Functional analysis of six genes from chromosomes XIV and XV of Saccharomyces cerevisiae reveals YOR145c as an essential gene and YNL059c/ARP5 as a strain-dependent essential gene encoding nuclear proteins
✍ Scribed by Sandrine Grava; Pascal Dumoulin; Ammar Madania; Ivan Tarassov; Barbara Winsor
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 253 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0749-503X
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✦ Synopsis
We report here basic functional analysis of strains deleted for six open reading frames (ORFs), YNL059c and YNL148c from chromosome XIV and YOR145c, YOR152c, YOR161c and YOR162c from chromosome XV of Saccharomyces cerevisiae. ORFs were replaced with the KanMX4 resistance marker using a long ¯anking homology PCR strategy in FY1679 and W303 diploid strains. Replacement cassettes were constructed in plasmid pUG7 and the cognate wild-type genes were recovered by gap repair. Sporulation and tetrad analysis revealed that deletion of YNL059c/ARP5 was lethal for vegetative growth in strain W303 and caused severe growth defects in strain FY1679 while YOR145c was essential for growth in both strains. Fusion of the green ¯uorescent protein (GFP) gene to the 3k ends of the YNL059c/ARP5 and YOR145c coding sequences created functional chimeric genes at the respective chromosomal loci. Both Arp5±GFP and Yor145±GFP localized to the nucleus, Yor145±GFP concentrating in the nucleolus. The vectors containing the deletion cassettes and the cognate wild-type genes, the oligonucleotides, and the deletant strains are available from the EUROFAN resource centre EUROSCARF (Frankfurt).