The complete genome sequence of severe acute respiratory syndrome coronavirus strain HKU-39849 (HK-39).

Article Details

Citation

Zeng FY, Chan CW, Chan MN, Chen JD, Chow KY, Hon CC, Hui KH, Li J, Li VY, Wang CY, Wang PY, Guan Y, Zheng B, Poon LL, Chan KH, Yuen KY, Peiris JS, Leung FC

The complete genome sequence of severe acute respiratory syndrome coronavirus strain HKU-39849 (HK-39).

Exp Biol Med (Maywood). 2003 Jul;228(7):866-73.

PubMed ID
12876307 [ View in PubMed
]
Abstract

The complete genomic nucleotide sequence (29.7kb) of a Hong Kong severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) strain HK-39 is determined. Phylogenetic analysis of the genomic sequence reveals it to be a distinct member of the Coronaviridae family. 5' RACE assay confirms the presence of at least six subgenomic transcripts all containing the predicted intergenic sequences. Five open reading frames (ORFs), namely ORF1a, 1b, S, M, and N, are found to be homologues to other CoV members, and three more unknown ORFs (X1, X2, and X3) are unparalleled in all other known CoV species. Optimal alignment and computer analysis of the homologous ORFs has predicted the characteristic structural and functional domains on the putative genes. The overall nucleotides conservation of the homologous ORFs is low (<5%) compared with other known CoVs, implying that HK-39 is a newly emergent SARS-CoV phylogenetically distant from other known members. SimPlot analysis supports this finding, and also suggests that this novel virus is not a product of a recent recombinant from any of the known characterized CoVs. Together, these results confirm that HK-39 is a novel and distinct member of the Coronaviridae family, with unknown origin. The completion of the genomic sequence of the virus will assist in tracing its origin.

DrugBank Data that Cites this Article

Polypeptides
NameUniProt ID
Replicase polyprotein 1abP0C6X7Details
Replicase polyprotein 1aP0C6U8Details