title: Antibacterial activity of a lectin-like Burkholderia cenocepacia protein.
abstract: Bacteriocins of the LlpA family have previously been characterized in the γ-proteobacteria Pseudomonas and Xanthomonas. These proteins are composed of two MMBL (monocot mannose-binding lectin) domains, a module predominantly and abundantly found in lectins from monocot plants. Genes encoding four different types of LlpA-like proteins were identified in genomes from strains belonging to the Burkholderia cepacia complex (Bcc) and the Burkholderia pseudomallei group. A selected recombinant LlpA-like protein from the human isolate Burkholderia cenocepacia AU1054 displayed narrow-spectrum genus-specific antibacterial activity, thus representing the first functionally characterized bacteriocin within this β-proteobacterial genus. Strain-specific killing was confined to other members of the Bcc, with mostly Burkholderia ambifaria strains being susceptible. In addition to killing planktonic cells, this bacteriocin also acted as an antibiofilm agent.
authors.affiliation: Centre of Microbial and Plant Genetics, University of Leuven, Kasteelpark Arenberg 20 box 2460, 3001, Heverlee-Leuven, Belgium.
authors.forename: Maarten G K
authors.initials: MG
authors.lastname: Ghequire
authors.forename: Evelien
authors.initials: E
authors.lastname: De Canck
authors.forename: Pierre
authors.initials: P
authors.lastname: Wattiau
authors.forename: Iris
authors.initials: I
authors.lastname: Van Winge
authors.forename: Remy
authors.initials: R
authors.lastname: Loris
authors.forename: Tom
authors.initials: T
authors.lastname: Coenye
authors.forename: René
authors.initials: R
authors.lastname: De Mot
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics / Q000494:pharmacology*; D001430:Bacteriocins / Q000235:genetics / Q000494:pharmacology*; D019117:Burkholderia / Q000187:drug effects* / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D019121:Burkholderia Infections / Q000382:microbiology; D006801:Humans; D037102:Lectins / Q000235:genetics / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests
chemical_list: D001426:Bacterial Proteins; D001430:Bacteriocins; D037102:Lectins
keywords: Antagonism; Burkholderia cepacia complex; LlpA; MMBL family; lectin-like bacteriocin; planktonic; sessile cells