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  • Title: The basidiomycete Lentinus edodes linear mitochondrial DNA plasmid contains a segment exhibiting a high autonomously replicating sequence activity in Saccharomyces cerevisiae.
    Author: Katayose Y, Kajiwara S, Shishido K.
    Journal: Nucleic Acids Res; 1990 Mar 25; 18(6):1395-400. PubMed ID: 2183190.
    Abstract:
    A linear DNA plasmid, designated pLLE1, has been isolated from a mitochondrial fraction of a strain of Lentinus edodes. pLLE1(11.0 kbp) was sensitive to the 3'----5'-acting exonuclease III and resistant to the 5'----3'-acting lambda exonuclease. It showed no homology with mitochondrial and nuclear genomic DNAs of plasmidless strain as well as the pLLE1-harboring host strain of L. edodes. The 1434-bp fragment (sequences) capable of autonomous replication in the yeast Saccharomyces cerevisiae (ARSs) was cloned from pLLE1 DNA with YIp32 (pBR322 containing yeast LEU2 DNA), which displayed a high ARS activity. The cloned 1434-bp fragment was shown to lie near to the end of pLLE1 DNA (nucleotides about 800-2200) and contained three consecutive ARS consensus sequences (A/T)TTTAT(A/G)TTT(A/T) of S. cerevisiae and dispersive eight ARS consensus-like sequences. The subcloned 366-bp fragment containing the three ARSs retained original ARS activity of the 1434-bp fragment.
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