The levansucrase and inulosucrase enzymes of Lactobacillus reuteri 121 catalyse processive and non-processive transglycosylation reactions

LK Ozimek, S Kralj, MJEC Van der Maarel… - …, 2006 - microbiologyresearch.org
Bacterial fructosyltransferase (FTF) enzymes synthesize fructan polymers from sucrose.
FTFs catalyse two different reactions, depending on the nature of the acceptor, resulting in:(i) …

Biochemical and molecular characterization of a levansucrase from Lactobacillus reuteri

S Van Hijum, E Szalowska… - …, 2004 - microbiologyresearch.org
Lactobacillus reuteri strain 121 employs a fructosyltransferase (FTF) to synthesize a fructose
polymer [a fructan of the levan type, with β (2→ 6) linkages] from sucrose or raffinose …

Single amino acid residue changes in subsite − 1 of inulosucrase from Lactobacillus reuteri 121 strongly influence the size of products synthesized

LK Ozimek, S Kralj, T Kaper… - The FEBS …, 2006 - Wiley Online Library
Bacterial fructansucrase enzymes belong to glycoside hydrolase family 68 and catalyze
transglycosylation reactions with sucrose, resulting in the synthesis of …

Crystal structure of inulosucrase from Lactobacillus: insights into the substrate specificity and product specificity of GH68 fructansucrases

T Pijning, MA Anwar, M Böger… - Journal of molecular …, 2011 - Elsevier
Fructansucrases (FSs) catalyze a transfructosylation reaction with sucrose as substrate to
produce fructo-oligosaccharides and fructan polymers that contain either β-2, 1 glycosidic …

Inulin and levan synthesis by probiotic Lactobacillus gasseri strains: characterization of three novel fructansucrase enzymes and their fructan products

MA Anwar, S Kralj, AV Pique, H Leemhuis… - …, 2010 - microbiologyresearch.org
Fructansucrase enzymes polymerize the fructose moiety of sucrose into levan or inulin
fructans, with β (2-6) and β (2-1) linkages, respectively. Here, we report an evaluation of …

Synthesis of sucrose analogues and the mechanism of action of Bacillus subtilis fructosyltransferase (levansucrase)

J Seibel, R Moraru, S Götze, K Buchholz… - Carbohydrate …, 2006 - Elsevier
In the present study, we have coupled detailed acceptor and donor substrate studies of the
fructosyltransferase (FTF, levansucrase)(EC 2.4. 1.162) from Bacillus subtilis NCIMB 11871 …

Site‐directed mutagenesis study of the three catalytic residues of the fructosyltransferases of Lactobacillus reuteri 121

LK Ozimek, S Van Hijum, GA Van Koningsveld… - FEBS …, 2004 - Wiley Online Library
Bacterial fructosyltransferases (FTFs) are retaining‐type glycosidases that belong to family
68 of glycoside hydrolases. Recently, the high‐resolution 3D structure of the Bacillus subtilis …

Polymerase and hydrolase activities of Bacillus subtilis levansucrase can be separately modulated by site-directed mutagenesis

R Chambert, MF Petit-Glatron - Biochemical Journal, 1991 - portlandpress.com
The levansucrase (sucrose: 2, 6-beta-D-fructan 6-beta-D-fructosyltransferase, EC 2.4. 1.10)
structural gene from a Bacillus subtilis mutant strain displaying a low polymerase activity …

Synthesis of novel disaccharides by a newly isolated fructosyl transferase from Bacillus subtilis

PSJ Cheetham, AJ Hacking, M Vlitos - Enzyme and microbial technology, 1989 - Elsevier
A new fructosyl transferase (EC 2.4. 1.161), with an exceptionally high propensity to form a
wide range of α 1–2 linked disaccharides, but which does not form appreciable levan …

Purification of a novel fructosyltransferase from Lactobacillus reuteri strain 121 and characterization of the levan produced

SAFT van Hijum, K Bonting… - FEMS microbiology …, 2001 - academic.oup.com
Fructosyltransferase (FTF) enzymes have been characterized from various Gram-positive
bacteria, but not from Lactobacillus sp. In a screening of 182 lactobacilli for polysaccharide …