Mutations that increase the mitotic stability of minichromosomes in yeast: characterization of RAR1.
In an attempt to identify proteins involved in the initiation of DNA replication, we have isolated a series of Saccharomyces cerevisiae mutants in which the function of putative replication origins is affected. The phenotype of these Rar- (regulation of autonomous replication) mutants is to increase the mitotic stability of plasmids whose replication is dependent on weak ARS elements. These mutations are generally recessive and complementation analysis shows that mutations in several genes may improve the ability of weak ARS elements to function. One mutation (rar1-1) also confers temperature-sensitive growth, and thus an essential gene is affected. We have determined the DNA sequence of the RAR1 gene, which reveals an open reading frame for a 48.5 kDa protein. The RAR1 gene is linked to rna1 on chromosome XIII.
Kearsey
S E
SE
Department of Zoology, Oxford, UK.
Edwards
J
J
D000595:Amino Acid Sequence; D001483:Base Sequence; D002874:Chromosome Mapping; D002875:Chromosomes / Q000502:physiology*; D003001:Cloning, Molecular; D004261:DNA Replication; D005656:Fungal Proteins / Q000235:genetics*; D005800:Genes, Fungal; D005816:Genetic Complementation Test; D008938:Mitosis; D008969:Molecular Sequence Data; D010957:Plasmids; D012045:Regulatory Sequences, Nucleic Acid; D012441:Saccharomyces cerevisiae / Q000235:genetics*
D005656:Fungal Proteins