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| | ==Crystal structure of glucuronoyl esterase S213A mutant from Sporotrichum thermophile determined at 1.9 A resolution== | | ==Crystal structure of glucuronoyl esterase S213A mutant from Sporotrichum thermophile determined at 1.9 A resolution== |
| - | <StructureSection load='4g4i' size='340' side='right' caption='[[4g4i]], [[Resolution|resolution]] 1.90Å' scene=''> | + | <StructureSection load='4g4i' size='340' side='right'caption='[[4g4i]], [[Resolution|resolution]] 1.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4g4i]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Myctt Myctt]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4G4I OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4G4I FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4g4i]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermothelomyces_thermophilus_ATCC_42464 Thermothelomyces thermophilus ATCC 42464]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4G4I OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4G4I FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | + | </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>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4g4g|4g4g]], [[4g4j|4g4j]]</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=4g4i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4g4i OCA], [https://pdbe.org/4g4i PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4g4i RCSB], [https://www.ebi.ac.uk/pdbsum/4g4i PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4g4i ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MYCTH_55568 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=573729 MYCTT])</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=4g4i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4g4i OCA], [http://pdbe.org/4g4i PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4g4i RCSB], [http://www.ebi.ac.uk/pdbsum/4g4i PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4g4i ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CIP2_THIHA CIP2_THIHA]] Glucuronoyl esterase which may play a significant role in biomass degradation, as it is considered to disconnect hemicellulose from lignin through the hydrolysis of the ester bond between 4-O-methyl-D-glucuronic acid residues of glucuronoxylans and aromatic alcohols of lignin.<ref>PMID:20473662</ref> | + | [https://www.uniprot.org/uniprot/GCE2_MYCTT GCE2_MYCTT] Glucuronoyl esterase which may play a significant role in biomass degradation, as it is considered to disconnect hemicellulose from lignin through the hydrolysis of the ester bond between 4-O-methyl-D-glucuronic acid residues of glucuronoxylans and aromatic alcohols of lignin.<ref>PMID:20473662</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| - | *[[Methylesterase|Methylesterase]] | + | *[[Methylesterase 3D structures|Methylesterase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Myctt]] | + | [[Category: Large Structures]] |
| - | [[Category: Charvagi, M D]] | + | [[Category: Thermothelomyces thermophilus ATCC 42464]] |
| - | [[Category: Christakopoulos, P]] | + | [[Category: Charvagi MD]] |
| - | [[Category: Chrysina, E D]] | + | [[Category: Christakopoulos P]] |
| - | [[Category: Dimarogona, M]] | + | [[Category: Chrysina ED]] |
| - | [[Category: Topakas, E]] | + | [[Category: Dimarogona M]] |
| - | [[Category: 3-layer alpha/beta/alpha sandwich]]
| + | [[Category: Topakas E]] |
| - | [[Category: Alpha/beta hydrolase]]
| + | |
| - | [[Category: Glucuronoyl esterase]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Rossmann fold]]
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| Structural highlights
Function
GCE2_MYCTT Glucuronoyl esterase which may play a significant role in biomass degradation, as it is considered to disconnect hemicellulose from lignin through the hydrolysis of the ester bond between 4-O-methyl-D-glucuronic acid residues of glucuronoxylans and aromatic alcohols of lignin.[1]
Publication Abstract from PubMed
The increasing demand for the development of efficient biocatalysts is a consequence of their broad industrial applications. Typical difficulties that are encountered during their exploitation in a variety of processes are interconnected with factors such as temperature, pH, product inhibitors etc. To eliminate these, research has been directed towards the identification of new enzymes that would comply with the required standards. To this end, the recently discovered glucuronoyl esterases (GEs) are an enigmatic family within the carbohydrate esterase (CE) family. Structures of the thermophilic StGE2 esterase from Myceliophthora thermophila (synonym Sporotrichum thermophile), a member of the CE15 family, and its S213A mutant were determined at 1.55 and 1.9 A resolution, respectively. The first crystal structure of the S213A mutant in complex with a substrate analogue, methyl 4-O-methyl-beta-D-glucopyranuronate, was determined at 2.35 A resolution. All of the three-dimensional protein structures have an alpha/beta-hydrolase fold with a three-layer alphabetaalpha-sandwich architecture and a Rossmann topology and comprise one molecule per asymmetric unit. These are the first crystal structures of a thermophilic GE both in an unliganded form and bound to a substrate analogue, thus unravelling the organization of the catalytic triad residues and their neighbours lining the active site. The knowledge derived offers novel insights into the key structural elements that drive the hydrolysis of glucuronic acid esters.
The structure of a novel glucuronoyl esterase from Myceliophthora thermophila gives new insights into its role as a potential biocatalyst.,Charavgi MD, Dimarogona M, Topakas E, Christakopoulos P, Chrysina ED Acta Crystallogr D Biol Crystallogr. 2013 Jan;69(Pt 1):63-73. doi:, 10.1107/S0907444912042400. Epub 2012 Dec 20. PMID:23275164[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Topakas E, Moukouli M, Dimarogona M, Vafiadi C, Christakopoulos P. Functional expression of a thermophilic glucuronyl esterase from Sporotrichum thermophile: identification of the nucleophilic serine. Appl Microbiol Biotechnol. 2010 Aug;87(5):1765-72. doi:, 10.1007/s00253-010-2655-7. Epub 2010 May 16. PMID:20473662 doi:http://dx.doi.org/10.1007/s00253-010-2655-7
- ↑ Charavgi MD, Dimarogona M, Topakas E, Christakopoulos P, Chrysina ED. The structure of a novel glucuronoyl esterase from Myceliophthora thermophila gives new insights into its role as a potential biocatalyst. Acta Crystallogr D Biol Crystallogr. 2013 Jan;69(Pt 1):63-73. doi:, 10.1107/S0907444912042400. Epub 2012 Dec 20. PMID:23275164 doi:http://dx.doi.org/10.1107/S0907444912042400
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