Data	Original Paper	GEO Accession
HP1α (CBX5), HP1γ (CBX3), H3K9me3 in Human E1 ES cells	ENCODE Project Consortium. An integrated encyclopedia of DNA elements in the human genome. Nature 2012, 489, 57-74, [59]. http://www.roadmapepigenomics.org/ [60]	GSE101135 GSE123229 GSE95868 GSE16256
HP1α (CBX5), HP1β (CBX1), H3K9me3 in HEK293 cells	LeRoy, G.; Chepelev, I.; DiMaggio, P.A.; Blanco, M.A.; Zee, B.M.; Zhao, K.; Garcia B.A. Proteogenomic characterization and mapping of nucleosomes decoded by Brd and HP1 proteins. Genome Biol. 2012, 13, R68, PMID: 22,897,906 [61]. Hattori, T.; Lai, D.; Dementieva, I.S.; Montaño, S.P.; Kurosawa, K.; Zheng, Y.; Akin, L.R.; Świst-Rosowska, K.M.; Grzybowski, A.T.; Koide, A.; Krajewski, K.; Strahl, B.D.; Kelleher, N.L.; Ruthenburg, A.J.; Koide, S. Antigen clasping by two antigen-binding sites of an exceptionally specific antibody for histone methylation. Proc Natl Acad Sci U S A. 2016, 113, 2092-2097, doi:10.1073/pnas.1522691113 [62].	GSE39579 GSE66530
HP1α (CBX5), HP1β (CBX1), HP1γ (CBX3), H3K9me3 in murine ES cells	Ostapcuk, V.; Mohn, F.; Carl, S.H.; Basters, A.; Hess, D.; Iesmantavicius, V.; Lampersberger, L.; Flemr, M.; Pandey, A.; Thomä, N.H.; Betschinger, J.; Bühler M. Activity-dependent neuroprotective protein recruits HP1 and CHD4 to control lineage-specifying genes. Nature 2018, 557, 739-743, doi:10.1038/s41586-018-0153-8. [45].	GSE97945
HP1a and H3K9me3 in D. melanogaster	Klenov, M.S.; Lavrov, S.A.; Korbut, A.P.; Stolyarenko, A.D.; Yakushev, E.Y.; Reuter, M.; Pillai, R.S.; Gvozdev, V.A. Impact of nuclear Piwi elimination on chromatin state in Drosophila melanogaster ovaries. Nucleic Acids Res. 2014, 42, 6208-18. PMID: 24,782,529 [63].	GSE56347
Swi6HP1 and H3K9me3 in S. pombe	Iglesias, N.; Paulo, J.A.; Tatarakis, A.; Wang, X.; Edwards, A.L.; Bhanu, N.V.; Garcia, B.A.; Haas, W.; Gygi, S.P.; Moazed, D. Native Chromatin Proteomics Reveals a Role for Specific Nucleoporins in Heterochromatin Organization and Maintenance. Mol. Cell 2020, 77, 51-66.e8. PMID: 31,784,357 [64].	GSE125935