Cited by 140Bacterial Genetics and BiotechnologyMicrobial metabolism and enzyme functionMicrobial Metabolic Engineering and Bioproduction

Identification of a pathway for the utilization of the Amadori product fructoselysine in Escherichia coli

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Wiame, Elsa, Delpierre, Ghislain, Collard, François, Van Schaftingen, Emile·2002·Journal of Biological Chemistry

Abstract

Escherichia coli was found to grow on fructoselysine as an energetic substrate at a rate of about one-third of that observed with glucose. Extracts of cells grown on fructoselysine catalyzed in the presence of ATP the phosphorylation of fructoselysine and a delayed formation of glucose 6-phosphate from this substrate. Data base searches allowed us to identify an operon containing a putative kinase (YhfQ) belonging to the PfkB/ ribokinase family, a putative deglycase (YhfN), homologous to the isomerase domain of glucosamine-6-phosphate synthase, and a putative cationic amino acid transporter (YhfM). The proteins encoded by YhfQ and YhfN were overexpressed in E. coli, purified, and shown to catalyze the ATP-dependent phosphorylation of fructoselysine to a product identified as fructoselysine 6-phosphate by 31P NMR (YhfQ), and the reversible conversion of fructoselysine 6-phosphate and water to lysine and glucose 6-phosphate (YhfN). The K(m) of the kinase for fructoselysine amounted to 18 microm, and the K(m) of the deglycase for fructoselysine 6-phosphate, to 0.4 mm. A value of 0.15 m was found for the equilibrium constant of the deglycase reaction. The kinase and the deglycase were both induced when E. coli was grown on fructoselysine and then reached activities sufficient to account for the rate of fructoselysine utilization.

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  • In 34 healthy overweight adults aged 24-42 receiving energy-restricted diets for 6 months, more subjects in the low GL group showed a decline in serum CRP concentration than in the high GL group.

    “In one study, thirty-four healthy overweight adults aged 24 -42 years received energy-restricted diets with high or low GL for 6 months (674) ; more subjects in the low GL group showed a decline in serum CRP concentration than in the high GL group.”

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  1. Orchard, L. M., and Kornberg, H. L. (1990) Proc. R. Soc. Lond. B Biol. Sci. 242, 87-90

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Authors
Wiame, E., Delpierre, G., Collard, F., & Van Schaftingen, E.
Affiliations
de Duve Institute (BE)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2002-11
Volume
277
Issue
45
Pages
42523-42529
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2021458914
Cited by
140
References
30
Citations by year
2026: 1 · 2025: 5 · 2024: 8 · 2023: 7 · 2022: 11 · 2021: 5 · 2020: 8 · 2019: 8 · 2018: 4 · 2017: 6 · 2016: 7 · 2015: 6 · 2014: 6 · 2013: 5 · 2012: 10
FWCI
1.94
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Digital Access to Libraries (submittedVersion)
Funders
  • University of Miami
  • Ludwig Institute for Cancer Research
  • Universidade Nova de Lisboa
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial metabolism and enzyme function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
Keywords
fructoselysine, Amadori products, Escherichia coli, glucose-6-phosphate, operon, ATP-dependent phosphorylation, cationic amino acid transport, enzyme kinetics, gene induction
MeSH terms
Adenosine Triphosphate, Amidohydrolases, Amino Acid Sequence, Base Sequence, Chromatography, Ion Exchange, Escherichia coli, Glutamine-Fructose-6-Phosphate Transaminase (Isomerizing), Glycoside Hydrolases, Kinetics, Lysine, Molecular Sequence Data, Phosphorylation, Phosphotransferases, Polymerase Chain Reaction, Sequence Alignment, Sequence Homology, Amino Acid, DNA Primers, Escherichia coli Proteins

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