Applied Microbiology and Biotechnology

, Volume 74, Issue 6, pp 1333–1341 | Cite as

Random segment deletion based on IS31831 and Cre/loxP excision system in Corynebacterium glutamicum

  • Yota Tsuge
  • Nobuaki Suzuki
  • Masayuki Inui
  • Hideaki YukawaEmail author
Genomics and Proteomics


A simple and random genome deletion method combining insertion sequence (IS) element IS31831 and the Cre/loxP excision system generated 42 Corynebacterium glutamicum mutants (0.2–186 kb). A total of 393.6 kb (11.9% of C. glutamicum R genome) coding for 331 genes was confirmed to be nonessential under standard laboratory conditions. The deletion strains, generated using only two vectors, varied not only in their lengths but also the location of the deletion along the C. glutamicum R genome. By comparing and analyzing the generated deletion strains, identification of nonessential genes, the roles of genes of hitherto unknown function, and gene–gene interactions can be easily and efficiently determined.


Corynebacterium glutamicum Cre/loxP IS element Genomic engineering Random genome deletion 



We thank Prof. R. H. Doi (University of California at Davis) and Dr. C. Omumasaba (RITE) for critical reading of the manuscript. We are grateful to Dr. H. Nonaka (RITE, present Mie University) for providing us the useful website about C. glutamicum R genome information. This study was carried out as a part of the Project for Development of a Technological Infrastructure for Industrial Bioprocesses by the Ministry of Economy, Trade and Industry and was funded by the New Energy and Industrial Technology Development Organization.

Supplementary material

253_2006_788_MOESM1_ESM.doc (44 kb)
Supplementary Table 1Primers used for verification of deletion (DOC 44 kb)
253_2006_788_MOESM2_ESM.doc (98 kb)
Supplementary Table 2Deleted genes (DOC 100 kb)


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Yota Tsuge
    • 1
    • 2
  • Nobuaki Suzuki
    • 1
  • Masayuki Inui
    • 1
  • Hideaki Yukawa
    • 1
    • 2
    Email author
  1. 1.Research Institute of Innovative Technology for the Earth (RITE)Kizu-cho, Soraku-gunJapan
  2. 2.Graduate School of Biological SciencesNara Institute of Science and Technology (NAIST)Ikoma-shiJapan

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