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Embecovirus
Subgenus of viruses From Wikipedia, the free encyclopedia
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Embecovirus is a subgenus of coronaviruses in the genus Betacoronavirus.[1] The viruses in this subgenus, unlike other coronaviruses, have a hemagglutinin esterase (HE) gene.[2] The viruses in the subgenus were previously known as group 2a coronaviruses.[3][4]
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Taxonomy
The subgenus contains the following species, listed by scientific name and followed by the exemplar virus of the species:[5][6]
- Betacoronavirus gravedinis, Human coronavirus OC43
- Betacoronavirus hongkongense, Human coronavirus HKU1
- Betacoronavirus muris, Murine hepatitis virus
- Betacoronavirus myodae, Myodes rufocanus vole coronavirus 2/JL2014
- Betacoronavirus ratti, Betacoronavirus HKU24
Structure
The viruses of this subgenus, like other coronaviruses, have a lipid bilayer envelope in which the membrane (M), envelope (E) and spike (S) structural proteins are anchored.[7] Unlike other coronaviruses, viruses in this subgenus also have an additional shorter spike-like structural protein called hemagglutinin esterase (HE).[2][8]
Recombination
Genetic recombination can occur when two or more viral genomes are present in the same host cell. The dromedary camel beta-coronavirus (Beta-CoV HKU23) exhibits genetic diversity in the African camel population.[9] Contributing to this diversity are several recombination events that had taken place in the past between closely related Beta-CoVs of the subgenus Embecovirus.[9]
See also
- Sarbecovirus (group 2b)
- Merbecovirus (group 2c)
- Nobecovirus (group 2d)
References
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