title: Extracellular beta-D-fructofuranosidase elaborated by Streptococcus salivarius strain 51: preparation, and mode of action on a levan and on homologues of inulobiose.
abstract: Streptococcus salivarius strain 51 produces an extracellular beta-D-fructofuranosidase when grown in a levan-containing medium. The enzyme hydrolyses levan, and inulo-biose, -tetraose, -pentaose, and -hexaose, but has negligible effects on inulin, inulotriose, and inuloheptaose. The branching in S. salivarius strain 51 levan is through a single (2 yields 1)-beta-D linkage.
mesh_terms: D002175:Candida / Q000201:enzymology; D005630:Fructans; D005632:Fructose / Q000378:metabolism; D006026:Glycoside Hydrolases / Q000378:metabolism*; D007444:Inulin / Q000031:analogs & derivatives; D007700:Kinetics; D009844:Oligosaccharides; D013302:Streptomyces / Q000201:enzymology*; D013379:Substrate Specificity; D013393:Sucrase / Q000378:metabolism*; D043324:beta-Fructofuranosidase
chemical_list: D005630:Fructans; D009844:Oligosaccharides; D005632:Fructose; D007444:Inulin; D006026:Glycoside Hydrolases; D043324:beta-Fructofuranosidase; D013393:Sucrase