title: Cucumis sativus secretes 4'-ketoriboflavin under iron-deficient conditions.
abstract: A new compound in cucumber, Cucumis sativus, nutrient solution that appears under iron-deficient conditions, but not under ordinary culture conditions, has been revealed by HPLC analysis. The chemical structure of this compound was identified using LC-MS and NMR techniques as that of 4'-ketoriboflavin. This is the first report to show that 4'-ketoriboflavin can be found in metabolites from organisms.
authors.affiliation: a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Junichi
authors.initials: J
authors.lastname: Satoh
authors.affiliation: b RIKEN Center for Sustainable Resource Science , Wako , Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Koshino
authors.affiliation: a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Kouta
authors.initials: K
authors.lastname: Sekino
authors.affiliation: a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Ito
authors.affiliation: c Department of Fermentation Science , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Katsuta
authors.affiliation: d Education Course, Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Kouji
authors.initials: K
authors.lastname: Takeda
authors.affiliation: e Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo , Japan.
authors.forename: Etsuro
authors.initials: E
authors.lastname: Yoshimura
authors.affiliation: f Department of Bioresource Science, Junior College , Nihon University , Fujisawa , Japan.
authors.forename: Fumie
authors.initials: F
authors.lastname: Shinmachi
authors.affiliation: a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Kawasaki
authors.affiliation: a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Youichi
authors.initials: Y
authors.lastname: Niimura
authors.affiliation: c Department of Fermentation Science , Tokyo University of Agriculture , Tokyo , Japan.
authors.forename: Tomoo
authors.initials: T
authors.lastname: Nukada
mesh_terms: D001692:Biological Transport; D018553:Cucumis sativus / Q000187:drug effects / Q000378:metabolism*; D003470:Culture Media / Q000737:chemistry; D018527:Hydroponics; D007501:Iron / Q000494:pharmacology; D000090463:Iron Deficiencies; D009682:Magnetic Resonance Spectroscopy; D018517:Plant Roots / Q000187:drug effects / Q000378:metabolism*; D012256:Riboflavin / Q000031:analogs & derivatives / Q000096:biosynthesis / Q000378:metabolism*; D013312:Stress, Physiological
chemical_list: D003470:Culture Media; D007501:Iron; D012256:Riboflavin
keywords: 4′-ketoriboflavin; Cucumis sativus; iron deficiency