| 1035864-86-8

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 2 '，5'-二脱氧核苷
• CAS: 1035864-86-8
• 化学式: C₂₇H₂₈N₆O₉
• 分子量: 580.554
• InChiKey: GHNRBYOJROFVIY-GHSBAYPOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.87
• 重原子数：
  42.0
• 可旋转键数：
  11.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  203.96
• 氢给体数：
  4.0
• 氢受体数：
  12.0

反应信息

• 作为反应物：
  描述：

  、 4,4'-双甲氧基三苯甲基氯 在 吡啶 作用下， 反应 2.0h， 以51%的产率得到
  参考文献：
  名称：

  Trapping and Structural Elucidation of a Very Advanced Intermediate in the Lesion-Extrusion Pathway of hOGG1

  摘要：

  Here we present the first structure of a very advanced intermediate in the lesion-extrusion pathway of a DNA glycosylase, human 8-oxoguanine DNA glycosylase (hOGG1), and a substrate DNA containing a mutagenic lesion, 8-oxoguanine (oxoG). The structure was obtained by irradiation and flash-freezing of a disulfide-cross-linked (DXLed) complex of hOgg1 bound to DNA containing a novel photocaged derivative of oxoG. The X-ray structure reveals that upon irradiation, the oxoG lesion has transited from the exosite to the active site pocket, but has not undergone cleavage by the enzyme. Furthermore, all but one of the specificity-determining interactions between the lesion and the enzyme are unformed in the flashed complex (FC), because active site functionality and elements of the DNA backbone are mispositioned. This structure thus provides a first glimpse into the structure of a very late-stage intermediate in the lesion-extrusion pathway-the latest observed to date for any glycosylase-in which the oxoG has undergone insertion into the enzyme active site following photodeprotection, but the enzyme and DNA have not yet completed the slower process of adjusting to the presence of the lesion in the active site.

  DOI：

  10.1021/ja800821t
• 作为产物：
  描述：

  在 sodium hydroxide 作用下， 以 水 为溶剂， 反应 0.17h， 以89%的产率得到
  参考文献：
  名称：

  Trapping and Structural Elucidation of a Very Advanced Intermediate in the Lesion-Extrusion Pathway of hOGG1

  摘要：

  Here we present the first structure of a very advanced intermediate in the lesion-extrusion pathway of a DNA glycosylase, human 8-oxoguanine DNA glycosylase (hOGG1), and a substrate DNA containing a mutagenic lesion, 8-oxoguanine (oxoG). The structure was obtained by irradiation and flash-freezing of a disulfide-cross-linked (DXLed) complex of hOgg1 bound to DNA containing a novel photocaged derivative of oxoG. The X-ray structure reveals that upon irradiation, the oxoG lesion has transited from the exosite to the active site pocket, but has not undergone cleavage by the enzyme. Furthermore, all but one of the specificity-determining interactions between the lesion and the enzyme are unformed in the flashed complex (FC), because active site functionality and elements of the DNA backbone are mispositioned. This structure thus provides a first glimpse into the structure of a very late-stage intermediate in the lesion-extrusion pathway-the latest observed to date for any glycosylase-in which the oxoG has undergone insertion into the enzyme active site following photodeprotection, but the enzyme and DNA have not yet completed the slower process of adjusting to the presence of the lesion in the active site.

  DOI：

  10.1021/ja800821t