D-酪氨酸,D-酪氨酰- | 130755-05-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: D-酪氨酸,D-酪氨酰-
• 英文名称: (D-Tyr)-(D-Tyr)
• 英文别名: (2R)-2-[[(2R)-2-amino-3-(4-hydroxyphenyl)propanoyl]amino]-3-(4-hydroxyphenyl)propanoic acid
• CAS: 130755-05-4
• 化学式: C₁₈H₂₀N₂O₅
• 分子量: 344.367
• InChiKey: JAQGKXUEKGKTKX-HZPDHXFCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.9
• 重原子数：
  25
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  133
• 氢给体数：
  5
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  D-酪氨酸,D-酪氨酰- 以 正丁醇 为溶剂， 反应 2.0h， 生成 cyclo-L-Tyr-L-Tyr
  参考文献：
  名称：

  Substrate and Reaction Specificity of Mycobacterium tuberculosis Cytochrome P450 CYP121

  摘要：

  Cytochrome P450 CYP121 is essential for the viability of Mycobacterium tuberculosis. Studies in vitro show that it can use the cyclodipeptide cyclo(L-Tyr-L-Tyr) (cYY) as a substrate. We report an investigation of the substrate and reaction specificities of CYP121 involving analysis of the interaction between CYP121 and 14cYY analogues with various modifications of the side chains or the diketopiperazine (DKP) ring. Spectral titration experiments show that CYP121 significantly bound only cyclodipeptides with a conserved DKP ring carrying two aryl side chains in L-configuration. CYP121 did not efficiently or selectively transform any of the cYY analogues tested, indicating a high specificity for cYY. The molecular determinants of this specificity were inferred from both crystal structures of CYP121-analog complexes solved at high resolution and solution NMR spectroscopy of the analogues. Bound cYY or its analogues all displayed a similar set of contacts with CYP121 residues Asn(85), Phe(168), and Trp(182). The propensity of the cYY tyrosyl to point toward Arg(386) was dependent on the presence of the DKP ring that limits the conformational freedom of the ligand. The correct positioning of the hydroxyl of this tyrosyl was essential for conversion of cYY. Thus, the specificity of CYP121 results from both a restricted binding specificity and a fine-tuned P450 substrate relationship. These results document the catalytic mechanism of CYP121 and improve our understanding of its function in vivo. This work contributes to progress toward the design of inhibitors of this essential protein of M. tuberculosis that could be used for antituberculosis therapy.

  DOI：

  10.1074/jbc.m112.443853
• 作为产物：
  描述：

  在 甲酸 、 水 、 三氟乙酸 作用下， 反应 2.0h， 生成 D-酪氨酸,D-酪氨酰-
  参考文献：
  名称：

  Substrate and Reaction Specificity of Mycobacterium tuberculosis Cytochrome P450 CYP121

  摘要：

  Cytochrome P450 CYP121 is essential for the viability of Mycobacterium tuberculosis. Studies in vitro show that it can use the cyclodipeptide cyclo(L-Tyr-L-Tyr) (cYY) as a substrate. We report an investigation of the substrate and reaction specificities of CYP121 involving analysis of the interaction between CYP121 and 14cYY analogues with various modifications of the side chains or the diketopiperazine (DKP) ring. Spectral titration experiments show that CYP121 significantly bound only cyclodipeptides with a conserved DKP ring carrying two aryl side chains in L-configuration. CYP121 did not efficiently or selectively transform any of the cYY analogues tested, indicating a high specificity for cYY. The molecular determinants of this specificity were inferred from both crystal structures of CYP121-analog complexes solved at high resolution and solution NMR spectroscopy of the analogues. Bound cYY or its analogues all displayed a similar set of contacts with CYP121 residues Asn(85), Phe(168), and Trp(182). The propensity of the cYY tyrosyl to point toward Arg(386) was dependent on the presence of the DKP ring that limits the conformational freedom of the ligand. The correct positioning of the hydroxyl of this tyrosyl was essential for conversion of cYY. Thus, the specificity of CYP121 results from both a restricted binding specificity and a fine-tuned P450 substrate relationship. These results document the catalytic mechanism of CYP121 and improve our understanding of its function in vivo. This work contributes to progress toward the design of inhibitors of this essential protein of M. tuberculosis that could be used for antituberculosis therapy.

