ArticleAmerican journal of physiology. Renal physiology2023
Intracellular sites of AQP2 S256 phosphorylation identified using inhibitors of the AQP2 recycling itinerary.
Article in American journal of physiology. Renal physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- GLUT9b- and ABCG2-mediated collecting duct urate transport uncovers a vasopressin-independent mechanism of renal water reabsorption.The Journal of clinical investigation · 2026Article
- Diurnal function and expression of aquaporins in the mouse kidney.American journal of physiology. Renal physiology · 2025Article
- Focal adhesion kinase inhibition induces membrane accumulation of aquaporin-2 in renal epithelial cells by actin depolymerization and endocytosis inhibition.American journal of physiology. Renal physiology · 2025Article
- Lysine acetylation of aquaporin-3 promotes water permeability but is not essential for urine concentrating ability.American journal of physiology. Renal physiology · 2025Article
- Ribosomal s6 kinase is a mediator of aquaporin-2 S256 phosphorylation and membrane accumulation after EGFR inhibition with erlotinib.American journal of physiology. Renal physiology · 2025Article
Corrections and comments
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Authors and funding
11 authors at 1 institution in 1 country.
Funding
Abstract
Vasopressin (VP)-regulated aquaporin-2 (AQP2) trafficking between cytoplasmic vesicles and the plasma membrane of kidney principal cells is essential for water homeostasis. VP affects AQP2 phosphorylation at several serine residues in the COOH-terminus; among them, serine 256 (S256) appears to be a major regulator of AQP2 trafficking. Mutation of this serine to aspartic acid, which mimics phosphorylation, induces constitutive membrane expression of AQP2. However, the intracellular location(s) at which S256 phosphorylation occurs remains elusive. Here, we used strategies to block AQP2 trafficking at different cellular locations in LLC-PK1 cells and monitored VP-stimulated phosphorylation of S256 at these sites by immunofluorescence and Western blot analysis with phospho-specific antibodies. Using methyl-β-cyclodextrin, cold block or bafilomycin, and taxol, we blocked AQP2 at the plasma membrane, in the perinuclear
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