title: Comparison of carbonic anhydrase activity and other haematological values of two Eutherian and three Australian marsupial mammals.
abstract: 1. Carbonic anhydrase activity and 2,3-diphosphoglycerate (2,3-DPG) concentration were determined in whole blood from humans (Homo sapiens), rabbits (Oryctolagus cuniculus), eastern grey kangaroos (Macropus giganteus), pademelons (Thylogale billardierii) and brush-tailed possums (Trichosurus vulpecula). 2. Marsupial blood carbonic anhydrase activity increased as species body size decreased. 3. T. billardierii haemoglobin was found to have a polymorphism which may be the same (beta 2 = histidine or glutamine) as that of M. giganteus. 4. The concentration of 2,3-DPG int e red cells of T. billardierii was approximately equal to that of the haemoglobin tetramer. Levels of 2,3-DPG in the other species were similar to those previously reported.
mesh_terms: D019794:2,3-Diphosphoglycerate; D000818:Animals; D001835:Body Weight; D002256:Carbonic Anhydrases / Q000097:blood / Q000378:metabolism*; D004163:Diphosphoglyceric Acids / Q000097:blood; D004912:Erythrocytes / Q000201:enzymology; D006400:Hematocrit / Q000662:veterinary; D006454:Hemoglobins / Q000032:analysis / Q000235:genetics; D006801:Humans; D007614:Macropodidae / Q000097:blood*; D008394:Marsupialia / Q000097:blood*; D009893:Opossums / Q000097:blood; D011110:Polymorphism, Genetic; D011817:Rabbits / Q000097:blood
chemical_list: D004163:Diphosphoglyceric Acids; D006454:Hemoglobins; D019794:2,3-Diphosphoglycerate; D002256:Carbonic Anhydrases