Characterization of oligonucleotide probes for the identification of Acinetobacter spp., A. baumannii and Acinetobacter genomic species 3
Autor: | C. Monti-Bragadin, L. Dolzani, C. Lagatolla, Enrico Angelo Tonin, A. Lavenia |
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Přispěvatelé: | Lagatolla, Cristina, Lavenia, A, Tonin, ENRICO ANGELO, MONTI BRAGADIN, Carlo, Dolzani, Lucilla |
Jazyk: | angličtina |
Rok vydání: | 1998 |
Předmět: |
DNA
Bacterial Sequence analysis Molecular Sequence Data RNA Transfer Ala Microbiology DNA Ribosomal Sensitivity and Specificity Conserved sequence Species Specificity RNA Ribosomal 16S Cloning Molecular RNA Transfer Ile Molecular Biology Ribosomal DNA Genetics biology Acinetobacter Nucleic Acid Hybridization General Medicine Spacer DNA Sequence Analysis DNA biology.organism_classification Acinetobacter baumannii RNA Ribosomal 23S Oligomer restriction Molecular probe Oligonucleotide Probes Sequence Alignment |
Popis: | The 16S-23S intergenic spacer regions of four Acinetobacter genomic species belonging to the A. calcoaceticus-A. baumannii (Acb) complex, i.e. genomic species 1 (A. calcoaceticus), genomic species 2 (A. baumannii), genomic species 3 and Tjernberg and Ursing (TU) genomic species 13, have been cloned and sequenced. Sequence analysis led to the discovery of a single copy of lle and Ala tRNA genes within each spacer. Sequence comparison allowed the identification of a 192-base-pair long highly conserved sequence between the 3′ end of the 16S rRNA and the 5′ end of the tRNAAla genes. Moreover, two short regions, which were specific to, respectively, genomic species 2 and 3, could be identified. Oligonucleotides corresponding to these sequences were constructed and tested for the ability to hybridize with chromosomal DNA extracted from Acinetobacter belonging to different genomic species and with chromosomal DNA of other bacterial genera. One of these oligonucleotides was demonstrated to be useful as a sensitive and specific probe for A. baumannii. A less sensitive probe for Acinetobacter genomic species 3 was also developed. |
Databáze: | OpenAIRE |
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