Systematic disruption of 456 ORFs in the yeast Saccharomyces cerevisiae.

In the framework of the European Network for Functional Analysis (EUROFAN), five packages of 96 ORFs from chromosomes III, IV, VII, XIII, XIV and XV were subjected to systematic deletions in an isogenic derivative of strain S288c. Deletions were constructed in diploid and haploid strains. Two questionable ORFs overlapping with larger ORFs and seven TY ORFs were discarded. A total of 456 heterozygous and 385 homozygous deletant diploids were obtained. Sixty-nine deletions, 25 of which had never been published before, were lethal in haploid strains and 30 caused slow cellular growth.