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. 2023 Mar 20;14:1545. doi: 10.1038/s41467-023-37035-5

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — From left to right, peaks show monomers cleaved (blue semicircle) an uncleaved (red semicircle), dimers formed by cleaved (blue circles) or half-cleaved (blue-red circle) particles, trimers formed by two cleaved and one uncleaved particles (two thirds blue, one-third red circles) and tetramers formed by two cleaved and two uncleaved particles (two-quarters blue, two-quarters red). Minor peaks of other forms are described in supplementary materials. Graphs were plotted from individual native mass spectrometry experiments.