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Flavohaemoglobin HmpX: a new pathogenicity determinant in Erwinia chrysanthemi strain 3937

Article Abstract:

The Flavohaemoglobin HmpX protein belongs to a family of flavohaemoproteins and it causes pathogenecity in plants that are contaminated with the Erwinia chrysanthemi strain 3937 enterobacterium. Mutated HmpX has reduced toxicity due to a lack of oxygen in plant intercellular fluid, as HmpX requires oxygen to flourish. Hydrophobic cluster analysis shows that HmpX has two functional regions, a haemoglobin domain in its N-terminal part and a flavin reductase domain in its C-terminal part. The induction of hmpX transcription in coculture with tobacco cells is found using gas fusion in hmpX.

Author: Favey, S., Labesse, G., Vouille, V., Boccara, M.
Publisher: Society for General Microbiology
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1995
Analysis, Observations, Enterobacteriaceae, Genetic transcription, Transcription (Genetics), Cluster analysis

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Functional characterization of the Erwinia chrysanthemi OutS protein, an element of a type II secretion system

Article Abstract:

Research was conducted to characterize the Erwinia chrysanthemi OutS protein, a type II secretion system element. Through ligand-blotting experiments, it was observed that the interaction of the secretin OutD with the OutS lipoprotein needs the 62 C-terminal amino acids of OutD. Results indicated that their interaction may not be terminated through the mutation of a single amino acid and that OutD insertion in the outer membrane may need additional proteins.

Author: Condemine, Guy, Shevchik, Vladimir E.
Publisher: Society for General Microbiology
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1998
Gram-negative bacteria, Physiological regulation, Bacterial proteins, Insertion elements, DNA, DNA insertion elements

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Overproduction of the secretin OutD suppresses the secretion defect of an Erwinia chrysanthemi outB mutant

Article Abstract:

OutB appears to interact with OutD in Erwinia chrysanthemi. This was demonstrated by showing that an overproduction of OutD could suppress a mutation in OutB. OutB is a component of the bacterium's secretion machinery.

Author: Condemine, Guy, Shevchik, Vladimir E.
Publisher: Society for General Microbiology
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 2000
Bacteria, Phytopathogenic, Phytopathogenic bacteria

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Subjects list: Research, Genetic aspects, Secretion
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