Four-component pharmacophore model for endomorphins toward μ opioid receptor subtypes

Yng Ching Wu, Tim Jaglinski, Jin Yuan Hsieh, Jia Jyun Chiu, Tzen Yuh Chiang, Chi Chuan Hwang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)


In the present work, a series of simulation tools were used to determine structure-activity relationships for the endomorphins (EMs) and derive μ-pharmacophore models for these peptides. Potential lowest energy conformations were determined in vacuo by systematically varying the torsional angles of the Tyr 1-Pro 21) and Pro 2- Trp 3/Phe 32) as tuning parameters in AM1 calculations. These initial models were then exposed to aqueous conditions via molecular dynamics simulations. In aqueous solution, the simulations suggest that endomorphin conformers strongly favor the trans/trans pair of the ω 12 amide bonds. From two-dimensional probability distributions of the ring-to-ring distances with respect to the pharmacophoric angles for EMs, a selectivity range of μ 1 is ca. 8.3~10.5 Å for endomorphin-2 and selectivity range of μ 2 is ca. 10.5~13.0 Å for endomorphin-1 were determined. Four-component μ-pharmacophore models are proposed for EMs and are compared to the previously published δ- and κ-pharmacophore models.

頁(從 - 到)825-834
期刊Journal of Molecular Modeling
出版狀態Published - 2012 2月

All Science Journal Classification (ASJC) codes

  • 催化
  • 電腦科學應用
  • 物理與理論化學
  • 有機化學
  • 計算機理論與數學
  • 無機化學


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