PMID: 8955401Dec 1, 1996Paper

Regulation of pelZ, a gene of the pelB-pelC cluster encoding a new pectate lyase of Erwinia chrysanthemi 3937

Journal of Bacteriology
C PissavinN Hugouvieux-Cotte-Pattat

Abstract

The phytopathogenic enterobacterium Erwinia chrysanthemi 3937 produces five major and several secondary endo-pectate lyases encoded by the pel genes. Most of these genes are arranged in clusters on the bacterial chromosome. The genomic region surrounding the pelB-pelC cluster was supposed to be involved in the regulation of PelB and PelC synthesis. We demonstrated that the variation of pelB expression resulted from the titration of a regulatory protein by the gene adjacent to pelC. This gene was renamed pelZ since it encodes a protein of 420 amino acids with an endo-pectate lyase activity. Regulation of pelZ expression was investigated by using transcriptional fusions and a study of mRNA synthesis. Its transcription depends on different environmental conditions. It is induced in planta and in the presence of pectic catabolite products. This induction seems to be partially mediated by the KdgR protein but does not result from a direct interaction of KdgR with the pelZ 5' region. The transcription of pelZ leads to the synthesis of a monocistronic mRNA. However, the synthesis of a polycistronic mRNA from the pelC promoter, regulated by KdgR, is responsible for increased production of PelZ under inducing conditions. pelZ transcript...Continue Reading

References

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Citations

Oct 22, 1998·Molecular Microbiology·V E ShevchikN Hugouvieux-Cotte-Pattat
Jan 7, 1998·FEMS Microbiology Letters·C Pissavin, N Hugouvieux-Cotte-Pattat
Jan 1, 2003·Molecular Plant Pathology·Ian K TothPaul R J Birch
Jul 6, 2000·Bioscience, Biotechnology, and Biochemistry·S R ParkH D Yun
May 6, 2003·Journal of Bacteriology·Vladimir E Shevchik, Nicole Hugouvieux-Cotte-Pattat
Mar 10, 2005·Microbiology and Molecular Biology Reviews : MMBR·Anja Brencic, Stephen C Winans
Feb 27, 1999·Journal of Bacteriology·V E ShevchikN Hugouvieux-Cotte-Pattat
Apr 10, 1999·Journal of Bacteriology·M A BekriA Vande Broek
May 29, 1998·Biochimica Et Biophysica Acta·C PissavinN Hugouvieux-Cotte-Pattat
Dec 11, 1997·Journal of Bacteriology·V E ShevchikN Hugouvieux-Cotte-Pattat
Aug 1, 1997·Journal of Bacteriology·A Castillo, S Reverchon

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