EU546822 7785 1 804 URA3 EU546822 7785 1198 1231 loxP site EU546822 7785 1261 1570 oriV derived from pRO1600 EU546822 7785 1647 2480 rep EU546822 7785 2931 3317 lacZalpha EU546822 7785 3595 4524 araC EU546822 7785 4862 5735 low copy number origin derived from p15a EU546822 7785 5884 6417 aacC1 EU546822 7785 6776 7305 CEN6/ARSH4 derived from Saccharomyces cerevisiae