| Literature DB >> 29367274 |
Carlos Tejeda-Guzmán1, Abraham Rosas-Arellano1, Thomas Kroll2, Samuel M Webb2, Martha Barajas-Aceves3, Beatriz Osorio1, Fanis Missirlis4.
Abstract
Membrane transporters and sequestration mechanisms concentrate metal ions differentially into discrete subcellular microenvironments for use in protein cofactors, signalling, storage or excretion. Here we identify zinc storage granules as the insect's major zinc reservoir in principal Malpighian tubule epithelial cells of Drosophila melanogaster The concerted action of Adaptor Protein-3, Rab32, HOPS and BLOC complexes as well as of the white-scarlet (ABCG2-like) and ZnT35C (ZnT2/ZnT3/ZnT8-like) transporters is required for zinc storage granule biogenesis. Due to lysosome-related organelle defects caused by mutations in the homologous human genes, patients with Hermansky-Pudlak syndrome may lack zinc granules in beta pancreatic cells, intestinal paneth cells and presynaptic vesicles of hippocampal mossy fibers.Entities:
Keywords: AP-3 complex; Eye color mutants; ICP-OES; Malpighian tubules; Synchrotron; Zincosomes
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Year: 2018 PMID: 29367274 PMCID: PMC5897703 DOI: 10.1242/jeb.168419
Source DB: PubMed Journal: J Exp Biol ISSN: 0022-0949 Impact factor: 3.312