title: The similarity of histones from turtle erythrocytes and liver.
abstract: Using the fresh-water "red-eared turtle" Pseudomys scriptans elegans, we have confirmed the existence of a minor component H1s among the lysine-rich histones of turtle erythrocytes by three forms of gel electrophoresis and two forms of chromatography. It was separated from the major components by both cation-exchange chromatography and molecular-exclusion chromatography and shown to differ slightly but significantly in content of several amino acids as well as being shorter than the other lysine-rich histones. Although its composition is close to that of the "tissue-specific" F1b of sea turtle erythrocytes, it is present in even greater relative amount in red-eared turtle livers. In most respects it resembles the satellite histone H10 of mammalian tissues. No unusual histones were observed among the perchloric acid insoluble histones of turtle erythrocytes.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D004591:Electrophoresis, Polyacrylamide Gel; D004912:Erythrocytes / Q000032:analysis*; D006657:Histones / Q000032:analysis* / Q000097:blood; D008099:Liver / Q000032:analysis*; D009928:Organ Specificity; D013045:Species Specificity; D014426:Turtles
chemical_list: D000596:Amino Acids; D006657:Histones