EU546818 5980 1243 1527 lacZalpha EU546818 5980 1545 1565 lacO EU546818 5980 1974 2194 R6K-gamma EU546818 5980 2653 3447 nptII EU546818 5980 3744 4118 rpsL EU546818 5980 4378 5181 URA3 EU546818 5980 5420 5933 CEN6/ARSH4 derived from Saccharomyces cerevisiae