Switching of Receptor Binding Poses between Closely Related Enteroviruses

Echoviruses, for which there are currently no approved vaccines or drugs, are responsible for a range of human diseases, for example echovirus 11 (E11) is a major cause of serious neonatal morbidity and mortality. Decay-accelerating factor (DAF, also known as CD55) is an attachment receptor for E11. Here, we report the structure of the complex of E11 and the full-length ectodomain of DAF (short consensus repeats, SCRs, 1-4) at 3.1 Å determined by cryo-electron microscopy (cryo-EM). SCRs 3 and 4 of DAF interact with E11 at the southern rim of the canyon via the VP2 EF and VP3 BC loops. We also observe an unexpected interaction between the N-linked glycan (residue 95 of DAF) and the VP2 BC loop of E11. DAF is a receptor for at least 20 enteroviruses and we classify its binding patterns from reported DAF/virus complexes into two distinct positions and orientations, named as E6 and E11 poses. Whilst 60 DAF molecules can attach to the virion in the E6 pose, no more than 30 can attach to E11 due to steric restrictions. Analysis of the distinct modes of interaction and structure and sequence-based phylogenies suggests that the two modes evolved independently, with the E6 mode likely found earlier.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Viruses - 14(2022), 12 vom: 24. Nov.

Sprache:

Englisch

Beteiligte Personen:

Zhou, Daming [VerfasserIn]
Qin, Ling [VerfasserIn]
Duyvesteyn, Helen M E [VerfasserIn]
Zhao, Yuguang [VerfasserIn]
Lin, Tzou-Yien [VerfasserIn]
Fry, Elizabeth E [VerfasserIn]
Ren, Jingshan [VerfasserIn]
Huang, Kuan-Ying A [VerfasserIn]
Stuart, David I [VerfasserIn]

Links:

Volltext

Themen:

Binding pose
CD55 Antigens
Complex
DAF
Echovirus E11
Enterovirus structure
Evolution
Glycan
Journal Article
Research Support, Non-U.S. Gov't
Virus receptor

Anmerkungen:

Date Completed 26.12.2022

Date Revised 20.03.2024

published: Electronic

Citation Status MEDLINE

doi:

10.3390/v14122625

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM350721513