: Liu X]] | ||
| + | [[Category: Wang YL]] | ||
| + | [[Category: Xin FJ]] | ||
| + | [[Category: Yang ZS]] | ||
| + | [[Category: Yu HY]] | ||
Current revision
Enhancing the synthesis efficiency of galacto-oligosaccharides of a beta-galactosidase from Paenibacillus barengoltzii by engineering the active and distal sites
| |||||||||||
