title: The kringle 4 domain of chicken plasminogen.
abstract: The kringle 4 unit of chicken plasminogen is similar to mammalian kringle 4 domains in possessing a lysine-binding site. Chicken kringle 4 shows 73-77% sequence identity with the fourth kringle units of porcine, bovine and human plasminogens. A major difference between mammalian and chicken kringle 4 species is that in the latter a glucosamine-based carbohydrate substituent is linked to asparagine-34. Complexation of this carbohydrate with concanavalin A does not interfere with the binding of kringle 4 to lysine-Sepharose, suggesting that in the kringle-fold the glycosylated region is distant from the entrance of the lysine-binding pocket.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002645:Chickens; D002846:Chromatography, Affinity; D006801:Humans; D006868:Hydrolysis; D010958:Plasminogen / Q000302:isolation & purification / Q000378:metabolism; D011487:Protein Conformation; D013045:Species Specificity; D013552:Swine
chemical_list: D010958:Plasminogen