[[(2R,3S,4R,5R)-5-[6-amino-8-(6-aminohexylamino)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoyl-4H-pyridin-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl hydrogen phosphate | 52977-34-1

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - （5'->5'）-二核苷酸
• 英文名称: [[(2R,3S,4R,5R)-5-[6-amino-8-(6-aminohexylamino)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoyl-4H-pyridin-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl hydrogen phosphate
• CAS: 52977-34-1
• 化学式: C₂₇H₄₃N₉O₁₄P₂
• 分子量: 779.638
• InChiKey: VBRLTJBEXAGFLV-MXWJQMKOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -7.2
• 重原子数：
  52
• 可旋转键数：
  18
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.63
• 拓扑面积：
  356
• 氢给体数：
  10
• 氢受体数：
  21

反应信息

• 作为产物：
  描述：

  β-烟酰胺腺嘌呤二核苷酸 在 baker's yeast alcohol dehydrogenase 、 溴 作用下， 以 水 、 二甲基亚砜 为溶剂， 反应 6.0h， 生成 [[(2R,3S,4R,5R)-5-[6-amino-8-(6-aminohexylamino)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoyl-4H-pyridin-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl hydrogen phosphate
  参考文献：
  名称：

  Kinetics and docking studies on the effect of chemical modification of NADH for redox reactions with dehydrogenases

  摘要：

  Cofactor analogs promise important applications in biosynthesis. The effect of chemical modification on the reactivity of NADH for redox reactions catalyzed by dehydrogenases was examined in this work. Compared with the native NADH, kinetics and molecular docking studies with 8-(6-aminohexyl)-amino-NADH showed that its binding with alcohol dehydrogenase (ADH) was not much affected or even enhanced by a factor of 4.9-fold with lactate dehydrogenase (LDH), but complicated the binding of substrates to the enzymes. For ADH, the Michaelis constant for acetaldehyde decreased from 0.47 to 0.048 mM, while that of sodium pyruvate with LDH increased to 0.81 from 0.18 mM. On the other hand, the modified coenzyme showed a 19.3-fold decrease in turnover number (k(cat)) with ADH, while a slight increase with LDH. Molecular docking analysis showed that the hexanediamine arm on the modified coenzyme generated an extra hydrogen bond at the active site of ADH, as well as additional hydrophobic interactions with both ADH and LDH. It appeared that the apparently decreased reactivity of modified cofactor with ADH was caused mainly by the enhanced stability of ternary coenzyme-enzyme-substrate complex, while in the case of LDH, the reduced substrate binding as a result of the chemical modification of NADH led to a slight increase in the overall reaction reactivity. (C) 2012 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcatb.2012.01.018

文献信息

• Kinetics and docking studies on the effect of chemical modification of NADH for redox reactions with dehydrogenases
  作者：Hongjing Ma、Songping Zhang、Zhiguo Su、Ping Wang

  DOI：10.1016/j.molcatb.2012.01.018

  日期：2012.5

  Cofactor analogs promise important applications in biosynthesis. The effect of chemical modification on the reactivity of NADH for redox reactions catalyzed by dehydrogenases was examined in this work. Compared with the native NADH, kinetics and molecular docking studies with 8-(6-aminohexyl)-amino-NADH showed that its binding with alcohol dehydrogenase (ADH) was not much affected or even enhanced by a factor of 4.9-fold with lactate dehydrogenase (LDH), but complicated the binding of substrates to the enzymes. For ADH, the Michaelis constant for acetaldehyde decreased from 0.47 to 0.048 mM, while that of sodium pyruvate with LDH increased to 0.81 from 0.18 mM. On the other hand, the modified coenzyme showed a 19.3-fold decrease in turnover number (k(cat)) with ADH, while a slight increase with LDH. Molecular docking analysis showed that the hexanediamine arm on the modified coenzyme generated an extra hydrogen bond at the active site of ADH, as well as additional hydrophobic interactions with both ADH and LDH. It appeared that the apparently decreased reactivity of modified cofactor with ADH was caused mainly by the enhanced stability of ternary coenzyme-enzyme-substrate complex, while in the case of LDH, the reduced substrate binding as a result of the chemical modification of NADH led to a slight increase in the overall reaction reactivity. (C) 2012 Elsevier B.V. All rights reserved.