Receptor for canine distemper virus (CDV)?

[Hans Engkvist]

Dear Virologists,
I need to know what is the host cell receptor for the canine distemper
virus (CDV).
I know that the mode of entry for the CDV is that the haemagglutinin (HA)
attaches to the receptor and the fusion protein is responsible for the
fusion of the viral and plasmamembranes. But, which receptor for the HA
protein?
This is perhaps not known?

TIA for any crumbs of help or insight,
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Hans E.S. Engkvist            phone : +46 18 17 4487, 17 4151
Dept. of Medical Genetics     fax   : +46 18 526849
Biomedical Center (BMC)       phone : +46 18 553613 (home) 
Box 589, S-751 23 Uppsala     e-mail: hans.engkvist at medgen.uu.se
Sweden                       
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