pyrithiamine diphosphate | 36467-78-4

• 分子结构分类: 有机化合物 - 有机氧化合物 - 有机含氧阴离子化合物
• 英文名称: pyrithiamine diphosphate
• 英文别名: pyrithiamine pyrophosphate；PTPP；2-[1-[(4-amino-2-methylpyrimidin-5-yl)methyl]-2-methylpyridin-1-ium-3-yl]ethyl phosphono hydrogen phosphate
• CAS: 36467-78-4
• 化学式: C₁₄H₂₁N₄O₇P₂
• 分子量: 419.291
• InChiKey: ZHKSTKOYQKNDSJ-UHFFFAOYSA-O

计算性质

• 辛醇/水分配系数(LogP)：
  -1.3
• 重原子数：
  27
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  169
• 氢给体数：
  4
• 氢受体数：
  10

反应信息

• 作为产物：
  描述：

  新吡啶硫胺 在 磷酸 作用下， 反应 0.25h， 生成 pyrithiamine monophosphate 、 pyrithiamine diphosphate 、 pyrithiamine triphosphate
  参考文献：
  名称：

  Structural Basis of Thiamine Pyrophosphate Analogues Binding to the Eukaryotic Riboswitch

  摘要：

  The thiamine pyrophosphate (TPP)-sensing riboswitch is the only riboswitch found in eukaryotes. In plants, TPP regulates its own production by binding to the 3' untranslated region of the mRNA encoding ThiC, a critical enzyme in thiamine biosynthesis, which promotes the formation of an unstable splicing variant. In order to better understand the molecular basis of TPP-analogue binding to the eukaryotic TPP-responsive riboswitch, we have determined the crystal structures of the Arabidopsis thaliana TPP-riboswitch in complex with oxythiamine pyrophosphate (OTPP) and with the antimicrobial compound pyrithiamine pyrophosphate (PTPP). The OTPP-riboswitch complex reveals that the pyrimidine ring of OTPP is stabilized in its enol form in order to retain key interactions with guanosine 28 of the riboswitch previously observed in the TPP complex. The structure of PTPP in complex with the riboswitch shows that the base moiety of guanosine 60 undergoes a conformational change to cradle the pyridine ring of the PTPP. Structural information from these complexes has implications for the design of novel antimicrobials targeting TPP-sensing riboswitches.

  DOI：

  10.1021/ja801708e

文献信息

• Structural Basis of Thiamine Pyrophosphate Analogues Binding to the Eukaryotic Riboswitch
  作者：Stéphane Thore、Christian Frick、Nenad Ban

  DOI：10.1021/ja801708e

  日期：2008.7.1

  The thiamine pyrophosphate (TPP)-sensing riboswitch is the only riboswitch found in eukaryotes. In plants, TPP regulates its own production by binding to the 3' untranslated region of the mRNA encoding ThiC, a critical enzyme in thiamine biosynthesis, which promotes the formation of an unstable splicing variant. In order to better understand the molecular basis of TPP-analogue binding to the eukaryotic TPP-responsive riboswitch, we have determined the crystal structures of the Arabidopsis thaliana TPP-riboswitch in complex with oxythiamine pyrophosphate (OTPP) and with the antimicrobial compound pyrithiamine pyrophosphate (PTPP). The OTPP-riboswitch complex reveals that the pyrimidine ring of OTPP is stabilized in its enol form in order to retain key interactions with guanosine 28 of the riboswitch previously observed in the TPP complex. The structure of PTPP in complex with the riboswitch shows that the base moiety of guanosine 60 undergoes a conformational change to cradle the pyridine ring of the PTPP. Structural information from these complexes has implications for the design of novel antimicrobials targeting TPP-sensing riboswitches.