2-hydroxy-2,4E-heptadiene-1,7-dioate

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 2-hydroxy-2,4E-heptadiene-1,7-dioate
• 英文别名: (2Z,4E)-2-hydroxyhepta-2,4-dienedioic acid
• 化学式: C₇H₈O₅
• 分子量: 172.138
• InChiKey: ZBCBETMBSDTINL-WFTYEQLWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  94.8
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2-hydroxy-2,4E-heptadiene-1,7-dioate 在 NaH₂PO₄ buffer 作用下， 生成 (Z)-6-Oxo-hept-3-enedioic acid
  参考文献：
  名称：

  The Contribution of the Substrate's Carboxylate Group to the Mechanism of 4-Oxalocrotonate Tautomerase

  摘要：

  4-Oxalocrotonate tautomerase (4-OT) converts 2-oxo-4E-hexenedioate (1) to 2-oxo-3E-hexenedioate (3) through the dienol intermediate, 2-hydroxy-2,4-hexadiene-1,6-dioate (2). Previous studies established that the isomerization of 1 to 3 is primarily a suprafacial process. It was also suggested that the 6-carboxylate group of the substrate maintains the regio- and stereochemical fidelity of the reaction by anchoring the substrate at the active site. A subsequent study suggested an additional role for the 6-carboxylate group in the mechanism: the enzyme may utilize the binding energy of the carboxylate group to facilitate catalysis. In order to explore the role of the carboxylate group in the mechanism further, the nonenzymatic rate constants for mono- and dicarboxylated substrates were measured and compared to the rates obtained for the corresponding enzymatic reactions. The results show that the missing carboxylate group has a profound effect on enzymatic catalysis as evidenced by the significant decreases (a 10(4)- and a 10(5)-fold reduction) in the values of k(cat)/K-m observed for the two monocarboxylated substrates. A comparison of the nonenzymatic rate constants indicates that the reduced k(cat)/K-m values cannot be explained on the basis of the chemical reactivities. The stereochemical course of the 4-OT-catalyzed reaction was also determined using 2-hydroxy-2,4Z-heptadiene-1,7-dioate. The stereochemical analysis reveals that the presence of the carboxylate group improves the stereoselectivity of the enzyme-catalyzed ketonization of 2-hydroxy-2,4Z-heptadiene-1,7-dioate to 2-oxo-[3-H-2]-4Z-heptene-1,7-dioate in (H2O)-H-2-a result that is consistent with its previously assigned role. These findings provide further evidence that the substrate's carboxylate group contributes to the mechanism of the enzyme in two ways: it anchors the substrate at the active site and it facilitates catalysis by destabilizing the substrate or by stabilizing the transition state. (C) 1998 Academic Press.

  DOI：

  10.1006/bioo.1998.1095

文献信息

• Human peptidyl-prolyl isomerases
  申请人：Incyte Genomics, Inc.

  公开号：US20030087390A1

  公开（公告）日：2003-05-08

  The invention provides human peptidyl-prolyl isomerases (HPPIP) and polynucleotides which identify and encode HPPIP. The invention also provides expression vectors, host cells, antibodies, agonists, and antagonists. The invention also provides methods for diagnosing, treating or preventing disorders associated with expression of HPPIP.

  本发明提供了人肽基脯氨酰异构酶（HPPIP）以及识别和编码 HPPIP 的多核苷酸。本发明还提供了表达载体、宿主细胞、抗体、激动剂和拮抗剂。本发明还提供了诊断、治疗或预防与 HPPIP 表达有关的疾病的方法。
• Mutated gene from corynebacterium glutamicum
  申请人：Zelder Oskar

  公开号：US20050003494A1

  公开（公告）日：2005-01-06

  The invention relates to a novel nucleic acid molecule, to the use thereof for constructing genetically improved microorganisms and to methods for preparing fine chemicals, in particular amino acids, with the aid of said genetically improved microorganisms.

  本发明涉及一种新型核酸分子，利用这种核酸分子构建基因改良微生物，以及借助上述基因改良微生物制备精细化学品，特别是氨基酸的方法。
• Corynebacterium glutamicum genes encoding proteins involved in homeostasis and adaptation
  申请人：Pompejus Markus

  公开号：US20050191732A1

  公开（公告）日：2005-09-01

  Isolated nucleic acid molecules, designated HA nucleic acid molecules, which encode novel HA proteins from Corynebacterium glutamicum are described. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing HA nucleic acid molecules, and host cells into which the expression vectors have been introduced. The invention still further provides isolated HA proteins, mutated HA proteins, fusion proteins, antigenic peptides and methods for the improvement of production of a desired compound from C. glutamicum based on genetic engineering of HA genes in this organism.

  从谷氨酸棒状杆菌中分离出编码新型 HA 蛋白的核酸分子，命名为 HA 核酸分子。 谷氨酸棒杆菌 描述。本发明还提供了反义核酸分子、含有 HA 核酸分子的重组表达载体以及导入表达载体的宿主细胞。本发明还进一步提供了分离的 HA 蛋白、变异的 HA 蛋白、融合蛋白、抗原肽以及改进谷氨酸酵母菌生产所需化合物的方法。 谷氨酸棒状杆菌 中的 HA 基因的遗传工程。
• Novel polynucleotides
  申请人：Nakagawa Satoshi

  公开号：US20060228712A1

  公开（公告）日：2006-10-12

  Novel polynucleotides derived from microorganisms belonging to coryneform bacteria and fragments thereof, polypeptides encoded by the polynucleotides and fragments thereof, polynucleotide arrays comprising the polynucleotides and fragments thereof, recording media in which the nucleotide sequences of the polynucleotide and fragments thereof have been recorded which are readable in a computer, and use of them.

  从属于冠状病毒细菌的微生物中提取的新型多核苷酸及其片段、由多核苷酸及其片段编码的多肽、包含多核苷酸及其片段的多核苷酸阵列、记录了多核苷酸及其片段的核苷酸序列且可在计算机中读取的记录介质，以及它们的用途。
• HUMAN PROSTATE CANCER ASSOCIATED GENE SEQUENCES AND POLYPEPTIDES
  申请人：Human Genome Sciences, Inc.

  公开号：EP1165589A1

  公开（公告）日：2002-01-02