2vzr

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(Difference between revisions)

Revision as of 08:05, 9 February 2016

C-TERMINAL CBM35 FROM AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA IN COMPLEX WITH GLUCURONIC ACID

Structural highlights

2vzr is a 2 chain structure with sequence from "streptomyces_orientalis"_pittenger_and_brigham_1956 "streptomyces orientalis" pittenger and brigham 1956. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	2vzt, 2vzu, 2vzq, 2vzo, 2vzs, 2vzp, 2vzv
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[EBDG_AMYOR] Hydrolyzes chitosan and chitooligosaccharides with retention of anomeric configuration. Has maximum activity on chitotetraose, chitopentaose and their corresponding alcohols, with a slight decrease in the rate of hydrolysis on longer chains. Has no activity against beta-D-glucopyranoside, beta-D-xylopyranoside, beta-D-mannoside, beta-D-glucuronide, beta-D-galactoside, beta-D-N-acetylgalactosamide, beta-D-N-acetylglucosaminide and alpha-D-N-acetylglucosaminide.^[1] ^[2]

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

Enzymes that hydrolyze complex carbohydrates play important roles in numerous biological processes that result in the maintenance of marine and terrestrial life. These enzymes often contain noncatalytic carbohydrate binding modules (CBMs) that have important substrate-targeting functions. In general, there is a tight correlation between the ligands recognized by bacterial CBMs and the substrate specificity of the appended catalytic modules. Through high-resolution structural studies, we demonstrate that the architecture of the ligand binding sites of 4 distinct family 35 CBMs (CBM35s), appended to 3 plant cell wall hydrolases and the exo-beta-D-glucosaminidase CsxA, which contributes to the detoxification and metabolism of an antibacterial fungal polysaccharide, is highly conserved and imparts specificity for glucuronic acid and/or Delta4,5-anhydrogalaturonic acid (Delta4,5-GalA). Delta4,5-GalA is released from pectin by the action of pectate lyases and as such acts as a signature molecule for plant cell wall degradation. Thus, the CBM35s appended to the 3 plant cell wall hydrolases, rather than targeting the substrates of the cognate catalytic modules, direct their appended enzymes to regions of the plant that are being actively degraded. Significantly, the CBM35 component of CsxA anchors the enzyme to the bacterial cell wall via its capacity to bind uronic acid sugars. This latter observation reveals an unusual mechanism for bacterial cell wall enzyme attachment. This report shows that the biological role of CBM35s is not dictated solely by their carbohydrate specificities but also by the context of their target ligands.

Evidence that family 35 carbohydrate binding modules display conserved specificity but divergent function.,Montanier C, van Bueren AL, Dumon C, Flint JE, Correia MA, Prates JA, Firbank SJ, Lewis RJ, Grondin GG, Ghinet MG, Gloster TM, Herve C, Knox JP, Talbot BG, Turkenburg JP, Kerovuo J, Brzezinski R, Fontes CM, Davies GJ, Boraston AB, Gilbert HJ Proc Natl Acad Sci U S A. 2009 Mar 3;106(9):3065-70. Epub 2009 Feb 13. PMID:19218457^[3]

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

References

↑ Cote N, Fleury A, Dumont-Blanchette E, Fukamizo T, Mitsutomi M, Brzezinski R. Two exo-beta-D-glucosaminidases/exochitosanases from actinomycetes define a new subfamily within family 2 of glycoside hydrolases. Biochem J. 2006 Mar 15;394(Pt 3):675-86. PMID:16316314 doi:http://dx.doi.org/10.1042/BJ20051436
↑ Nanjo F, Katsumi R, Sakai K. Purification and characterization of an exo-beta-D-glucosaminidase, a novel type of enzyme, from Nocardia orientalis. J Biol Chem. 1990 Jun 15;265(17):10088-94. PMID:2351651
↑ Montanier C, van Bueren AL, Dumon C, Flint JE, Correia MA, Prates JA, Firbank SJ, Lewis RJ, Grondin GG, Ghinet MG, Gloster TM, Herve C, Knox JP, Talbot BG, Turkenburg JP, Kerovuo J, Brzezinski R, Fontes CM, Davies GJ, Boraston AB, Gilbert HJ. Evidence that family 35 carbohydrate binding modules display conserved specificity but divergent function. Proc Natl Acad Sci U S A. 2009 Mar 3;106(9):3065-70. Epub 2009 Feb 13. PMID:19218457

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/2vzr"

@@ Line 2: / Line 2: @@
 <StructureSection load='2vzr' size='340' side='right' caption='[[2vzr]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2vzr]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Amycolatopsis_orientalis Amycolatopsis orientalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VZR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2VZR FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2vzr]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"streptomyces_orientalis"_pittenger_and_brigham_1956 "streptomyces orientalis" pittenger and brigham 1956]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VZR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2VZR FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GCU:D-GLUCURONIC+ACID'>GCU</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2vzt|2vzt]], [[2vzu|2vzu]], [[2vzq|2vzq]], [[2vzo|2vzo]], [[2vzs|2vzs]], [[2vzp|2vzp]], [[2vzv|2vzv]]</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=2vzr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vzr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2vzr RCSB], [http://www.ebi.ac.uk/pdbsum/2vzr 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=2vzr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vzr OCA], [http://pdbe.org/2vzr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2vzr RCSB], [http://www.ebi.ac.uk/pdbsum/2vzr PDBsum]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/Q56F26_AMYOR Q56F26_AMYOR]] Hydrolyzes chitosan and chitooligosaccharides with retention of anomeric configuration. Has maximum activity on chitotetraose, chitopentaose and their corresponding alcohols, with a slight decrease in the rate of hydrolysis on longer chains. Has no activity against beta-D-glucopyranoside, beta-D-xylopyranoside, beta-D-mannoside, beta-D-glucuronide, beta-D-galactoside, beta-D-N-acetylgalactosamide, beta-D-N-acetylglucosaminide and alpha-D-N-acetylglucosaminide.<ref>PMID:16316314</ref> <ref>PMID:2351651</ref>
+[[http://www.uniprot.org/uniprot/EBDG_AMYOR EBDG_AMYOR]] Hydrolyzes chitosan and chitooligosaccharides with retention of anomeric configuration. Has maximum activity on chitotetraose, chitopentaose and their corresponding alcohols, with a slight decrease in the rate of hydrolysis on longer chains. Has no activity against beta-D-glucopyranoside, beta-D-xylopyranoside, beta-D-mannoside, beta-D-glucuronide, beta-D-galactoside, beta-D-N-acetylgalactosamide, beta-D-N-acetylglucosaminide and alpha-D-N-acetylglucosaminide.<ref>PMID:16316314</ref> <ref>PMID:2351651</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 17: / Line 17: @@
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
-</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2vzr ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">
@@ 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 2vzr" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Amycolatopsis orientalis]]
+[[Category: Streptomyces orientalis pittenger and brigham 1956]]
 [[Category: Boraston, A B]]
 [[Category: Bueren, A Lammerts Van]]

2vzr

From Proteopedia

Revision as of 08:05, 9 February 2016

C-TERMINAL CBM35 FROM AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA IN COMPLEX WITH GLUCURONIC ACID

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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