Abstract
The receptors for the hemagglutinating encephalomyelitis virus (HEV, a porcine coronavirus) on chicken erythrocytes were analyzed and compared to the receptors for bovine coronavirus (BCV) and influenza C virus. Evidence was obtained that HEV requires the presence of N-acetyl-9-O-acetylneuraminic acid (Neu5,9Ac2) on the cell surface for agglutination of erythrocytes as has been previously shown for BCV and influenza C virus: (i) Incubation of red blood cells with sialate 9-O-acetylesterase, the receptor-destroying enzyme of influenza C virus, rendered the erythrocytes resistant against agglutination by each of the three viruses; (ii) Human erythrocytes which are resistant to agglutination by HEV acquire receptors for HEV after resialylation with Neu5,9Ac2. Sialylation of red blood cells with limiting amounts of sialic acid indicated that strain JHB/1/66 of influenza C virus requires less Neu5,9Ac2 for agglutination of erythrocytes than the two coronaviruses, both of which were found to be similar in their reactivity with Neu5,9Ac2-containing receptors.
MeSH Terms
Acetylesterase
Animals
Carboxylic Ester Hydrolases/pharmacology
Cells, Cultured
Coronaviridae/drug effects,metabolism
Erythrocytes/drug effects,metabolism
Hemagglutination, Viral
Humans
Influenzavirus C/metabolism
Orthomyxoviridae/metabolism
Receptors, Virus/drug effects,metabolism
Sialic Acids/metabolism
Chemicals
Receptors, Virus
Sialic Acids
9-O-acetyl-N-acetylneuraminic acid
Carboxylic Ester Hydrolases
Acetylesterase
sialate O-acetylesterase
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Schultze B
Institut für Virologie, Philipps-Universität Marburg, F.R.G.
Gross H J
Brossmer R
Klenk H D
Herrler G
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