3-D modeling and molecular dynamics simulation of interleukin-22 from the So-iny mullet, Liza haematocheila

• Zhitao Qi ^[1] ; Rongwei Shi ^[2] ; Suyang Li ^[1] ; Xiayan Zang ^[3] ; Zisheng Wang ^[1]
  1. [1] Yancheng Institute of Technology

     Yancheng Institute of Technology

     China

     
  2. [2] East China University of Science and Technology

     East China University of Science and Technology

     China

     
  3. [3] Henan Normal University

     Henan Normal University

     China

     

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• Localización: Electronic Journal of Biotechnology, ISSN-e 0717-3458, Vol. 16, Nº. 4, 2013, págs. 3-3
• Idioma: inglés
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  • Background: Interleukin-22 (IL-22) plays an important role in the regulation of immune responses. However, little is known about its function or structure in fish. Results: The IL-22 gene was first cloned from So-iny mullet (Liza haematocheila), one of commercially important fish species in China. Then, 3-D structure model of the mullet IL-22 was constructed by comparative modeling method using human IL-22 (1M4R) as template, and a 5 ns molecular dynamics (MD) was studied. The open reading frame (ORF) of mullet IL-22 cDNA was 555 bp, encoding 184 amino acids. The mullet IL-22 shared higher identities with the other fish IL-22 homologs and possessed a conserved IL-10 signature motif at its C-terminal. The mullet IL-22 model possessed six conserved helix structure. PROCHECK, SAVES and Molprobity server analysis confirmed that this model threaded well with human IL-22. Strikingly, analysis with CastP, cons-PPISP server suggested that the cysteines in mullet IL-22 might not be involved in the forming of disulfide bond for structural stabilization, but related to protein-protein interactions. Conclusions: The structure of IL-22 in So-iny mullet (Liza haematocheila) was constructed using comparative modeling method which provide more information for studying the function of fish IL-22.