Details der Publikation - ANXA2 Facilitates Enterovirus 71 Infection by Interacting with 3D Polymerase and PI4KB to Assist the Assembly of Replication Organelles

ANXA2 Facilitates Enterovirus 71 Infection by Interacting with 3D Polymerase and PI4KB to Assist the Assembly of Replication Organelles

Abstract Similar to that of other enteroviruses, the replication of enterovirus 71 (EV71) occurs on rearranged membranous structures called replication organelles (ROs). Phosphatidylinositol 4-kinase III (PI4KB), which is required by enteroviruses for RO formation, yields phosphatidylinositol-4-phosphate (PI4P) on ROs. PI4P then binds and induces conformational changes in the RNA-dependent RNA polymerase (RdRp) to modulate RdRp activity. Here, we targeted 3D polymerase, the core enzyme of EV71 ROs, and found that the host factor Annexin A2 (ANXA2) can interact with 3D polymerase and promote the replication of EV71. Then, an experiment showed that the annexin domain of ANXA2, which possesses membrane-binding capacity, mediates the interaction of ANXA2 with EV71 3D polymerase. Further research showed that ANXA2 is localized on ROs and interacts with PI4KB. Overexpression of ANXA2 stimulated the formation of PI4P, and the level of PI4P was decreased in ANXA2-knockout cells. Furthermore, ANXA2, PI4KB, and 3D were shown to be localized to the viral RNA replication site, where they form a higher-order protein complex, and the presence of ANXA2 promoted the PI4KB-3D interaction. Altogether, our data provide new insight into the role of ANXA2 in facilitating formation of the EV71 RNA replication complex..

Medienart:	E-Artikel

Erscheinungsjahr:	2021
Erschienen:	2021

Enthalten in:	Zur Gesamtaufnahme - volume:36
Enthalten in:	Virologica Sinica - 36(2021), 6 vom: 01. Juli, Seite 1387-1399

Sprache:	Englisch

Beteiligte Personen:	Zhang, Qiuhan [VerfasserIn] Li, Siliang [VerfasserIn] Lei, Ping [VerfasserIn] Li, Zixian [VerfasserIn] Chen, Feifei [VerfasserIn] Chen, Qi [VerfasserIn] Wang, Yulu [VerfasserIn] Gong, Jiami [VerfasserIn] Tang, Qi [VerfasserIn] Liu, Xinjin [VerfasserIn] Lan, Ke [VerfasserIn] Wu, Shuwen [VerfasserIn]

Links:	Volltext [lizenzpflichtig]

Themen:	3D polymerase Annexin A2 (ANXA2) Enterovirus 71 (EV71) Phosphatidylinositol 4-kinase III (PI4KB)

Anmerkungen:	© Wuhan Institute of Virology, CAS 2021

doi:	10.1007/s12250-021-00417-4

funding:
Förderinstitution / Projekttitel:

PPN (Katalog-ID):	OLC2128851068

Internformat


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520			\|a Abstract Similar to that of other enteroviruses, the replication of enterovirus 71 (EV71) occurs on rearranged membranous structures called replication organelles (ROs). Phosphatidylinositol 4-kinase III (PI4KB), which is required by enteroviruses for RO formation, yields phosphatidylinositol-4-phosphate (PI4P) on ROs. PI4P then binds and induces conformational changes in the RNA-dependent RNA polymerase (RdRp) to modulate RdRp activity. Here, we targeted 3D polymerase, the core enzyme of EV71 ROs, and found that the host factor Annexin A2 (ANXA2) can interact with 3D polymerase and promote the replication of EV71. Then, an experiment showed that the annexin domain of ANXA2, which possesses membrane-binding capacity, mediates the interaction of ANXA2 with EV71 3D polymerase. Further research showed that ANXA2 is localized on ROs and interacts with PI4KB. Overexpression of ANXA2 stimulated the formation of PI4P, and the level of PI4P was decreased in ANXA2-knockout cells. Furthermore, ANXA2, PI4KB, and 3D were shown to be localized to the viral RNA replication site, where they form a higher-order protein complex, and the presence of ANXA2 promoted the PI4KB-3D interaction. Altogether, our data provide new insight into the role of ANXA2 in facilitating formation of the EV71 RNA replication complex.
650		4	\|a Enterovirus 71 (EV71)
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912			\|a GBV_ILN_151
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912			\|a GBV_ILN_171
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912			\|a GBV_ILN_2048
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912			\|a GBV_ILN_2112
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912			\|a GBV_ILN_2129
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ANXA2 Facilitates Enterovirus 71 Infection by Interacting with 3D Polymerase and PI4KB to Assist the Assembly of Replication Organelles

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