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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Reyrat, J. M. Gicquel, B. Berthet, F. X. |
| Description | Author Affiliation: Reyrat JM ( Unité de Génétique Mycobactérienne, Centre National de la Recherche Scientifique, Institut Pasteur 25, Paris, France.); |
| Abstract | The ureABC genes of Mycobacterium tuberculosis were cloned. By using a set of degenerate primers corresponding to a conserved region of the urease enzyme (EC 3.5.1.5), a fragment of the expected size was amplified by PCR and was used to screen a M. tuberculosis cosmid library. Three open reading frames with extensive similarity to the urease genes from other organisms were found. The locus was mapped on the chromosome, using an ordered M. tuberculosis cosmid library. A suicide vector containing a ureC gene disrupted by a kanamycin marker (aph) was used to construct a urease-negative Mycobacterium bovis bacillus Calmette-Guérin mutant by allelic exchange involving replacement of the ureC gene with the aph::ureC construct. To our knowledge, allelic exchange has not been reported previously in the slow-growing mycobacteria. Homologous recombination will be an invaluable genetic tool for deciphering the mechanisms of tuberculosis pathogenesis, a disease that causes 3 x 10(6) deaths a year worldwide. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 19 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Mycobacterium Bovis Genetics Mycobacterium Tuberculosis Recombination, Genetic Urease Alleles Amino Acid Sequence Blotting, Southern Chromosome Mapping Genome, Bacterial Genomic Library Genotype Molecular Sequence Data Mutagenesis, Insertional Enzymology Polymerase Chain Reaction Sequence Analysis, DNA Sequence Homology, Amino Acid Species Specificity Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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