(2S)-Flavan-4-ol

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: (2S)-Flavan-4-ol
• 英文别名: (2S)-2-phenyl-3,4-dihydro-2H-chromen-4-ol
• 化学式: C₁₅H₁₄O₂
• 分子量: 226.27
• InChiKey: YTMFRMLVZQOBDR-WUJWULDRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (2S)-Flavan-4-ol 、 NADP⁺ 生成 (2S)-flavanone 、 氢(+1)阳离子 、 NADPH(4-)
  参考文献：
  名称：

  Molecular cloning, substrate specificity of the functionally expressed dihydroflavonol 4-reductases from Malus domestica and Pyrus communis cultivars and the consequences for flavonoid metabolism

  摘要：

  Treatment with the dioxygenase inhibitor prohexadione-Ca leads to major changes in the flavonoid metabolism of apple (Malus domestica) and pear (Pyrus communis) leaves. Accumulation of unusual 3-deoxyflavonoids is observed, which have been linked to an enhanced resistance toward fire blight. The committed step in this pathway is the reduction of flavanones. Crude extracts from leaves are able to perform this reaction. There was previous evidence that DFR enzymes of certain plants possess additional flavanone 4-reductase (FNR) activity. Such an FNR activity of DFR enzymes is proved here by heterologous expression of the enzymes. The heterologously expressed DFR/FNR enzymes of Malus and Pyrus possess distinct differences in substrate specificities despite only minor differences of the amino acid sequences. Kinetic studies showed that dihydroflavonols generally are the preferred substrates.' However, with the observed substrate specificities the occurrence of 3-deoxyflavonoids in vivo after application of prohexadione-Ca can be explained. (C) 2003 Elsevier Science (USA). All rights reserved.

  DOI：

  10.1016/s0003-9861(03)00013-4

文献信息

• Probe compound for detecting and isolating enzymes and means and methods using the same
  申请人：Helmholtz-Zentrum für Infektionsforschung GmbH

  公开号：EP2230312A1

  公开（公告）日：2010-09-22

  The present invention relates to a probe compound that can comprise any substrate or metabolite of an enzymatic reaction in addition to an indicator component, such as, for example, a fluorescence dye, or the like. Moreover, the present invention relates to means for detecting enzymes in form of an array, which comprises any number of probe compounds of the invention which each comprise a different metabolite of interconnected metabolites representing the central pathways in all forms of life. Moreover, the present invention relates to a method for detecting enzymes involving the application of cell extracts or the like to the array of the invention which leads to reproducible enzymatic reactions with the substrates. These specific enzymatic reactions trigger the indicator (e.g. a fluorescence signal) and bind the enzymes to the respective cognate substrates. Moreover, the invention relates to means for isolating enzymes in form of nanoparticles coated with the probe compound of the invention. The immobilisation of the cognate substrates or metabolites on the surface of nanoparticles by means of the probe compounds allows capturing and isolating the respective enzyme, e.g. for subsequent sequencing.

  本发明涉及一种探针化合物，它可以包括酶反应的任何底物或代谢物，此外还包括指示成分，例如荧光染料或类似物。此外，本发明还涉及以阵列形式检测酶的方法，该阵列由任意数量的本发明探针化合物组成，每种探针化合物由代表所有生命形式中中心途径的相互关联的代谢物中的不同代谢物组成。此外，本发明还涉及一种检测酶的方法，该方法涉及将细胞提取物或类似物应用于本发明的阵列，从而导致与底物发生可重复的酶反应。这些特定的酶反应会触发指示剂（如荧光信号），并将酶与各自的同源底物结合。此外，本发明还涉及以涂覆有本发明探针化合物的纳米颗粒形式分离酶的方法。通过探针化合物将同源底物或代谢物固定在纳米颗粒表面，可以捕获和分离相应的酶，例如用于后续测序。
• PRODUCTION OF FLAVONOIDS BY RECOMBINANT MICROORGANISMS
  申请人：THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK

  公开号：EP1778850A2

  公开（公告）日：2007-05-02
• PROBE COMPOUND FOR DETECTING AND ISOLATING ENZYMES AND MEANS AND METHODS USING THE SAME
  申请人：Helmholtz-Zentrum für Infektionsforschung GmbH

  公开号：EP2408927A1

  公开（公告）日：2012-01-25
• [EN] PRODUCTION OF FLAVONOIDS BY RECOMBINANT MICROORGANISMS<br/>[FR] PRODUCTION DE FLAVONOIDES PAR MICRO-ORGANISMES RECOMBINES
  申请人：UNIV NEW YORK STATE RES FOUND

  公开号：WO2006010117A2

  公开（公告）日：2006-01-26

  Methods and compositions are provided for production of flavonoids in microbial hosts. The compositions comprises a set of genes which encode for enzymes involved in one or more steps in the biosynthetic pathway for the conversion of phenylpropanoids to various flavonoids. The method comprises the steps of introducing the set of genes into a heterologous host cell, allowing growth of the cells in a suitable medium such that the expression of the genes results in production of enzymes. When specific substrate(s) is/are provided to the transformed cell, the enzymes act on the substrate(s) to produce the desired flavonoids.
• [EN] PROBE COMPOUND FOR DETECTING AND ISOLATING ENZYMES AND MEANS AND METHODS USING THE SAME<br/>[FR] COMPOSÉ SONDE POUR DÉTECTER ET ISOLER DES ENZYMES ET MOYENS ET PROCÉDÉS POUR L'UTILISER
  申请人：HELMHOLTZ INFEKTIONSFORSCHUNG

  公开号：WO2010105851A1

  公开（公告）日：2010-09-23

  The present invention relates to a probe compound that can comprise any substrate or metabolite of an enzymatic reaction in addition to an indicator component, such as, for example, a fluorescence dye, or the like. Moreover, the present invention relates to means for detecting enzymes in form of an array, which comprises any number of probe compounds of the invention which each comprise a different metabolite of interconnected metabolites representing the central pathways in all forms of life. Moreover, the present invention relates to a method for detecting enzymes involving the application of cell extracts or the like to the array of the invention which leads to reproducible enzymatic reactions with the substrates. These specific enzymatic reactions trigger the indicator (e.g. a fluorescence signal) and bind the enzymes to the respective cognate substrates. Moreover, the invention relates to means for isolating enzymes in form of nanoparticles coated with the probe compound of the invention. The immobilisation of the cognate substrates or metabolites on the surface of nanoparticles by means of the probe compounds allows capturing and isolating the respective enzyme, e.g. for subsequent sequencing.