PMC:7352545 / 31565-32535 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7352545","sourcedb":"PMC","sourceid":"7352545","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7352545","text":"The first coronaviral HE proteins identified were from the porcine hemagglutinating encephalomyelitis virus (PHEV), BCoV and HCoV-OC43, which bear SA-9-O-acetylesterases similar to HEF [8]. Rat CoV (RCoV) has SA-4-O-acetylesterases, converting Neu4,5Ac2 to Neu5Ac [53,57,58]. Some murine CoVs prefer 4-O-Ac-SAs and others 9-O-Ac-SAs. HCoV-OC43 and BCoV prefer α2-6-SA 9-O-acetylation by their SA-O-acetyleseterases. The S glycoproteins of BCoV and HCoV-OC43 are Neu5,9Ac2-recognizing lectins and agglutinate murine, rat and chicken erythrocytes due to the enriched 9-O-Ac-SA species [52]. BCoV and HCoV-OC43 adapted to SA receptor determinants of 9-O-Ac-SA receptors [59]. For a second receptor, the binding of S glycoprotein to Neu5,9Ac2 receptor is essential for entry into cells. 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