title: Hemoglobin transition in early development stages of the tadpole, Rana catesbeiana.
abstract: Five hemoglobin components (a, I, II, III and IV) were isolated from the hemolysates of the tadpole, Rana catesbeiana. Component a was monomeric molecule and the other four were tetrameric molecules. Component I predominating in younger tadpoles was replaced by component II during tadpole development. Electrophoretic and chemical analyses on the constituent globin chains revealed that component a was very similar to the alpha-chains of components I and II, ad that components I and II differed from one another in their beta chains.
mesh_terms: D000818:Animals; D004591:Electrophoresis, Polyacrylamide Gel; D006454:Hemoglobins / Q000378:metabolism*; D046911:Macromolecular Substances; D010446:Peptide Fragments / Q000032:analysis; D011892:Rana catesbeiana / Q000097:blood / Q000196:embryology* / Q000254:growth & development
chemical_list: D006454:Hemoglobins; D046911:Macromolecular Substances; D010446:Peptide Fragments