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The Inkwell, Armstrong Atlantic State University

The Inkwell

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The George-Anne, Georgia Southern University

The George-Anne

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Regulation Of Na,K-Atpase By Plms, The Phospholemman-Like Protein From Shark: Molecular Cloning, Expression, Cellular Distribution And Functional Effects Of Plms, Yasser A. Mahmmoud, Gordon Cramb, Arvid B. Maunsbach, Christopher P. Cutler, Lara Meischke, Flemming Cornelius

Biology: Faculty Publications

In Na,K-ATPase membrane preparations from shark rectal glands, we have previously identified an FXYD domain-containing protein, phospholemman-like protein from shark, PLMS. This protein was shown to associate and modulate shark Na,K-ATPase activity in vitro. Here we describe the complete coding sequence, expression, and cellular localization of PLMS in the rectal gland of the shark Squalus acanthias. The mature protein contained 74 amino acids, including the N-terminal FXYD motif and a C-terminal protein kinase multisite phosphorylation motif. The sequence is preceded by a 20 amino acid candidate cleavable signal sequence. Immunogold labeling of the Na,K-ATPase …

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