| pubmed-article:12450860 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:12450860 | lifeskim:mentions | umls-concept:C0314787 | lld:lifeskim |
| pubmed-article:12450860 | lifeskim:mentions | umls-concept:C0314603 | lld:lifeskim |
| pubmed-article:12450860 | lifeskim:mentions | umls-concept:C0441587 | lld:lifeskim |
| pubmed-article:12450860 | lifeskim:mentions | umls-concept:C0936012 | lld:lifeskim |
| pubmed-article:12450860 | lifeskim:mentions | umls-concept:C0079411 | lld:lifeskim |
| pubmed-article:12450860 | lifeskim:mentions | umls-concept:C0243072 | lld:lifeskim |
| pubmed-article:12450860 | pubmed:dateCreated | 2002-11-26 | lld:pubmed |
| pubmed-article:12450860 | pubmed:abstractText | Acinetobacter baumannii is a metabolically versatile pathogen that causes severe infections in compromised patients. However, little is known about the genes and factors involved in its basic physiology and virulence properties. Insertion mutagenesis was used to initiate the identification and characterization of some of these factors and genes in the prototype strain 19606. The utilization of the pLOFKm suicide delivery vector, which harbors a suicide mini-Tn10 derivative, proved to be unsuccessful for this purpose. The EZ::TN <R6Kgammaori/KAN-2> Tnp transposome system available from Epicentre was then used in conjunction with electroporation to generate isogenic insertional derivatives of A. baumannii 19606. Replica plating showed that 2% of the colonies that grew after electroporation on agar plates without antibiotics also grew in the presence of 40 micro g of kanamycin per ml. DNA hybridization proved that all of the kanamycin-resistant derivatives contained the EZ::TN <R6Kgammaori/KAN-2> insertion element, which was mapped to different genomic locations. Replica plating on Simmons citrate agar and microtiter plate-plastic tube assays identified growth- and biofilm-defective derivatives, respectively. The location of the insertion in several of these derivatives was determined by self-ligation of NdeI- or EcoRI-digested genomic DNA and electroporation of Escherichia coli TransforMax EC100D (pir(+)). Sequence analysis of the recovered plasmids showed that some of the A. baumannii 19606 growth-defective derivatives contain insertions within genes encoding activities required for the generation of energy and cell wall components and for the biosynthesis of amino acids and purines. A gene encoding a protein similar to the GacS sensor kinase was interrupted in four derivatives, while another had an insertion in a gene coding for a hypothetical sensor kinase. A. baumannii 19606 derivatives with defective attachment or biofilm phenotypes had insertions within genes that appear to be part of a chaperone-usher transport system described for other bacteria. DNA hybridization experiments showed that the presence of strain 19606 genes encoding regulatory and attachment or biofilm functions is widespread among other A. baumannii clinical isolates. | lld:pubmed |
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| pubmed-article:12450860 | pubmed:language | eng | lld:pubmed |
| pubmed-article:12450860 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:12450860 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:12450860 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:12450860 | pubmed:author | pubmed-author:ActisLuis ALA | lld:pubmed |
| pubmed-article:12450860 | pubmed:author | pubmed-author:DorseyCaleb... | lld:pubmed |
| pubmed-article:12450860 | pubmed:author | pubmed-author:TomarasAndrew... | lld:pubmed |
| pubmed-article:12450860 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:12450860 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:12450860 | pubmed:pagination | 6353-60 | lld:pubmed |
| pubmed-article:12450860 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
| pubmed-article:12450860 | pubmed:articleTitle | Genetic and phenotypic analysis of Acinetobacter baumannii insertion derivatives generated with a transposome system. | lld:pubmed |
| pubmed-article:12450860 | pubmed:affiliation | Department of Microbiology, Miami University, Oxford, Ohio 45056, USA. | lld:pubmed |
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