The Journal of Microbiology

, Volume 49, Issue 6, pp 965–973 | Cite as

Dynamical analysis of yeast protein interaction network during the sake brewing process



Proteins interact with each other for performing essential functions of an organism. They change partners to get involved in various processes at different times or locations. Studying variations of protein interactions within a specific process would help better understand the dynamic features of the protein interactions and their functions. We studied the protein interaction network of Saccharomyces cerevisiae (yeast) during the brewing of Japanese sake. In this process, yeast cells are exposed to several stresses. Analysis of protein interaction networks of yeast during this process helps to understand how protein interactions of yeast change during the sake brewing process. We used gene expression profiles of yeast cells for this purpose. Results of our experiments revealed some characteristics and behaviors of yeast hubs and non-hubs and their dynamical changes during the brewing process. We found that just a small portion of the proteins (12.8 to 21.6%) is responsible for the functional changes of the proteins in the sake brewing process. The changes in the number of edges and hubs of the yeast protein interaction networks increase in the first stages of the process and it then decreases at the final stages.


protein interaction network dynamical analysis sake brewing hubs Saccharomyces cerevisiae 


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Copyright information

© The Microbiological Society of Korea and Springer-Verlag Berlin Heidelberg  2011

Authors and Affiliations

  1. 1.Department of Computer EngineeringIslamic Azad University, Science and Research BranchTehranIran
  2. 2.National Institute of Genetic Engineering and Biotechnology (NIGEB)TehranIran
  3. 3.School of Computer SciencesInstitute for Research in Fundamental Sciences, IPMTehranIran
  4. 4.Control and Intelligent Processing Center of Excellence, School of Electrical and Computer EngineeringUniversity of TehranTehranIran
  5. 5.School of Cognitive SciencesInstitute for Research in Fundamental Sciences, IPMTehranIran

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