Abstract
The clathrin pathway is the principal route for receptor-mediated endocytosis and growth factor downregulation. Heterotetrameric clathrin adaptors directly link the clathrin coat with cargo transmembrane proteins that are sorted into coated pits and vesicles. A paper in this issue of Cell describes the atomic structure of the adaptor-protein 2 (AP-2) core, the portion that makes contacts with the membrane and cytosolic tails of cargo proteins.
MeSH terms
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Adaptor Proteins, Vesicular Transport
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Animals
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Carrier Proteins / metabolism*
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Cell Membrane / metabolism*
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Cell Membrane / ultrastructure
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Clathrin / metabolism*
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Endocytosis / physiology*
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Eukaryotic Cells / metabolism*
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Eukaryotic Cells / ultrastructure
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Humans
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Membrane Proteins / metabolism*
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Molecular Structure
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Protein Transport / physiology*
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Signal Transduction / physiology
Substances
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Adaptor Proteins, Vesicular Transport
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Carrier Proteins
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Clathrin
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Membrane Proteins