| Journal: | Electronic journal of biotechnology |
| Database: | PERIÓDICA |
| System number: | 000267204 |
| ISSN: | 0717-3458 |
| Authors: | Guacucano, Maritza1 Levican, Gloria2 Holmes, David Jedlicki, Eugenia |
| Institutions: | 1Universidad de Santiago, Laboratorio de Bioinformática y Microbiología Molecular, Santiago de Chile. Chile 2Universidad de Chile, Instituto de Ciencias Biomédicas, Santiago de Chile. Chile |
| Year: | 2000 |
| Season: | Dic |
| Volumen: | 3 |
| Number: | 3 |
| Country: | Chile |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | During the course of experiments involving RT-PCR to investigate the co-transcription of the pet and res operons of the bacterium Acidithiobacillus ferrooxidans we observed that the mRNA of certain gene pairs can be amplified by RT-PCR in the absence of added RT-primer. We provide experimental evidence that eliminates, as explanations for the observed results, the possible global contamination of the RNA preparation by genomic DNA or by contaminating single stranded DNA or RNA fragments. We suggest that the results can be explained by self-priming of the RNA perhaps as a result of secondary structure configurations that provide a suitable 3'-terminus to prime the reverse transcriptase. This type of artifact can be recognized by carrying out a control in which exogenously added RT-primers are left out of the reaction. Such a control is essential if RT-PCR is to be used to investigate and correctly identify operons. RT-PCR is also an important tool for the amplification of eukaryotic mRNAs and our observations may also be applicable to these systems |
| Disciplines: | Biología, Ciencias de la computación |
| Keyword: | Bacterias, Biotecnología, Operones, Acidithiobacillus ferrooxidans, Bioinformática, Genoma |
| Keyword: | Biology, Computer science, Bacteria, Operons, Acidithiobacillus ferrooxidans, Bioinformatics, Genome |
| Full text: | Texto completo (Ver HTML) |
