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1usw

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Revision as of 22:48, 9 September 2015

CRYSTAL STRUCTURE OF FERULIC ACID ESTERASE FROM ASPERGILLUS NIGER

Structural highlights

1usw is a 1 chain structure with sequence from A. niger. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Activity:	Feruloyl esterase, with EC number 3.1.1.73
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[FAEA_ASPNG] Involved in degradation of plant cell walls. Hydrolyzes the feruloyl-arabinose ester bond in arabinoxylans, and the feruloyl-galactose ester bond in pectin. Binds to cellulose.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7]

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

As a component of the array of enzymes produced by micro-organisms to deconstruct plant cell walls, feruloyl esterases hydrolyze phenolic groups involved in the cross-linking of arabinoxylan to other polymeric structures. This is important for opening the cell wall structure, making material more accessible to glycosyl hydrolases. Here, we describe the first crystal structure of the non-modular type-A feruloyl esterase from Aspergillus niger (AnFaeA) solved at 2.5A resolution. AnFaeA displays an alpha/beta hydrolase fold similar to that found in fungal lipases and different from that reported for other feruloyl esterases. Crystallographic and site-directed mutagenesis studies allow us to identify the catalytic triad (Ser133-His247-Asp194) that forms the catalytic machinery of this enzyme. The active-site cavity is confined by a lid (residues 68-80), on the analogy of lipases, and by a loop (residues 226-244) that confers plasticity to the substrate-binding site. The lid presents a high ratio of polar residues, which in addition to a unique N-glycosylation site stabilises the lid in an open conformation, conferring the esterase character to this enzyme. A putative model for bound 5,5'-diferulic acid-linked arabinoxylan has been built, pointing to the more relevant residues involved in substrate recognition. Comparison with structurally related lipases reveals that subtle amino acid and conformational changes within a highly conserved protein fold may produce protein variants endowed with new enzymatic properties, while comparison with functionally related proteins points to a functional convergence after evolutionary divergence within the feruloyl esterases family.

The crystal structure of feruloyl esterase A from Aspergillus niger suggests evolutive functional convergence in feruloyl esterase family.,Hermoso JA, Sanz-Aparicio J, Molina R, Juge N, Gonzalez R, Faulds CB J Mol Biol. 2004 Apr 30;338(3):495-506. PMID:15081808^[8]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ de Vries RP, Michelsen B, Poulsen CH, Kroon PA, van den Heuvel RH, Faulds CB, Williamson G, van den Hombergh JP, Visser J. The faeA genes from Aspergillus niger and Aspergillus tubingensis encode ferulic acid esterases involved in degradation of complex cell wall polysaccharides. Appl Environ Microbiol. 1997 Dec;63(12):4638-44. PMID:9406381
↑ de Vries RP, vanKuyk PA, Kester HC, Visser J. The Aspergillus niger faeB gene encodes a second feruloyl esterase involved in pectin and xylan degradation and is specifically induced in the presence of aromatic compounds. Biochem J. 2002 Apr 15;363(Pt 2):377-86. PMID:11931668
↑ Ralet MC, Faulds CB, Williamson G, Thibault JF. Degradation of feruloylated oligosaccharides from sugar-beet pulp and wheat bran by ferulic acid esterases from Aspergillus niger. Carbohydr Res. 1994 Oct 17;263(2):257-69. PMID:7805053
↑ Aliwan FO, Williamson G. Identification of active site residues in a ferulic acid esterase (FAE-III) from Aspergillus niger. Biochem Soc Trans. 1998 May;26(2):S164. PMID:9649839
↑ de Vries RP, vanKuyk PA, Kester HC, Visser J. The Aspergillus niger faeB gene encodes a second feruloyl esterase involved in pectin and xylan degradation and is specifically induced in the presence of aromatic compounds. Biochem J. 2002 Apr 15;363(Pt 2):377-86. PMID:11931668
↑ Hermoso JA, Sanz-Aparicio J, Molina R, Juge N, Gonzalez R, Faulds CB. The crystal structure of feruloyl esterase A from Aspergillus niger suggests evolutive functional convergence in feruloyl esterase family. J Mol Biol. 2004 Apr 30;338(3):495-506. PMID:15081808 doi:10.1016/j.jmb.2004.03.003
↑ Benoit I, Asther M, Sulzenbacher G, Record E, Marmuse L, Parsiegla G, Gimbert I, Asther M, Bignon C. Respective importance of protein folding and glycosylation in the thermal stability of recombinant feruloyl esterase A. FEBS Lett. 2006 Oct 30;580(25):5815-21. Epub 2006 Sep 27. PMID:17027758 doi:10.1016/j.febslet.2006.09.039
↑ Hermoso JA, Sanz-Aparicio J, Molina R, Juge N, Gonzalez R, Faulds CB. The crystal structure of feruloyl esterase A from Aspergillus niger suggests evolutive functional convergence in feruloyl esterase family. J Mol Biol. 2004 Apr 30;338(3):495-506. PMID:15081808 doi:10.1016/j.jmb.2004.03.003

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1usw"

@@ Line 2: / Line 2: @@
 <StructureSection load='1usw' size='340' side='right' caption='[[1usw]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1usw]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aspergillus_niger Aspergillus niger]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1USW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1USW FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1usw]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/A._niger A. niger]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1USW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1USW FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Feruloyl_esterase Feruloyl esterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.73 3.1.1.73] </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=1usw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1usw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1usw RCSB], [http://www.ebi.ac.uk/pdbsum/1usw PDBsum]</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=1usw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1usw OCA], [http://pdbe.org/1usw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1usw RCSB], [http://www.ebi.ac.uk/pdbsum/1usw PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 27: / Line 27: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1usw" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Aspergillus niger]]
+[[Category: A. niger]]
 [[Category: Feruloyl esterase]]
 [[Category: Faulds, C]]

1usw

From Proteopedia

Revision as of 22:48, 9 September 2015

CRYSTAL STRUCTURE OF FERULIC ACID ESTERASE FROM ASPERGILLUS NIGER

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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