Related Experiment Videos
Luis Alberto Gómez1, Gladis Montoya, Hernán Mauricio Rivera
1Grupo de Fisiología Molecular, Subdirección de Investigación Científica y Tecnológica, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá, D.C., Colombia Departamento de Ciencias Fisiológicas, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, D.C., Colombia. lgomez@ins.gov.co.
Biomedica : Revista Del Instituto Nacional De Salud
|May 21, 2017
Summary
The Zika virus (ZIKV) envelope protein E shares structural similarities with rubella virus E1, suggesting conserved fusion mechanisms. This comparison aids in understanding ZIKV neurotropism and developing strategies for neurological complications.
Area of Science:
- Virology
- Structural Biology
- Neuroscience
Background:
- Zika virus (ZIKV) is an enveloped flavivirus transmitted by Aedes mosquitoes.
- ZIKV infection is linked to neurotropism, causing conditions like Guillain-Barré syndrome and congenital abnormalities.
- Congenital Zika syndrome shares similarities with rubella virus (RV) infection.
Purpose of the Study:
- To compare the molecular structures of ZIKV envelope protein E (E-ZIKV) and rubella virus E1 (E1-RV).
- To explore potential implications for ZIKV neurotropism and associated nervous system disorders.
Main Methods:
- Amino acid sequences of E-ZIKV (PDB: 5iZ7) and E1-RV (PDB: 4ADG) were aligned.
- Secondary structure elements were analyzed using Vector NTI Advance®, DSSP, and POSA.
- Structural equivalency and >70% identity were key comparison criteria.
Main Results:
- E-ZIKV and E1-RV structures showed 70-80% identity, consistent with Class II fusion proteins.
- Highly conserved fusion elements were identified in the distal domain II of both proteins.
- These elements are associated with cellular receptor binding: MOG for RV and Axl for ZIKV.
Conclusions:
- Structural comparison of E-ZIKV and E1-RV is crucial for identifying ZIKV neurotropism factors.
- Findings contribute to understanding ZIKV pathogenesis.
- This research may inform diagnostic, preventive, and therapeutic strategies for ZIKV-induced neurological complications.