EU546820 6071 1290 1574 lacZalpha EU546820 6071 1613 1696 Plac EU546820 6071 1747 2603 derived derived from pBBR1 EU546820 6071 2604 3266 rep EU546820 6071 3547 4080 aacC1 EU546820 6071 4516 5319 URA3 EU546820 6071 5558 6071 CEN6/ARSH4 derived from Saccharomyces cerevisiae