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. 2018 Oct 12;9:4225. doi: 10.1038/s41467-018-06455-z

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© The Author(s) 2018

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. 5 — POH1 negatively modifies K63-linked polyubiquitination of pro-IL-1β. a BMDMs stimulated with LPS for the indicated time periods were immunoprecipitated (IP) with an anti-POH1 or control IgG antibody and immunoblotted (IB) with the indicated antibodies. b HEK293T cells transfected with His-POH1 and either Flag-NLRP3, Flag-caspase-1 or Flag-ASC were subjected to IP with an anti-Flag antibody and IB with an anti-His antibody. c The lysates of HEK293T cells expressing Flag-POH1 and His-pro-IL-1β were IP with an anti-Flag antibody and IB with an anti-His antibody in cell lysates. d HEK293T cells transfected with Vsv-ASC, V5-tagged pro-caspase-1, HA-tagged K48-only or K63-only Ub and His-tagged pro-IL-1β, along with or without Flag-tagged POH1, were subjected to IP with an anti-V5 antibody or anti-His antibody and then IB with the indicated antibodies. e Poh1^Δ/+ and Poh1^Δ/Δ BMDMs treated as indicated were subjected to IP with an anti-pro-IL-1β antibody and IB with the indicated antibodies. f HEK293T cells were transfected with Flag-caspase-1, Vsv-ASC, His-pro-IL-1β, Flag-POH1 (WT) or Flag-H113Q-POH1, along with HA-tagged K63-only Ub, then cells were subjected to IP with an anti-His or control IgG antibody and IB with the indicated antibodies. Similar results were obtained from three independent experiments