C François-Gerard

C Gerday

J G Beeley

Ovomucoid from the egg white of turtle-dove (Streptopelia risoria) was purified and shown to be a glycoprotein of mol. wt. 29 400, with valine as N-terminal residue. It is an inhibitor of both trypsin and chymotrypsin, but has a lower affinity for trypsin than has hen ovomucoid. Turtle-dove ovomucoid contains antigenic activity cross-reacting with the blood-group-P1 antigen of human erythrocytes. Hen ovomucoid has no detectable blood group-P1 activity. The carbohydrate composition of turtle-dove ovomucoid differs from hen ovomucoid in having substantially higher galactose content. The possible relationship between carbohydrate composition and antigenic activity is discussed.</jats:p

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Biochemical Journal

Turtle-dove ovomucoid, a glycoprotein proteinase inhibitor with P1-blood-group antigen activity

http://www.biochemj.org/content/ppbiochemj/177/2/679.full.pdf

Turtle-dove ovomucoid, a glycoprotein proteinase inhibitor with P1-blood-group antigen activity

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