Figure 5.
Polysome analysis. Strains bearing nop2 ts alleles and YBH3 were grown at 25°C, shifted to 37°C or maintained at 25°C and grown for 2 h. YBH23 (nop2-10) was also shifted to medium containing 3% formamide (+ FA) and grown for 2 h at 25°C. Cell extracts were layered onto 15–50% sucrose gradients, centrifuged and analyzed using absorbance at 254 nm. See panel O for positions of ribosome subunits (40S and 60S), monosomes (80S) and polysomes (2–6). H, halfmer 43S preinitiation complexes are labeled.