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The Calmodulin Antagonist, W-13, Alters Transcytosis, Recycling, and the Morphology of the Endocytic Pathway in Madin-Darby Canine Kidney Cells

The Calmodulin Antagonist, W-13, Alters Transcytosis, Recycling, and the Morphology of the Endocytic Pathway in Madin-Darby Canine Kidney Cells

G Apodaca, C Enrich, K E Mostov

J Biol Chem. 1994 Jul 22;269(29):19005-13.

PMID: 7913467

Abstract:

The effect of the calmodulin antagonist N-(4-aminobutyl)-5-chloro-2-naphthalenesulfonamide (W-13) on the endosomal system of Madin-Darby canine kidney cells was assessed. W-13 inhibited receptor-mediated IgA transcytosis, recycling of transferrin, and caused all material endocytosed from both surfaces of the cell to be delivered to exceptionally large, novel endosomal structures, which appear to be derived from early endosomes. Treatment with other calmodulin antagonists similarly inhibited transcytosis and caused large endosomes to form. These observations raise the possibility that calmodulin may be involved in regulating membrane trafficking through the endosomes of polarized epithelial cells.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP88519577-A	W-13		88519-57-7	Price

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