Antiviral activity of the pregnancy recognition hormone ovine trophoblast protein-1.


Ovine trophoblast protein-1 (oTP-1) is an antiluteolytic protein which plays an important role in maternal recognition of pregnancy. It exhibits a 45-70% amino acid sequence homology with alpha interferons (IFN-alpha s) from various species. We show here that purified oTP-1 has high specific antiviral activity (2-3 X 10(8) units/mg protein) and is thus as… (More)


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