Fluorescent Protein Vector for Directional Selection of PCR Clones
| Autor: | Slawomir Dabrowski, Anna Brillowska-Dabrowska, Józef Kur |
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| Jazyk: | angličtina |
| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | BioTechniques, Vol 29, Iss 4, Pp 800-808 (2000) |
| Druh dokumentu: | article |
| ISSN: | 1940-9818 0736-6205 |
| DOI: | 10.2144/00294st07 |
| Popis: | Green fluorescent protein (GFP) has become a convenient and versatile tool as a reporter protein in many aspects of science. Here, we show that the enhanced yellow fluorescent protein (EYFP) variant may be used advantageously as a reporter system for directional cloning of blunt-ended PCR products. We have constructed a pUC18-derived plasmid containing a reporter gene coding EYFP cloned into the BamHI/HindIII sites. The blunt-ended PCR product is cloned into the SmaI site of that plasmid. A reverse PCR primer must be designed with extra bases on the 5′end that are required to introduce a ribosome binding site (rbs) for EYFP expression. The reporter gene coding EYFP is not expressed unless an rbs is introduced in the proper orientation at the 3′end of the cloned PCR insert. The results of this cloning procedure may be analyzed by simple visual inspection using a transilluminator. In most cases, successful directional cloning results in white fluorescent colonies. The proposed procedure is a convenient method that can reduce the timeand labor-intensive analysis of the clones obtained during blunt-ended PCR product cloning. |
| Databáze: | Directory of Open Access Journals |
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