ArticleThe Journal of biological chemistry2013
The Sec7 guanine nucleotide exchange factor GBF1 regulates membrane recruitment of BIG1 and BIG2 guanine nucleotide exchange factors to the trans-Golgi network (TGN).
Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.
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Who cites it
52 citing papers in PubMed, 80 citations in OpenAlex.
- Unraveling Lysosomal Exocytosis: From Molecular Mechanisms to Physiological Functions.Traffic (Copenhagen, Denmark) · 2026Review
- ARF GTPases Function at the Golgi.Sub-cellular biochemistry · 2026Review
- Mechanical Cues Regulate Cargo Sorting and Export at the Golgi.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Arfs on the Golgi: four conductors, one orchestra.Frontiers in molecular biosciences · 2025Review
- The lipid flippase ATP8A1 regulates the recruitment of ARF effectors to the trans-Golgi Network.Archives of biochemistry and biophysics · 2024Article
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- STED imaging of endogenously tagged ARF GTPases reveals their distinct nanoscale localizations.The Journal of cell biology · 2023Article
- Kinetics of Arf1 inactivation regulates Golgi organisation and function in non-adherent fibroblasts.Biology open · 2023Article
- Structural basis for activation of Arf1 at the Golgi complex.Cell reports · 2022Article
- ARF1 with Sec7 Domain-Dependent GBF1 Activates Coatomer Protein I To Support Classical Swine Fever Virus Entry.Journal of virology · 2022Article
- GARP dysfunction results in COPI displacement, depletion of Golgi v-SNAREs and calcium homeostasis proteins.Frontiers in cell and developmental biology · 2022Article
- Arf GTPases Are Required for the Establishment of the Pre-Assembly Compartment in the Early Phase of Cytomegalovirus Infection.Life (Basel, Switzerland) · 2021Article
- Autoregulation of insulin receptor signaling through MFGE8 and the αvβ5 integrin.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Picornaviruses: A View from 3A.Viruses · 2021Review
- The ins and outs of the Arf4-based ciliary membrane-targeting complex.Small GTPases · 2021Review
- The Regulatory Role of GBF1 on Osteoclast Activation Through EIF2a Mediated ER Stress and Novel Marker FAM129A Induction.Frontiers in cell and developmental biology · 2021Article
- ARF GTPases and Their Ubiquitous Role in Intracellular Trafficking Beyond the Golgi.Frontiers in cell and developmental biology · 2021Review
- Enterovirus Infection Induces Massive Recruitment of All Isoforms of Small Cellular Arf GTPases to the Replication Organelles.Journal of virology · 2020Article
- Coordination of Grp1 recruitment mechanisms by its phosphorylation.Molecular biology of the cell · 2020Article
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Authors and funding
7 authors at 5 institutions in 3 countries.
Funding
Abstract
Three Sec7 guanine nucleotide exchange factors (GEFs) activate ADP-ribosylation factors (ARFs) to facilitate coating of transport vesicles within the secretory and endosomal pathways. GBF1 recruits COPI to pre-Golgi and Golgi compartments, whereas BIG1 and BIG2 recruit AP1 and GGA clathrin adaptors to the trans-Golgi network (TGN) and endosomes. Here, we report a functional cascade between these GEFs by showing that GBF1-activated ARFs (ARF4 and ARF5, but not ARF3) facilitate BIG1 and BIG2 recruitment to the TGN. We localize GBF1 ultrastructurally to the pre-Golgi, the Golgi, and also the TGN. Our findings suggest a model in which GBF1 localized within pre-Golgi and Golgi compartments mediates ARF activation to facilitate recruitment of COPI to membranes, whereas GBF1 localized at the TGN mediates ARF activation that leads to the recruitment of BIG1 and BIG2 to the TGN. Membrane-associated BIG1/2 then activates ARFs that recruit clathrin adaptors. In this cascade, an early acting GEF (GBF1) activates ARFs that mediate recruitment of late acting GEFs (BIG1/2) to coordinate coating events within the pre-Golgi/Golgi/TGN continuum. Such coordination may optimize the efficiency and/or selectivity of cargo trafficking through the compartments of the secretory pathway.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.