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. 2022 Nov 2;50(20):11924–11937. doi: 10.1093/nar/gkac961

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© The Author(s) 2022. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — The 40S head is highly flexible in the early nucleoplasmic Tsr1 state particle. (A) SDS-PAGE analysis of the yeast pre-40S intermediates purified using Slx9–Dim1 split-tag; ribosome assembly factors identified by mass spectrometry are indicated. (B) Two views of the molecular model of the yeast state Tsr1-1 (with uS5). The highly flexible 40S head is indicated using the density map. (C) The central pseudoknot (h2 of the 18S rRNA) formed in yeast state Tsr1-1.