{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T18:51:09Z","timestamp":1781808669984,"version":"3.54.5"},"update-to":[{"DOI":"10.1371\/journal.ppat.1014344","type":"new_version","label":"New version","source":"publisher","updated":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T00:00:00Z","timestamp":1781740800000}}],"reference-count":59,"publisher":"Public Library of Science (PLoS)","issue":"6","license":[{"start":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T00:00:00Z","timestamp":1781136000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R01 AI179566"],"award-info":[{"award-number":["R01 AI179566"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["1T32GM145470"],"award-info":[{"award-number":["1T32GM145470"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plospathogens.org"],"crossmark-restriction":false},"short-container-title":["PLoS Pathog"],"abstract":"<jats:p>Many DNA viruses including polyomaviruses (PyVs) enter the host nucleus to cause infection, although how this is accomplished is unclear. To infect cells, the prototype PyV SV40 targets to the Nesprin-2 outer nuclear membrane protein and enters the nucleus via the nuclear pore complex (NPC). Host factors that function with Nesprin-2 to target SV40 to the nuclear membrane and drive NPC-dependent nuclear entry are unknown. Here we demonstrate that the SUN1 inner nuclear membrane protein acts coordinately with its binding-partner Nesprin-2 to target cytosol-localized SV40 to the nuclear membrane. Strikingly, despite localizing to the perinuclear space, the SUN domain of SUN1 plays a crucial role in Nesprin-2-dependent recruitment of cytosolic SV40. After targeting, SV40 binds to the NPC-associated importin receptor KPNA4, which translocates the virus into the nucleus. Our results reveal how a DNA virus exploits the Nesprin-2-SUN1-KPNA4 axis for stepwise targeting and entry into the nucleus to cause infection.<\/jats:p>","DOI":"10.1371\/journal.ppat.1014344","type":"journal-article","created":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T17:39:27Z","timestamp":1781199567000},"page":"e1014344","update-policy":"https:\/\/doi.org\/10.1371\/journal.ppat.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["SV40 exploits the Nesprin-2-SUN1-KPNA4 axis for stepwise targeting and entry into the host nucleus to promote 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