6nps

Crystal structure of GH115 enzyme AxyAgu115A from Amphibacillus xylanus

spinqualitylabelsall models 6nps, resolution 1.99Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6nps is a 2 chain structure with sequence from Amphibacillus xylanus NBRC 15112. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.99Å Ligands: CL, GOL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function K0J4X5_AMPXN Publication Abstract from PubMed The coordinated action of carbohydrate-active enzymes has mainly been evaluated for the purpose of complete saccharification of plant biomass (lignocellulose) to sugars. By contrast, the coordinated action of accessory hemicellulases on xylan debranching and recovery is less well characterized. Here, the activity of two family GH115 alpha-glucuronidases (SdeAgu115A from Saccharophagus degradans, and AxyAgu115A from Amphibacillus xylanus) on spruce arabinoglucuronoxylan (AGX) was evaluated in combination with an alpha-arabinofuranosidase from families GH51 (AniAbf51A, aka E-AFASE from Aspergillus niger) and GH62 (SthAbf62A from Streptomyces thermoviolaceus). The alpha-arabinofuranosidases boosted (methyl)-glucuronic acid release by SdeAgu115A by approximately 50 % and 30 %, respectively. The impact of the alpha-arabinofuranosidases on AxyAgu115A activity was comparatively low, motivating its structural characterization. The crystal structure of AxyAgu115A revealed increased length and flexibility of the active site loop compared to SdeAgu115A. This structural difference could explain the ability of AxyAgu115A to accommodate more highly substituted arabinoglucuronoxylan, and inform enzyme selections for improved AGX recovery and use. Structural characterization of the family GH115 alpha-glucuronidase from Amphibacillus xylanus yields insight into its coordinated action with alpha-arabinofuranosidases.,Yan R, Wang W, Vuong TV, Xiu Y, Skarina T, Di Leo R, Gatenholm P, Toriz G, Tenkanen M, Stogios PJ, Master ER N Biotechnol. 2021 Jan 21;62:49-56. doi: 10.1016/j.nbt.2021.01.005. PMID:33486119 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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