The ASCC accumulates on UVB- and 4NQO-stalled ribosomes
(A) Harringtonine run-off assays to measure the rate of polysome loss in HeLa cells treated with 4NQO or UVB. Error bars represent the SD. ∗∗p < 0.01, ∗∗∗p < 0.001.
(B) Micrococcal nuclease assay to measure ribosome collisions in HeLa cells treated with 2-μM emetine (low), 0.2-μM anisomycin (low), 300-μM emetine (high), 75-μM anisomycin (high), 4NQO, or UVB for 15 min.
(C) Distribution of the ASCC proteins after SDGC of lysates prepared from control or 4NQO-treated cells.
(D and E) ASCC3 distribution after SDGC of lysates prepared from cells exposed to 4NQO. Lysates were treated with EDTA (+EDTA) in (D) or MNase (+MNase) in (E).
See also Figure S2.