TABLE 1.

ARG1-lacZ expression in rad6, rad18, and ubr1 deletion strains

Strain	YPD medium		Minimal medium
	ARG1-lacZ expression	Null/WT ratio	ARG1-lacZ expression	Null/WT ratio
rad6Δ0	80	12	149	1.7
rad18Δ0	8.2	1.2	95	1.1
ubr1Δ0	21	3.1	154	1.7
ubr1Δ0 rad6Δ0	83	12	142	1.6
WTa	6.7		90

^aWT, wild type.