NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.

AP-2 is the core-organizing element in clathrin-mediated endocytosis. During the formation of clathrin-coated vesicles, clathrin and endocytic accessory proteins interact with AP-2 in a temporally and spatially controlled manner, yet it remains elusive as to how these interactions are regulated. Her...

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Main Authors: Brigitte Ritter, Sebastian Murphy, Hatem Dokainish, Martine Girard, Manasa V Gudheti, Guennadi Kozlov, Marilene Halin, Jacynthe Philie, Erik M Jorgensen, Kalle Gehring, Peter S McPherson
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-10-01
Series:PLoS Biology
Online Access:http://europepmc.org/articles/PMC3794858?pdf=render
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author Brigitte Ritter
Sebastian Murphy
Hatem Dokainish
Martine Girard
Manasa V Gudheti
Guennadi Kozlov
Marilene Halin
Jacynthe Philie
Erik M Jorgensen
Kalle Gehring
Peter S McPherson
author_facet Brigitte Ritter
Sebastian Murphy
Hatem Dokainish
Martine Girard
Manasa V Gudheti
Guennadi Kozlov
Marilene Halin
Jacynthe Philie
Erik M Jorgensen
Kalle Gehring
Peter S McPherson
author_sort Brigitte Ritter
collection DOAJ
description AP-2 is the core-organizing element in clathrin-mediated endocytosis. During the formation of clathrin-coated vesicles, clathrin and endocytic accessory proteins interact with AP-2 in a temporally and spatially controlled manner, yet it remains elusive as to how these interactions are regulated. Here, we demonstrate that the endocytic protein NECAP 1, which binds to the α-ear of AP-2 through a C-terminal WxxF motif, uses an N-terminal PH-like domain to compete with clathrin for access to the AP-2 β2-linker, revealing a means to allow AP-2-mediated coordination of accessory protein recruitment and clathrin polymerization at sites of vesicle formation. Knockdown and functional rescue studies demonstrate that through these interactions, NECAP 1 and AP-2 cooperate to increase the probability of clathrin-coated vesicle formation and to control the number, size, and cargo content of the vesicles. Together, our data demonstrate that NECAP 1 modulates the AP-2 interactome and reveal a new layer of organizational control within the endocytic machinery.
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spelling doaj.art-83c6795f781d4dc4a2e30985492489652022-12-21T22:22:21ZengPublic Library of Science (PLoS)PLoS Biology1544-91731545-78852013-10-011110e100167010.1371/journal.pbio.1001670NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.Brigitte RitterSebastian MurphyHatem DokainishMartine GirardManasa V GudhetiGuennadi KozlovMarilene HalinJacynthe PhilieErik M JorgensenKalle GehringPeter S McPhersonAP-2 is the core-organizing element in clathrin-mediated endocytosis. During the formation of clathrin-coated vesicles, clathrin and endocytic accessory proteins interact with AP-2 in a temporally and spatially controlled manner, yet it remains elusive as to how these interactions are regulated. Here, we demonstrate that the endocytic protein NECAP 1, which binds to the α-ear of AP-2 through a C-terminal WxxF motif, uses an N-terminal PH-like domain to compete with clathrin for access to the AP-2 β2-linker, revealing a means to allow AP-2-mediated coordination of accessory protein recruitment and clathrin polymerization at sites of vesicle formation. Knockdown and functional rescue studies demonstrate that through these interactions, NECAP 1 and AP-2 cooperate to increase the probability of clathrin-coated vesicle formation and to control the number, size, and cargo content of the vesicles. Together, our data demonstrate that NECAP 1 modulates the AP-2 interactome and reveal a new layer of organizational control within the endocytic machinery.http://europepmc.org/articles/PMC3794858?pdf=render
spellingShingle Brigitte Ritter
Sebastian Murphy
Hatem Dokainish
Martine Girard
Manasa V Gudheti
Guennadi Kozlov
Marilene Halin
Jacynthe Philie
Erik M Jorgensen
Kalle Gehring
Peter S McPherson
NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.
PLoS Biology
title NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.
title_full NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.
title_fullStr NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.
title_full_unstemmed NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.
title_short NECAP 1 regulates AP-2 interactions to control vesicle size, number, and cargo during clathrin-mediated endocytosis.
title_sort necap 1 regulates ap 2 interactions to control vesicle size number and cargo during clathrin mediated endocytosis
url http://europepmc.org/articles/PMC3794858?pdf=render
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