3-dehydro-L-gulonate | 88546-95-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-dehydro-L-gulonate
• 英文别名: (2S,4R,5S)-2,4,5,6-tetrahydroxy-3-oxohexanoic acid
• CAS: 88546-95-6
• 化学式: C₆H₁₀O₇
• 分子量: 194.141
• InChiKey: WTAHRPBPWHCMHW-LWKDLAHASA-N

物化性质

• 沸点：
  650.9±55.0 °C(Predicted)
• 密度：
  1.757±0.06 g/cm3(Predicted)
• 物理描述：
  Solid

计算性质

• 辛醇/水分配系数(LogP)：
  -2.8
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  135
• 氢给体数：
  5
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  L-古洛糖酸 在 MASPAAGDVLIVGSGLVGRSWAMLFASGGFRVKLYDIEPRQITGALENIRKEMKSLQQSGSLKGSLSAEEQLSLISSCTNLAEAVEGVVHIQECVPENLDLKRKIFAQLDSIVDDRVVLSSSSSCLLPKSKLFTGLAHVKQCIVAHPVNPPYYIPLVELVPHPETSPATVDRTHALMRKIGQSPVRVLKEIDGFVLNRLQYAIISEAWRLVEEGIVSPSDLDLVMSDGLGMRYAFIGPLETMHLNAEGMLSYCDRYSEGMKRVLKSFGSIPEFSGAT 、 nicotinamide adenine dinucleotide 作用下， 生成 3-dehydro-L-gulonate
  参考文献：
  名称：

  Dimeric Crystal Structure of Rabbit l-Gulonate 3-Dehydrogenase/λ-Crystallin: Insights into the Catalytic Mechanism

  摘要：

  L-Gulonate 3-dehydrogenase (GDH) is a bifunctional dimeric protein that functions not only as an NAD(+)-dependent enzyme in the uronate cycle but also as a taxon-specific lambda-crystallin in rabbit lens. Here we report the first crystal structure of GDH in both apo form and NADH-bound holo form. The GDH protomer consists of two structural domains: the N-terminal domain with a Rossmann fold and the C-terminal domain with a novel helical fold. In the N-terminal domain of the NADH-bound structure, we identified 11 coenzyme-binding residues and found 2 distinct side-chain conformers of Ser124, which is a putative coenzyme/substrate-binding residue. A structural comparison between apo form and holo form and a mutagenesis study with E97Q mutant suggest an induced-fit mechanism upon coenzyme binding; coenzyme binding induces a conformational change in the coenzyme-binding residues Glu97 and Ser124 to switch their activation state from resting to active, which is required for the subsequent substrate recruitment. Subunit dimerization is mediated by numerous intersubunit interactions, including 22 hydrogen bonds and 104 residue pairs of van der Waals interactions, of which those between two cognate C-terminal domains are predominant. From a structure/sequence comparison within GDH homologues, a much greater degree of interprotomer interactions (both polar and hydrophobic) in the rabbit GDH would contribute to its higher thermostability, which may be relevant to the other function of this enzyme as lambda-crystallin, a constitutive structural protein in rabbit lens. The present crystal structures and amino acid mutagenesis studies assigned the role of active-site residues: catalytic base for His145 and substrate binding for Ser124, Cys125, Asn196, and Arg231. Notably, Arg231 participates in substrate binding from the other subunit of the GDH dimer, indicating the functional significance of the dimeric state. Proper orientation of the substrate-binding residues for catalysis is likely to be maintained by an interprotomer hydrogen-bonding network of residues Asn196, Gln199, and Arg231, suggesting a network-based substrate recognition of GDH. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.jmb.2010.06.069

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。
• PREDICTING AND TREATING DIABETIC COMPLICATIONS
  申请人：Joslin Diabetes Center, Inc.

  公开号：EP2877214A1

  公开（公告）日：2015-06-03
• PREDICTING DIABETIC COMPLICATIONS
  申请人：Joslin Diabetes Center, Inc.

  公开号：EP2877214B1

  公开（公告）日：2019-04-24
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  申请人：INVISTA NORTH AMERICA S.A.R.L.

  公开号：US20190338375A1

  公开（公告）日：2019-11-07

  Methods for increasing carbon-based chemical product yield in an organism by perturbing redox balance in an organism as well as nonnaturally occurring organisms with perturbed redox balance and methods for their use in producing carbon-based chemical products are provided.
• MASSIVELY PARALLEL ON-CHIP CONSTRUCTION OF SYNTHETIC MICROBIAL COMMUNITIES
  申请人：MASSACHUSETTS INSTITUTE OF TECHNOLOGY

  公开号：US20220228190A1

  公开（公告）日：2022-07-21

  The present disclosure relates to compositions and methods for combinatorial assessment of nanoscale droplets, as specifically exemplified by massively parallel assessment of spatially-directed (while agnostic as to precise droplet content) combinations of droplets harboring distinct and independently identifiable microbial types and/or chemical compounds or mixtures. More particularly, the disclosure relates to a platform and methodologies for identifying advantageous (including synergistic, additive, etc.) microbial interactions and/or chemical compound or mixture interactions with microbes in a manner that allows for binary, trinary, etc. combinatorial assessments to be performed across a range of many discrete input types of microbes (e.g., 6-16 or more discrete input microbial types), to an extent capable of approaching comprehensive sampling and measurement of microbial community combinations from a selected panel of microbial inputs, optionally also in the presence of chemical compounds or mixtures (e.g., test compounds or mixtures for antimicrobial effect).