2xqx | pdb_00002xqx

Structure of the family 32 carbohydrate-binding module from Streptococcus pneumoniae EndoD

spinqualitylabelsall models 2xqx, resolution 2.01Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2xqx is a 2 chain structure with sequence from Strpn. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ACT, CA NonStd Res: MSE Related: 2w92, 2w91 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed EndoD is an architecturally complex endo-beta-1,4-N-acetylglucosamidase from Streptococcus pneumoniae that cleaves the chitobiose core of N-linked glycans and contributes to pneumococcal virulence. Although the glycoside hydrolase family 85 catalytic module has been structurally and functionally characterized, nothing is known about the ancillary modules and how they contribute to the overall function of the enzyme. Presented here is the 2.0 A resolution structure of a family 32 carbohydrate-binding module of EndoD, SpCBM32, solved by single-wavelength anomalous dispersion. The putative binding site of this protein is a charge-neutral relatively flat region on the protein surface that contains one prominently exposed tryptophan residue that extends into the solvent. These topographical features are discussed in the biological context of EndoD activity and a hypothesis is made about the complex structure of its potential carbohydrate ligand. Structural analysis of a putative family 32 carbohydrate-binding module from the Streptococcus pneumoniae enzyme EndoD.,Abbott DW, Boraston A Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Apr 1;67(Pt 4):429-33., Epub 2011 Mar 24. PMID:21505233 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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