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Rapid degradation of N-3-oxo-acylhomoserine lactones by a Bacillus cereus isolate from Malaysian rainforest soil

A bacterial strain, KM1S, was isolated from a Malaysian rainforest soil sample by using a defined enrichment medium that specifically facilitates selection of quorum quenching bacteria. KM1S was clustered closely to Bacillus cereus by 16S ribosomal DNA sequence analysis. It degraded N-3-oxo-hexanoyl...

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Published in:Antonie van Leeuwenhoek 2010-10, Vol.98 (3), p.299-305
Main Authors: Chan, Kok-Gan, Wong, Cheng-Siang, Yin, Wai-Fong, Sam, Choon-Kook, Koh, Chong-Lek
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container_title Antonie van Leeuwenhoek
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creator Chan, Kok-Gan
Wong, Cheng-Siang
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Sam, Choon-Kook
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description A bacterial strain, KM1S, was isolated from a Malaysian rainforest soil sample by using a defined enrichment medium that specifically facilitates selection of quorum quenching bacteria. KM1S was clustered closely to Bacillus cereus by 16S ribosomal DNA sequence analysis. It degraded N-3-oxo-hexanoyl homoserine lactone and N-3-oxo-octanoyl homoserine lactone in vitro rapidly at 4.98 and 6.56 μg AHL h⁻¹ per 10⁹ CFU/ml, respectively, as determined by the Rapid Resolution Liquid Chromatography. The aiiA homologue, encoding an autoinducer inactivation enzyme catalyzing the degradation of N-acylhomoserine lactones, of KM1S was amplified and cloned. Sequence analysis indicated the presence of the motif ₁₀₆HXDH-59 amino acids-H₁₆₉-21 amino acids-D₁₉₁ for N-acylhomoserine lactone lactonases.
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KM1S was clustered closely to Bacillus cereus by 16S ribosomal DNA sequence analysis. It degraded N-3-oxo-hexanoyl homoserine lactone and N-3-oxo-octanoyl homoserine lactone in vitro rapidly at 4.98 and 6.56 μg AHL h⁻¹ per 10⁹ CFU/ml, respectively, as determined by the Rapid Resolution Liquid Chromatography. The aiiA homologue, encoding an autoinducer inactivation enzyme catalyzing the degradation of N-acylhomoserine lactones, of KM1S was amplified and cloned. Sequence analysis indicated the presence of the motif ₁₀₆HXDH-59 amino acids-H₁₆₉-21 amino acids-D₁₉₁ for N-acylhomoserine lactone lactonases.</description><identifier>ISSN: 0003-6072</identifier><identifier>EISSN: 1572-9699</identifier><identifier>DOI: 10.1007/s10482-010-9438-0</identifier><identifier>PMID: 20376561</identifier><identifier>CODEN: ANLEDR</identifier><language>eng</language><publisher>Dordrecht: Dordrecht : Springer Netherlands</publisher><subject>4-Butyrolactone - analogs &amp; derivatives ; 4-Butyrolactone - metabolism ; Acyl-Butyrolactones - metabolism ; Amino Acid Sequence ; Amino acids ; Bacillus cereus ; Bacillus cereus - genetics ; Bacillus cereus - isolation &amp; purification ; Bacillus cereus - metabolism ; Bacteria ; Bacterial Proteins - metabolism ; Bacteriology ; Biochemistry ; Biological and medical sciences ; Carboxylic Ester Hydrolases - biosynthesis ; Chromobacterium - metabolism ; Cloning, Molecular ; DNA, Bacterial ; Escherichia coli - genetics ; Fundamental and applied biological sciences. 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subjects 4-Butyrolactone - analogs & derivatives
4-Butyrolactone - metabolism
Acyl-Butyrolactones - metabolism
Amino Acid Sequence
Amino acids
Bacillus cereus
Bacillus cereus - genetics
Bacillus cereus - isolation & purification
Bacillus cereus - metabolism
Bacteria
Bacterial Proteins - metabolism
Bacteriology
Biochemistry
Biological and medical sciences
Carboxylic Ester Hydrolases - biosynthesis
Chromobacterium - metabolism
Cloning, Molecular
DNA, Bacterial
Escherichia coli - genetics
Fundamental and applied biological sciences. Psychology
Genes, Bacterial
Gram-Negative Bacteria
Inactivation
KG medium
Liquid chromatography
Malaysia
Microbiology
Miscellaneous
Molecular Sequence Data
N-acylhomoserine lactone
Quorum quenching
Quorum Sensing
Rainforest soil
Rainforests
Sequence Analysis, DNA
Soil Microbiology
Soil sciences
Trees
title Rapid degradation of N-3-oxo-acylhomoserine lactones by a Bacillus cereus isolate from Malaysian rainforest soil
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