Complete genome sequence of bat coronavirus HKU2 from Chinese horseshoe bats revealed a much smaller spike gene with a different evolutionary lineage from the rest of the genome

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Material Information

Title:
Complete genome sequence of bat coronavirus HKU2 from Chinese horseshoe bats revealed a much smaller spike gene with a different evolutionary lineage from the rest of the genome
Series Title:
Virology
Creator:
Lau, Susanna K. P.
Woo, Patrick C. Y.
Li, Kenneth S. M.
Huang, Yi
Wang, Ming
Lam, Carol S. D.
Xu, Huifang
Guo, Rongtong
Chan, Kwok-hung
Zheng, Bo-jian
Yuen, Kwok-yung
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Chinese Horseshoe Bats ( local )
Coronavirus ( local )
Hku2 ( local )
Sars ( local )
Novel ( local )
Receptor ( local )
Origin ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Apart from bat-SARS-CoV, we have identified a novel group 1 coronavirus, bat-CoV HKU2, in Rhinolophus sinicus (Chinese horseshoe bats). Since it has been suggested that the receptor-binding motif (RBM) of SARS-CoV may have been acquired from a group 1 coronavirus, we conducted a surveillance study and identified bat-SARS-CoV and bat-CoV HKU2 in 8.7% and 7.5% respectively of R. sinicus in Hong Kong and Guangdong. Complete genome sequencing of four strains of bat-CoV HKU2 revealed the smallest coronavirus genome (27164 nucleotides) and a unique spike protein evolutionarily distinct from the rest of the genome. This spike protein, sharing similar deletions with other group 2 coronaviruses in its C-terminus, also contained a 15-amino acid peptide homologous to a corresponding peptide within the RBM of spike protein of SARS-CoV, which was absent in other coronaviruses except bat-SARS-CoV. These suggest a common evolutionary origin in the spike protein of bat-CoV HKU2, bat-SARS-CoV, and SARS-CoV.
Original Version:
Virology, Vol. 367, no. 3 (2007-10-25).

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