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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Mol Cell. 2021 Mar 12;81(7):1372–1383. doi: 10.1016/j.molcel.2021.02.022

Figure 1:

Figure 1:

Model for mRNA decay on nonoptimal mRNA. The N-terminus of Not5 recognizes an empty E site on a slowly elongating ribosome. By recruiting CCR4-NOT, Not5 signals canonical Xrn1-mediated mRNA decay.