Reduction in Desorption Mass Spectrometry : Multiple Protonation on Flavins without Charge Increment
スポンサーリンク
概要
- 論文の詳細を見る
Three flavin-containing compounds, namely, riboflavin, riboflavin 5′-phosphate (flavin mononucleotide, FMN) and flavin-adenine dinucleotide (FAD, Scheme 1), were studied using matrix-assisted laser desorption ionization (MALDI), fast atom bombardment (FAB) and electrospray ionization (ESI) mass spectrometry. It was found that the isoalloxazine ring (flavin) was reduced in the positive-ion MALDI and FAB ionization processes producing unusual ions [M+2]+· and [M+3]+ in addition to the anticipated [M+1]+, whereas ESI generated only [M+H]+ as the molecular-related ion. The reduction mechanism is hypothesized as the protonation from the matrix with a concomitant electron transfer,*1 rather than the transfer of hydrogen atom(s), H··ESI, in which matrix is not used, did not produce [M+2]+· nor [M+3]+ more than the natural isotope abundance of 13C in the sample molecules. The reduction site expands to N(1)=C(10a)-C(4a)=N(5), a1,4-diaza-1,3-butadiene system, in the isoalloxazine ring, resembling the behavior of prosthetic groups of aerobic dehydrogenases.
- 日本質量分析学会の論文
- 2002-04-01
著者
-
Maki Shojiro
Department Of Applied Physics And Chemistry The University Of Electrocommunications
-
平野 誉
電気通信大学 量子・物質工学科
-
丹羽 治樹
電気通信大学
-
ITHO Yoshiyuki
Dept. of Applied Physics and Chemistry, The Univ. Electro-Communications
-
OHASHI Yoko
Center for Instrumental Analysis, The Univ. of Electro-Communications
-
SHIBUE Toshimichi
Materials Characterization Central Laboratory, Waseda Univ.
-
HAYASHI Akio
Dept. of Applied Physics and Chemistry, The Univ. Electro-Communications
-
MAKI Shojiro
Dept. of Applied Physics and Chemistry, The Univ. Electro-Communications
-
HIRANO Takashi
Dept. of Applied Physics and Chemistry, The Univ. Electro-Communications
-
NIWA Haruki
Dept. of Applied Physics and Chemistry, The Univ. Electro-Communications
-
Ohashi Yoko
Center For Instrumental Analysis The Univ. Of Electro-communications
-
Itho Yoshiyuki
Dept. Of Applied Physics And Chemistry The Univ. Electro-communications
-
Shibue Toshimichi
Materials Characterization Central Laboratory Waseda Univ.
-
Ohmiya Y
Center For Instrumental Analysis The Univ. Of Electro-communications
-
Hayashi Akio
Dept. Of Applied Physics And Chemistry The Univ. Electro-communications
-
Hirano Takashi
Department Of Surgery Tokyo Metropolitan Health And Medical Treatment Corporation Ebara Hospital
-
Itoh Yoshiyuki
Dept. of Applied Physics and Chemistry, The Univ. Electro-Communications
関連論文
- ウミホタルとオワンクラゲの生物発光 : 反応機構研究の新展開
- 15 オワンクラゲの緑色蛍光タンパク質クロモフォアの構造決定(口頭発表の部)
- A. オワンクラゲの生物発光および関連化学発光の機構解明
- A. オワンクラゲの生物発光および関連化学発光の機構解明
- A. オワンクラゲの生物発光および関連化学発光の機構解明
- オワンクラゲの増感生物発光機構
- 93(P-2) ラチア生物発光の分子基盤(ポスター発表の部)
- Synthesis, Chemi-and Bioluminescence Properties, and Photolysis of a Coelenterazine Analogue Having a Photoreactive Azido Group
- 3-Benzyl-5-(4-hydroxyphenyl)-2-[4-(1-azi-2,2,2-trifluoroethyl)phenylacetamido]pyrazine, a Photoreactive Analogue of Coelenteramid. Synthesis and Photolysis
- FAB CID-MS/MS of In-Source Fragment Ions as a Means to Differentiate Linkage Isomers of Branched Oligosaccharides : Le^a and Le^x Type Glycoconjugates
- JTII-29 Proteomic analysis of stage I primary lung adenocarcinoma aimed at individualization of postoperative therapy
- Fundamental Studies on the Structures and Spectroscopic Properties of Imidazo[1, 2-α]pyrazin-3(7H)-one Derivatives
