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U.S.A."],"published-print":{"date-parts":[[2023,11,7]]},"abstract":"<jats:p>\n                    Recognition that common human amyloidoses are prion diseases makes the use of the\n                    <jats:italic>Saccharomyces cerevisiae<\/jats:italic>\n                    prion model systems to screen for possible anti-prion components of increasing importance. [PSI+] and [URE3] are amyloid-based prions of Sup35p and Ure2p, respectively. Yeast has at least six anti-prion systems that together cure nearly all [PSI+] and [URE3] prions arising in their absence. We made a\n                    <jats:italic>GAL-<\/jats:italic>\n                    promoted bank of 14,913 human open reading frames in a yeast shuttle plasmid and isolated 20 genes whose expression cures [PSI+] or [URE3]. PRPF19 is an E3 ubiquitin ligase that cures [URE3] if its U-box is intact. DNAJA1 is a J protein that cures [PSI+] unless its interaction with Hsp70s is defective. Human Bag5 efficiently cures [URE3] and [PSI+]. Bag family proteins share a 110 to 130 residue \u201cBAG domain\u201d; Bag 1, 2, 3, 4, and 6 each have one BAG domain while Bag5 has five BAG domains. Two BAG domains are necessary for curing [PSI+], but one can suffice to cure [URE3]. Although most Bag proteins affect autophagy in mammalian cells, mutations blocking autophagy in yeast do not affect Bag5 curing of [PSI+] or [URE3]. Curing by Bag proteins depends on their interaction with Hsp70s, impairing their role, with Hsp104 and Sis1, in the amyloid filament cleavage necessary for prion propagation. Since Bag5 curing is reduced by overproduction of Sis1, we propose that Bag5 cures prions by blocking Sis1 access to Hsp70s in its role with Hsp104 in filament cleavage.\n                  <\/jats:p>","DOI":"10.1073\/pnas.2314781120","type":"journal-article","created":{"date-parts":[[2023,10,30]],"date-time":"2023-10-30T15:09:20Z","timestamp":1698678560000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":7,"title":["Human proteins curing yeast prions"],"prefix":"10.1073","volume":"120","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-6083-4821","authenticated-orcid":false,"given":"Songsong","family":"Wu","sequence":"first","affiliation":[{"name":"Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892-0830"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2708-2961","authenticated-orcid":false,"given":"Herman K.","family":"Edskes","sequence":"additional","affiliation":[{"name":"Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892-0830"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0273-8247","authenticated-orcid":false,"given":"Reed B.","family":"Wickner","sequence":"additional","affiliation":[{"name":"Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892-0830"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2023,10,30]]},"reference":[{"key":"e_1_3_4_1_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.7909170"},{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1128\/MMBR.00041-14"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1038\/hdy.1965.65"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.1128\/jb.106.2.519-522.1971"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1038\/sj.emboj.7600772"},{"key":"e_1_3_4_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/j.1460-2075.1996.tb00675.x"},{"key":"e_1_3_4_7_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.94.13.6618"},{"key":"e_1_3_4_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0092-8674(00)80264-0"},{"key":"e_1_3_4_9_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.96.4.1498"},{"key":"e_1_3_4_10_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.283.5406.1339"},{"key":"e_1_3_4_11_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature02391"},{"key":"e_1_3_4_12_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature02392"},{"key":"e_1_3_4_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0092-8674(01)00427-5"},{"key":"e_1_3_4_14_2","doi-asserted-by":"crossref","unstructured":"B. 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