Markerless chromosomal gene deletion in Clostridium beijerinckii using CRISPR/Cas9 system

Yi Wang, Zhong Tian Zhang, Seung Oh Seo, Kijoong Choi, Ting Lu, Yong Su Jin, Hans P. Blaschek

Research output: Contribution to journalArticlepeer-review


The anaerobic spore-forming, gram-positive, solventogenic clostridia are notorious for being difficult to genetically engineer. Based on CRISPR/Cas9 assisted homologous recombination, we demonstrated that clean markerless gene deletion from the chromosome can be easily achieved with a high efficiency through a single-step transformation in Clostridium beijerinckii NCIMB 8052, one of the most prominent strains for acetone, butanol and ethanol (ABE) production. This highly efficient genome engineering system can be further explored for multiplex genome engineering purposes. The protocols and principles developed in this study provided valuable references for genome engineering in other microorganisms lacking developed genetic engineering tools.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalJournal of Biotechnology
StatePublished - Apr 1 2015


  • Butanol
  • CRISPR/Cas9
  • Clostridium
  • Genome engineering
  • Homologous recombination

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology


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