Not complex suppressors of the srb4 temperature-sensitive mutant. Recessive mutations in NOT1, NOT3, NOT5, or CAF1 suppress srb4-138. Shown are growth phenotypes of SRB4 cells and cells containing the srb4-138 mutation, either alone or in conjunction with the not1-10, not3-10, not5-10, or caf1-10 mutation. Cells were spotted on YPD medium and incubated at 30 and 36°C for 2 days.