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Evidence on differential role for alpha 1 and alpha 2 subtypes of AP-2 adaptin in the central nervous system by P. Capella; J. Asensio; M. Troncoso; M.A. Sosa; A.M. Seltzer is a Neuroscience article available to read on EtoBox.

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Two subtypes of alpha (α)subunits, α1and α2, belonging to AP-2 complex have been described in the central nervous system (CNS). The specific role of each subtype is still unclear. In this study, we evaluated the expression and interaction with cell membranes of both subtypes in the postnatal developing cerebral cortex and cerebellum in two rat strains that display distinct developmental features. We observed that α2 displays higher variations than α1 during development, and at lesser extent in the rats with delayed rate of development. Additionally, by in vitro binding assays we evaluated the interaction of α subunits with bovine brain membranes. Both subtypes displayed clear differences in their performance, maximum binding of α1 was higher and α2 reached it faster than α1. In addition, both subtypes displayed different binding to membranes when bivalent cations or nucleotides were added. We conclude that both subtypes interact differently with membranes and that they may play different roles in clathrin-mediated endocytosis in the CNS.

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Author

P. Capella; J. Asensio; M. Troncoso; M.A. Sosa; A.M. Seltzer

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Neuroscience (Life Sciences)