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. 2022 Feb 14;8:63. doi: 10.1038/s41420-022-00861-5

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© The Author(s) 2022

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. 2 — A The number of differentially succinylated proteins or modification sites between the DR and IMH groups. Quantitative data with a p value < 0.05 and ratio >1.5 or <0.667 were considered differential succinylation. B Volcano plot of differentially succinylated modification sites between the DR and IMH groups. C Histogram of GO enrichment analyses based on the cellular component, molecular function and biological process categories of differentially succinylated proteins. D MS spectrum of the succinylated OPTN K108 site. E The K108 site is highly conserved in different species, ranging from mice to humans. DR diabetic retinopathy, IMH idiopathic macular hole, GO Gene Ontology, K lysine.