Nickel-inducible lysis system in Synechocystis sp. PCC 6803

Xinyao Liu, Roy Curtiss

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


We designed and constructed a controllable inducing lysis system in Synechocystis sp. PCC 6803 to facilitate extracting lipids for biofuel production. Several bacteriophage-derived lysis genes were integrated into the genome and placed downstream of a nickel-inducible signal transduction system. We applied 3 strategies: (i) directly using the phage lysis cassette, (ii) constitutively expressing endolysin genes while restricting holin genes, and (iii) combining lysis genes from different phages. Significant autolysis was induced in the Synechocystis sp. PCC 6803 cells with this system by the addition of NiSO4. Our inducible cyanobacterial lysing system eliminates the need for mechanical or chemical cell breakage and could facilitate recovery of biofuel from cyanobacteria.

Original languageEnglish (US)
Pages (from-to)21550-21554
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number51
StatePublished - Dec 22 2009


  • Biofuel
  • Phage lysis genes

ASJC Scopus subject areas

  • General


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