Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10872192 | FEBS Letters | 2009 | 6 Pages |
Abstract
The exopolygalacturonase from Thermotoga maritima is the most thermoactive and thermostable pectinase known to date. Here we present its crystal structure at 2.05Â Ã
resolution. High structural homology around the active site allowed us to propose a model for substrate binding, explaining the exo-cleavage activity and specificity for non-methylated saturated galacturonate at the non-reducing end. Furthermore, the structure reveals unique features that contribute to the formation of stable tetramers in solution. Such an oligomerization has not been observed before for polygalacturonases.
Keywords
BESN,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acidexopolygalacturonaser.m.s.d.Yersinia enterocoliticaPolygalacturonaseDLSHEPESOligomerization4-(2-hydroxyethyl)-1-piperazineethanesulfonic acidX-ray crystallographyThermotoga maritimaThermostabilityCrystal structureroot mean square deviationMolecular weightDynamic Light Scatteringpolyethylene glycolPEGGlycosyl Hydrolase
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Authors
Tjaard Pijning, Gertie van Pouderoyen, Leon Kluskens, John van der Oost, Bauke W. Dijkstra,