- P-71 ホタル発光系を利用したL-ルシフェリンからホタルD-ルシフェリンの生成(ポスター発表の部)
- Characterization of [1-^C]-Specifically Labeled Amino Acids Using ESIMS/MS in the Selected Reaction Monitoring Mode
- Substituent Effects on the Solvatochromism of 2-Phenylimidazopyrazinones : Effective Control of the Color Variation Range and Sensitivity toward an Indication of the Proton-donor Ability of Solvents by an Electron-withdrawing Group Substitution
- Reduction in Desorption Mass Spectrometry : Multiple Protonation on Flavins without Charge Increment
- Preparation of Deoxygenated Derivatives of Neoanisatin, a Neurotoxic Sesquiterpenoid Having a β-Lactone
- 生物はなぜ光るのか--生物発光とその応用
- 86(P-43) ギンコライドBの全合成研究(ポスター発表の部)
- Differentiation between N-Acetylchondrosine and N-Acetyldermosine by Matrix-Assisted Laser Desorption Ionization Time of Flight Post Source Decay Mass Spectrometry
- 有機合成における電極反応の応局
- FAB-CID Mass Spectrometry of Imidazolone Derivatives Related to the Chromophore of Aequorea Green Fluorescent Protein
- Substituent Effects on the Chemiluminescent Properties of Coelenterazine Analogues
- Human Tissue Distribution of TA02, Which is Homologous with a New Type of Aspartic Proteinase, Napsin A
- A. 生物発光および関連化学発光の機構解明
- 生物発光の化学とそのイメージングへの応用
- 発光反応 (特集・光る生物--ホタルを中心に)
- MAGNETIC TESTS AND FERROMAGNETIC RESONANCE ON DAPHNIA RESTING EGGS(Cell Biology and Morphology,Abstracts of papers presented at the 76^ Annual Meeting of the Zoological Society of Japan)
- ANALYSIS OF DAPHNIA RESTING EGGS BY ELECTRON SPIN RESONANCE (ESR) SPECTROSCOPY(Biochemistry,Abstracts of papers presented at the 75^ Annual Meeting of the Zoological Society of Japan)
- Crystalline Calcium Phosphate and Magnetic Mineral Content of Daphnia Resting Eggs(Biochemistry)
- Structural Characterization of Picket-fence Porphyrinatoiron with ω-Hydroxy-2, 2-dimethylicosanoyl Side-chains vs. ω-Cholinephosphoryl-2, 2-dimethylicosanoyl Side-chains by FAB High-energy-CID MS/MS
- Comparison of Electron Ionization and Fast Atom Bombardment Ionization for CID-MS/MS Studies of "Picket-Fence" Porphyrin
- Analysis of Functional Groups of Porphyrins by Collision-Induced Dissociation Mass Spectrometry/Mass Spectrometry
- Chemical Analysis of Surface Hydrocarbons in Fireflies by Direct Contact Extraction and Gas Chromatography-Mass Spectrometry
- Analysis of Self-Assembled Monolayers by Thermal Desorption Mass Spectrometry : Neighborhood Interaction and Hydrogen/Deuterium Exchange
- Porphyrin Capped with Calix[4]arene Derivative via Hydrogen Bonds
- A Duplex of Tetra(2-pyridyl)porhyrin and Tetrahydroxylcalix[4]arene
- Stereospecific Synthesis of Tricyclo[5.3.10^] undec-9-ene-8, 11-diones by Means of Electrochemical Methodology and Their Base-Catalyzed Fragmentation Reaction
- Electrochemical Synthesis of a Tricyclo[5.4.0.0^]undec-9-en-8,11-dione and Its Conversion to a Triqinane-type Compound
- 生物発光分子系を基盤とする機能性色素化学 : イミダゾピラジノンπ電子系の基礎化学と応用
- Early-stage lung cancer : diagnosis and treatment
- Treatment of Peripheral Early Stage Lung Cancer
- Bioluminescence Activity of Coelenterazine Analogues after Incorporation Recombinant Apoaequorin
- P-130 Chemistry on Oxygenation Site in Firefly Luciferase
- Estimation for diameter of superparamagnetic particles in Daphnia resting eggs
- Influence of Electron-Donating and Electron-Withdrawing Substituents on the Chemiluminescence Behavior of Coelenterazine Analogs
- Totally ab Initio Prediction of the Structures of CO_2 Molecular Crystal
- Thymolipoma Combined with Hyperthyroidism Discovered by Neurological Symptoms