ArticleJournal of cell science2021
A novel function for Rab1 and Rab11 during secretory granule maturation.
Article in Journal of cell science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Mechanistic dissection of BLTP2 targeting to ER-PM contact sites.bioRxiv : the preprint server for biology · 2026Article
- Singapore grouper iridovirus utilizes Rab1 to facilitate viral trafficking and evade the immune response by targeting the STING-IRF3 pathway.Cell communication and signaling : CCS · 2025Article
- Huntington's disease-associated ankyrin repeat palmitoyl transferases are rate-limiting factors in lysosome formation and fusion.PLoS genetics · 2025Article
- Phosphatidylinositol 4-phosphate; A minor lipid with multiple personalities.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2025Review
- Selection ofInsects · 2025Article
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- Vitamin E Attenuates Red-Light-Mediated Vasodilation: The Benefits of a Mild Oxidative Stress.Antioxidants (Basel, Switzerland) · 2024Article
- The Ykt6-Snap29-Syx13 SNARE complex promotes crinophagy via secretory granule fusion with Lamp1 carrier vesicles.Scientific reports · 2024Article
- Nlp-dependent ER-to-Golgi transport.International journal of biological sciences · 2024Article
- A Rab6 to Rab11 transition is required for dense-core granule and exosome biogenesis in Drosophila secondary cells.PLoS genetics · 2023Article
- Interaction of the sorting nexin 25 homologue Snazarus with Rab11 balances endocytic and secretory transport and maintains the ultrafiltration diaphragm in nephrocytes.Molecular biology of the cell · 2023Article
- Convergence of secretory, endosomal, and autophagic routes in trans-Golgi-associated lysosomes.The Journal of cell biology · 2023Article
- Developmental program-independent secretory granule degradation in larval salivary gland cells of Drosophila.Traffic (Copenhagen, Denmark) · 2022Article
- Focus on the Small GTPase Rab1: A Key Player in the Pathogenesis of Parkinson's Disease.International journal of molecular sciences · 2021Review
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Regulated exocytosis is an essential process whereby specific cargo proteins are secreted in a stimulus-dependent manner. Cargo-containing secretory granules are synthesized in the trans-Golgi network (TGN); after budding from the TGN, granules undergo modifications, including an increase in size. These changes occur during a poorly understood process called secretory granule maturation. Here, we leverage the Drosophila larval salivary glands as a model to characterize a novel role for Rab GTPases during granule maturation. We find that secretory granules increase in size ∼300-fold between biogenesis and release, and loss of Rab1 or Rab11 reduces granule size. Surprisingly, we find that Rab1 and Rab11 localize to secretory granule membranes. Rab11 associates with granule membranes throughout maturation, and Rab11 recruits Rab1. In turn, Rab1 associates specifically with immature granules and drives granule growth. In addition to roles in granule growth, both Rab1 and Rab11 appear to have additional functions during exocytosis; Rab11 function is necessary for exocytosis, while the presence of Rab1 on immature granules may prevent precocious exocytosis. Overall, these results highlight a new role for Rab GTPases in secretory granule maturation.
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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 Socratic graph.