title: A procedure for systematic identification of bacteriophage-host interactions of P. aeruginosa phages.
abstract: Immediately after bacteriophage infection, phage early proteins establish optimal conditions for phage infection, often through a direct interaction with host-cell proteins. We implemented a yeast two-hybrid approach for Pseudomonas aeruginosa phages as a first step in the analysis of these - often uncharacterized - proteins. A 24-fold redundant prey library of P. aeruginosa PAO1 (7.32x10(6) independent clones), was screened against early proteins (gp1 to 9) of phiKMV, a P. aeruginosa-infecting member of the Podoviridae; interactions were verified using an independent in vitro assay. None resembles previously known bacteriophage-host interactions, as the three identified target malate synthase G, a regulator of a secretion system and a regulator of nitrogen assimilation. Although at least two-bacteriophage infections are non-essential to phiKMV infection, their disruption has an influence on infection efficiency. This methodology allows systematic analysis of phage proteins and is applicable as an interaction analysis tool for P. aeruginosa.
authors.affiliation: Division of Gene Technology, Department of Biosystems, Katholieke Universiteit Leuven, Kasteelpark Arenberg 21 box 2462, Leuven, B-3001, Belgium. bart.roucourt@biw.kuleuven.be
authors.forename: Bart
authors.initials: B
authors.lastname: Roucourt
authors.forename: Elke
authors.initials: E
authors.lastname: Lecoutere
authors.forename: Andrew
authors.initials: A
authors.lastname: Chibeu
authors.forename: Kirsten
authors.initials: K
authors.lastname: Hertveldt
authors.forename: Guido
authors.initials: G
authors.lastname: Volckaert
authors.forename: Rob
authors.initials: R
authors.lastname: Lavigne
mesh_terms: D004279:DNA, Viral / Q000235:genetics / Q000378:metabolism; D017902:Podoviridae / Q000235:genetics / Q000378:metabolism*; D017105:Pseudomonas Phages / Q000235:genetics / Q000378:metabolism*; D011550:Pseudomonas aeruginosa / Q000235:genetics / Q000378:metabolism / Q000821:virology*; D020798:Two-Hybrid System Techniques; D014764:Viral Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: D004279:DNA, Viral; D014764:Viral Proteins