Bovine Histidine-Rich Glycoprotein is a Substrate for Bovine Plasma Factor XIIIa

Abstract Histidine-rich glycoprotein was purified from bovine plasma and the identity of the protein confirmed through amino acid sequencing. Activated bovine factor XIIIa catalyzed the incorporation of 1 nmol of 1,4-[ 14 C]putrescine into 1 nmol of bovine histidine-rich glycoprotein, showing that histidine-rich glycoprotein has the ability to participate in transglutaminase-catalyzed reactions in vivo .