A computational study of the chemokine receptor CXCR1 bound with interleukin-8

  • Yang Wang
  • , Cecylia Severin Lupala
  • , Ting Wang
  • , Xuanxuan Li
  • , Ji Hye Yun
  • , Jae Hyun Park
  • , Zeyu Jin
  • , Weontae Lee
  • , Leihan Tan
  • , Haiguang Liu*
  • *Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

2 Citations (Scopus)

Abstract

CXCR1 is a G-protein coupled receptor, transducing signals from chemokines, in particular the interleukin-8 (IL8) molecules. This study combines homology modeling and molecular dynamics simulation methods to study the structure of CXCR1-IL8 complex. By using CXCR4-vMIP-II crystallography structure as the homologous template, CXCR1-IL8 complex structure was constructed, and then refined using all-atom molecular dynamics simulations. Through extensive simulations, CXCR1-IL8 binding poses were investigated in detail. Furthermore, the role of the N-terminal of CXCR1 receptor was studied by comparing four complex models differing in the N-terminal sequences. The results indicate that the receptor N-terminal affects the binding of IL8 significantly. With a shorter N-terminal domain, the binding of IL8 to CXCR1 becomes unstable. The homology modeling and simulations also reveal the key receptor-ligand residues involved in the electrostatic interactions known to be vital for complex formation.

Original languageEnglish
Article number038702
JournalChinese Physics B
Volume27
Issue number3
DOIs
Publication statusPublished - Mar 2018

User-Defined Keywords

  • CXCR1-IL8 complex
  • homology modeling
  • ligand binding
  • molecular dynamics

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