Expression of extracellular phospholipase from Serratia liquefaciens is growth-phase-dependent, catabolite-repressed and regulated by anaerobiosis
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Expression of extracellular phospholipase from Serratia liquefaciens is growth-phase-dependent, catabolite-repressed and regulated by anaerobiosis. / Givskov, M; Molin, Søren.
In: Molecular Microbiology, Vol. 6, No. 10, 1992, p. 1363-74.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Expression of extracellular phospholipase from Serratia liquefaciens is growth-phase-dependent, catabolite-repressed and regulated by anaerobiosis
AU - Givskov, M
AU - Molin, Søren
PY - 1992
Y1 - 1992
N2 - Many members of the genus Serratia synthesize and excrete a number of extracellular hydrolytic enzymes. One of these is the phospholipase A1 from Serratia liquefaciens, the expression of which is growth-phase-dependent. Through the use of gene fusions and primer extension analysis we show that the expression of phospholipase is subject to positive transcriptional regulation of a dual promoter system; one promoter positioned approximately 600bp upstream from the phlA gene is responsible for the induction of phospholipase expression under anaerobic conditions, and the other promoter positioned 50bp upstream from the phlA gene is subject to catabolite repression and induced during the transition from exponential to late log-phase of bacterial growth. On the basis of sequence homology and behaviour in the relevant Escherichia coli mutants, we suggest that distant promoter to be Fnr-controlled and the proximal phlA promoter to be a member of the FIbB-controlled flagellar-chemotaxis regulon.
AB - Many members of the genus Serratia synthesize and excrete a number of extracellular hydrolytic enzymes. One of these is the phospholipase A1 from Serratia liquefaciens, the expression of which is growth-phase-dependent. Through the use of gene fusions and primer extension analysis we show that the expression of phospholipase is subject to positive transcriptional regulation of a dual promoter system; one promoter positioned approximately 600bp upstream from the phlA gene is responsible for the induction of phospholipase expression under anaerobic conditions, and the other promoter positioned 50bp upstream from the phlA gene is subject to catabolite repression and induced during the transition from exponential to late log-phase of bacterial growth. On the basis of sequence homology and behaviour in the relevant Escherichia coli mutants, we suggest that distant promoter to be Fnr-controlled and the proximal phlA promoter to be a member of the FIbB-controlled flagellar-chemotaxis regulon.
M3 - Journal article
C2 - 1640837
VL - 6
SP - 1363
EP - 1374
JO - Molecular Microbiology
JF - Molecular Microbiology
SN - 0950-382X
IS - 10
ER -
ID: 44293637