Changes in serum lipoproteins during metamorphosis of the bullfrog,Rana catesbeiana |
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Authors: | Hiroshi Nagano Ryoiti Shukuya Norio Suzuki Nobuo Ueta |
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Affiliation: | Department of Biochemistry, Nippon Medical School, Sendagi, Bunkyoku, Tokyo 113, Japan;Department of Biochemistry, Teikyo University School of Medicine, Kaga, Itabashiku, Tokyo 173, Japan |
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Abstract: | Serum lipoproteins of the bullfrog, Rana catesbeiana, were studied during metamorphosis. Adult bullfrog has essentially one lipoprotein, designated β-lipoprotein. This β-lipoprotein migrates during electrophoresis to β-globulin region and it has a low hydrated density such that it exhibits floatation in a solvent of density 1.063. On the other hand, tadpole serum has one more lipoprotein, designated as α-lipoprotein, in addition to the β-lipoprotein. The α-lipoprotein migrates to the α-globulin region in zone electrophoresis and corresponds to the so called high density lipoprotein judging from ultracentrifugal behavior. Serum α-lipoprotein disappears and β-lipoprotein content decreases during metamorphosis. |
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