Embecovirus | |
---|---|
Phân loại virus | |
(kph): | Virus |
Vực: | Riboviria |
Ngành: | incertae sedis |
Bộ: | Nidovirales |
Họ: | Coronaviridae |
Chi: | Betacoronavirus |
Phân chi: | Embecovirus |
Species[1] | |
Embecovirus là một phân chi của coronavirus trong chi Betacoronavirus.[2] Các virut trong phân chi này, không giống như các coronavirus khác, có gen hemagglutinin esterase (HE).[3] Các virut trong thế hệ con trước đây được gọi là coronavirus nhóm 2a.[4][5]
In all members of Betacoronavirus subgroup A, a haemagglutinin esterase (HE) gene, which encodes a glycoprotein with neuraminate O-acetyl-esterase activity and the active site FGDS, is present downstream to ORF1ab and upstream to S gene (Figure 1).
See figure 2.
CoVs are classified into four genera, Alphacoronavirus, Betacoronavirus, Gammacoronavirus and Deltacoronavirus. Within Betacoronavirus, they can be further subclassified into lineages A, B, C and D [1]. In 2018, these four lineages were reclassified as subgenera of Betacoronavirus, and renamed as Embecovirus (previous lineage A), Sarbecovirus (previous lineage B), Merbecovirus (previous lineage C) and Nobecovirus (previous lineage D) [2]. In addition, a fifth subgenus, Hibecovirus, was also included (Figure 1) [2].