  DOI：

  10.1074/jbc.m112.443853

文献信息

• Chiral adaptive recognition with sequence specificity of aromatic dipeptides in aqueous solution by an achiral cage
  作者：Lin Cheng、Ping Tian、Honghong Duan、Qingfang Li、Xiaowen Song、Anyang Li、Liping Cao

  DOI：10.1039/d2sc05854e

  日期：——

  dipeptides to form 1 : 2 host–guest complexes with high binding affinity (>1010 M−2), especially up to ∼1014 M−2 for TrpTrp. Given the dynamic rotational conformation of TPE units, achiral 1 can exhibit chiral adaptive responses with mirror-symmetrical circular dichroism (CD) and circularly polarized luminescence (CPL) spectra to enantiomeric dipeptides via supramolecular chirality transfer in the host–guest

  通过合成化合物或系统对肽和蛋白质进行序列特异性识别仍然是生物相容性介质中的一个巨大挑战。在这里，我们使用基于四苯乙烯的非手性八阳离子笼 ( 1 ) 作为分子受体和手性光学传感器，报告了在纯水溶液中具有芳香族二肽序列特异性的手性自适应识别 (CAR) 。1可以选择性地结合和二聚化芳香族二肽，形成 1 : 2 主客体复合物，具有高结合亲和力 (>10 10 M -2 )，尤其是高达∼10 14 M -2的 TrpTrp。鉴于 TPE 单元的动态旋转构象，非手性1可以通过主客体复合物中的超分子手性转移对对映体二肽表现出镜像对称圆二色性 (CD) 和圆偏振发光 (CPL) 光谱的手性适应性响应。此外，这种序列特异性为1的 CAR可用于分子识别含有 TrpTrp 或 PhePhe 的四肽、多肽（例如，淀粉样蛋白 β-肽1-20和生长抑素）和具有特征性 CD 的蛋白质（例如，人胰岛素）回应。
• Aminolytic reaction catalyzed by d-stereospecific amidohydrolases from Streptomyces spp
  作者：Jiro Arima、Hitomi Ito、Tadashi Hatanaka、Nobuhiro Mori

  DOI：10.1016/j.biochi.2011.04.020

  日期：2011.9

  From investigation of 2000 soil isolates, we identified two serine-type amidohydrolases that can hydrolyze D-aminoacyl derivatives from the culture supernatant of Streptomyces species 82F2 and 83D12. The enzymes, redesignated as 82F2-DAP and 83D12-DAP, were purified for homogeneity and characterized. Each enzyme had molecular mass of approximately 40 kDa, and each showed moderate stability with respect to temperature and pH. Among hydrolytic activities toward D-aminoacyl-pNAs, the enzymes showed strict specificity toward D-Phe-pNA, but showed broad specificity toward D-aminoacyl esters. The specific activity for D-Phe-pNA hydrolysis of 82F2-DAP was ten-fold higher than that of 83D12-DAP. As a second function, each enzyme showed peptide bond formation activity by its function of aminolysis reaction. Based on results of D-Phe D-Phe synthesis under various conditions, we propose a reaction mechanism for D-Phe D-Phe production. Furthermore, the enzymes exhibited peptide elongation activity, producing oligo homopeptide in a one-pot reaction. We cloned the genes encoding each enzyme, which revealed that the primary structure of each enzyme showed 30-60% identity with those of peptidases belonging to the clan SE, S12 peptidase family categorized as serine peptidase with D-stereospecificity. (C) 2011 Elsevier Masson SAS. All rights reserved.
• Substrate and Reaction Specificity of Mycobacterium tuberculosis Cytochrome P450 CYP121
  作者：Matthieu Fonvielle、Marie-Hélène Le Du、Olivier Lequin、Alain Lecoq、Mickaël Jacquet、Robert Thai、Steven Dubois、Guillaume Grach、Muriel Gondry、Pascal Belin

  DOI：10.1074/jbc.m112.443853

  日期：2013.6

  Cytochrome P450 CYP121 is essential for the viability of Mycobacterium tuberculosis. Studies in vitro show that it can use the cyclodipeptide cyclo(L-Tyr-L-Tyr) (cYY) as a substrate. We report an investigation of the substrate and reaction specificities of CYP121 involving analysis of the interaction between CYP121 and 14cYY analogues with various modifications of the side chains or the diketopiperazine (DKP) ring. Spectral titration experiments show that CYP121 significantly bound only cyclodipeptides with a conserved DKP ring carrying two aryl side chains in L-configuration. CYP121 did not efficiently or selectively transform any of the cYY analogues tested, indicating a high specificity for cYY. The molecular determinants of this specificity were inferred from both crystal structures of CYP121-analog complexes solved at high resolution and solution NMR spectroscopy of the analogues. Bound cYY or its analogues all displayed a similar set of contacts with CYP121 residues Asn(85), Phe(168), and Trp(182). The propensity of the cYY tyrosyl to point toward Arg(386) was dependent on the presence of the DKP ring that limits the conformational freedom of the ligand. The correct positioning of the hydroxyl of this tyrosyl was essential for conversion of cYY. Thus, the specificity of CYP121 results from both a restricted binding specificity and a fine-tuned P450 substrate relationship. These results document the catalytic mechanism of CYP121 and improve our understanding of its function in vivo. This work contributes to progress toward the design of inhibitors of this essential protein of M. tuberculosis that could be used for antituberculosis therapy.