title: gamma-Carboxyglutamic acid distribution.
abstract: The distribution of the vitamin K-dependent amino acid, gamma-carboxyglutamic acid was examined in proteins from a variety of sources. Proteins examined include purified rat and bovine coagulation proteins, barium citrate-adsorbing proteins from trout plasma, lamprey plasma, earthworm hemolymph, army worm hemolymph, lobster hemolymph, E. coli B/5, soybean leaf, the protein lysate from the hemolymph cell of the horseshoe crab and parathyroid extract. Other purified proteins examined included human alpha-1-antitrypsin, pepsinogen, S-100, fetuin, tropomyosin-troponin and complement protein C-3. Of these, only the blood-cotting proteins and the vertebrate plasma samples were shown to contain gamma-carboxyglutamic acid.
mesh_terms: D000818:Animals; D001798:Blood Proteins / Q000032:analysis; D002417:Cattle; D003176:Complement C3 / Q000032:analysis; D005170:Factor X / Q000032:analysis; D005971:Glutamates / Q000032:analysis*; D006458:Hemolymph / Q000032:analysis; D007798:Lampreys; D011506:Proteins / Q000032:analysis*; D011516:Prothrombin / Q000032:analysis; D051381:Rats; D014337:Trout
chemical_list: D001798:Blood Proteins; D003176:Complement C3; D005971:Glutamates; D011506:Proteins; D011516:Prothrombin; D005170:Factor X