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A plasmid-borne truncated luxI homolog controls quorum-sensing systems and extracellular carbohydrate production in Methylobacterium extorquens AM1.

Penalver, Carlos G Nieto; Cantet, Franck; Morin, Danièle; Haras, Dominique; Vorholt, Julia A.

J Bacteriol ; 188(20): 7321-4, 2006 Oct.

Article in English | MEDLINE | ID: mdl-17015673

ABSTRACT

A cryptic plasmid of Methylobacterium extorquens AM1 was found to encode tslI, a truncated luxI homolog. tslI was shown to be expressed and to control transcription of the acyl-homoserine lactone (HSL) synthase gene msaI and thus, indirectly, acyl-HSL production. In addition, tslI was found to positively regulate extracellular polysaccharide production.

Subject(s)

Adaptation, Physiological/genetics , Bacterial Proteins/physiology , Carbohydrates/biosynthesis , Ligases/biosynthesis , Methylobacterium extorquens/physiology , Plasmids/genetics , Transcription Factors/physiology , 4-Butyrolactone/analogs & derivatives , 4-Butyrolactone/analysis , Amino Acid Sequence , Bacterial Proteins/genetics , Gene Expression Regulation, Bacterial , Ligases/genetics , Methylobacterium extorquens/genetics , Molecular Sequence Data , RNA, Bacterial/analysis , RNA, Messenger/analysis , Sequence Alignment , Transcription Factors/genetics , Transcription, Genetic

ABSTRACT

Subject(s)

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