5xha

Aspergillus kawachii beta-fructofuranosidase complexed with fructose

spinqualitylabelsall models 5xha, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5xha is a 1 chain structure with sequence from Aspergillus luchuensis IFO 4308. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.1Å Ligands: FRU, NA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function G7XM46_ASPKW Publication Abstract from PubMed beta-Fructofuranosidases belonging to glycoside hydrolase family (GH) 32 are enzymes that hydrolyze sucrose. Some GH32 enzymes also catalyze transfructosylation to produce fructooligosaccharides. We found that Aspergillus kawachii IFO 4308 beta-fructofuranosidase (AkFFase) produces fructooligosaccharides, mainly 1-kestose, from sucrose. We determined the crystal structure of AkFFase. AkFFase is composed of an N-terminal small component, a beta-propeller catalytic domain, an alpha-helical linker, and a C-terminal beta-sandwich, similar to other GH32 enzymes. AkFFase forms a dimer, and the dimerization pattern is different from those of other oligomeric GH32 enzymes. The complex structure of AkFFase with fructose unexpectedly showed that fructose binds both subsites -1 and +1, despite the fact that the catalytic residues were not mutated. Fructose at subsite +1 interacts with Ile146 and Glu296 of AkFFase via direct hydrogen bonds. Crystal structure of a beta-fructofuranosidase with high transfructosylation activity from Aspergillus kawachii.,Nagaya M, Kimura M, Gozu Y, Sato S, Hirano K, Tochio T, Nishikawa A, Tonozuka T Biosci Biotechnol Biochem. 2017 Jul 17:1-10. doi: 10.1080/09168451.2017.1353405. PMID:28715279 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Invertase

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