TY - JOUR
T1 - ER-export and ARFRP1/AP-1-dependent delivery of SARS-CoV-2 Envelope to lysosomes controls late stages of viral replication
AU - Pearson, Guy
AU - Mears, Harriet
AU - Broncel, Malgorzata
AU - Snijders, Ambrosius P.
AU - Bauer, David
AU - Carlton, Jeremy
N1 - Article is accepted in principle and under technical hold to allow APC payment. I've put a month-long embargo on the files, but will remove this and release it when we get final acceptance as this is OA through a CCBY license with the relevant RRS applied
PY - 2024/4/3
Y1 - 2024/4/3
N2 - The β-coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of the global COVID-19 pandemic. Coronaviral Envelope (E) proteins are pentameric viroporins that play essential roles in assembly, release, and pathogenesis. We developed a nondisruptive tagging strategy for SARS-CoV-2 E and find that, at steady state, it localizes to the Golgi and to lysosomes. We identify sequences in E, conserved across Coronaviridae, responsible for endoplasmic reticulum–to–Golgi export, and relate this activity to interaction with COP-II via SEC24. Using proximity biotinylation, we identify an ADP ribosylation factor 1/adaptor protein–1 (ARFRP1/ AP-1)–dependent pathway allowing Golgi-to-lysosome trafficking of E. We identify sequences in E that bind AP-1, are conserved across β-coronaviruses, and allow E to be trafficked from Golgi to lysosomes. We show that E acts to deacidify lysosomes and, by developing a trans-complementation assay for SARS-CoV-2 structural proteins, that lysosomal delivery of E and its viroporin activity is necessary for efficient viral replication and release.
AB - The β-coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of the global COVID-19 pandemic. Coronaviral Envelope (E) proteins are pentameric viroporins that play essential roles in assembly, release, and pathogenesis. We developed a nondisruptive tagging strategy for SARS-CoV-2 E and find that, at steady state, it localizes to the Golgi and to lysosomes. We identify sequences in E, conserved across Coronaviridae, responsible for endoplasmic reticulum–to–Golgi export, and relate this activity to interaction with COP-II via SEC24. Using proximity biotinylation, we identify an ADP ribosylation factor 1/adaptor protein–1 (ARFRP1/ AP-1)–dependent pathway allowing Golgi-to-lysosome trafficking of E. We identify sequences in E that bind AP-1, are conserved across β-coronaviruses, and allow E to be trafficked from Golgi to lysosomes. We show that E acts to deacidify lysosomes and, by developing a trans-complementation assay for SARS-CoV-2 structural proteins, that lysosomal delivery of E and its viroporin activity is necessary for efficient viral replication and release.
UR - http://www.scopus.com/inward/record.url?scp=85190076906&partnerID=8YFLogxK
U2 - 10.1126/sciadv.adl5012
DO - 10.1126/sciadv.adl5012
M3 - Article
SN - 2375-2548
VL - 10
JO - Science Advances
JF - Science Advances
IS - 14
M1 - eadl5012
ER -