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Jimpy Mice: Quantitation of Myelin‐Associated Glycoprotein and Other Proteins

Katsuhiko Yanagisawa, Richard H. Quarles

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Abstract

Myelin-associated glycoprotein (MAG), 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) activity, myelin basic protein (BP), and proteolipid protein (PLP) were quantitated in the brains of 20-day-old Jimpy and control mice. The levels of MAG, CNPase, and BP in Jimpy brains were 5.3%, 9.7%, and 1.9% of those in control brains, respectively. Immunoblotting analysis did not reveal an increased apparent Mr for MAG in the Jimpy mouse, as has been observed in some other hypomyelinating murine mutants. PLP was reduced more than the other proteins, as it was not detected by an immunoblotting technique that was capable of detecting 0.5% of the control level.

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What this paper is about

Myelin-associated glycoprotein (MAG), 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) activity, myelin basic protein (BP), and proteolipid protein (PLP) were quantitated in the brains of 20-day-old Jimpy and control mice. The levels of MAG, CNPase, and BP in Jimpy brains were 5.3%, 9.7%, and 1.9% of those in control brains, respectively. Immunoblotting analysis did not reveal an increased apparent Mr for MAG in the Jimpy mouse, as has been observed in some other hypomyelinating murine mutants. PLP was reduced more than the other proteins, as it was not detected by an immunoblotting technique that was capable of detecting 0.5% of the control level.

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Available abstract

Myelin-associated glycoprotein (MAG), 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) activity, myelin basic protein (BP), and proteolipid protein (PLP) were quantitated in the brains of 20-day-old Jimpy and control mice. The levels of MAG, CNPase, and BP in Jimpy brains were 5.3%, 9.7%, and 1.9% of those in control brains, respectively. Immunoblotting analysis did not reveal an increased apparent Mr for MAG in the Jimpy mouse, as has been observed in some other hypomyelinating murine mutants. PLP was reduced more than the other proteins, as it was not detected by an immunoblotting technique that was capable of detecting 0.5% of the control level.

Key concepts: Myelin-associated glycoprotein, Myelin, Proteolipid protein 1, Myelin proteolipid protein, Glycoprotein, Myelin basic protein, Biology, Mutant

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