Abstract
The metal-dependent protein phosphatase family (PPM) governs a number of signaling pathways. PPM1L, originally identified as a negative regulator of stress-activated protein kinase signaling, was recently shown to be involved in the regulation of ceramide trafficking at ER-Golgi membrane contact sites. Here, we identified acyl-CoA binding domain containing 3 (ACBD3) as an interacting partner of PPM1L. We showed that this association, which recruits PPM1L to ER-Golgi membrane contact sites, is mediated by a GOLD (Golgi dynamics) domain in ACBD3. These results suggested that ACBD3 plays a pivotal role in ceramide transport regulation at the ER-Golgi interface.
Copyright © 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adaptor Proteins, Signal Transducing / chemistry
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Adaptor Proteins, Signal Transducing / genetics
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Adaptor Proteins, Signal Transducing / metabolism*
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Binding Sites
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Endoplasmic Reticulum / metabolism*
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Golgi Apparatus / metabolism*
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HEK293 Cells
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HeLa Cells
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Humans
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Membrane Proteins / chemistry
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Membrane Proteins / genetics
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Membrane Proteins / metabolism*
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Models, Biological
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Models, Molecular
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Phosphoprotein Phosphatases / chemistry
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Phosphoprotein Phosphatases / genetics
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Phosphoprotein Phosphatases / metabolism*
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Protein Interaction Domains and Motifs
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Protein Serine-Threonine Kinases / chemistry
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Protein Serine-Threonine Kinases / genetics
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Protein Serine-Threonine Kinases / metabolism
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Protein Transport
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Recombinant Fusion Proteins / chemistry
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Recombinant Fusion Proteins / genetics
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Recombinant Fusion Proteins / metabolism
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Signal Transduction
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Two-Hybrid System Techniques
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Vesicular Transport Proteins / chemistry
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Vesicular Transport Proteins / genetics
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Vesicular Transport Proteins / metabolism
Substances
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ACBD3 protein, human
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Adaptor Proteins, Signal Transducing
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Membrane Proteins
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Recombinant Fusion Proteins
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VAPA protein, human
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Vesicular Transport Proteins
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CERT1 protein, human
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Protein Serine-Threonine Kinases
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PPM1L protein, human
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Phosphoprotein Phosphatases