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- W2989455277 abstract "Members of the TRIM protein family have been shown to gather into structures in both the nucleus and cytoplasm. One TRIM protein family member, TRIM5α, has been shown to form cytoplasmic bodies involved in restricting retroviruses such as HIV-1. Here we applied cryogenic correlated light and electron microscopy (cryo-CLEM) to intact mammalian cells expressing YFP-rhTRIM5α and found hexagonal nets were present whose arm-lengths were similar to those of the hexagonal nets formed by purified TRIM5α in-vitro. We also observed YFP-rhTRIM5α within a diversity of structures with characteristics expected for organelles involved in different stages of macroautophagy, including disorganized protein aggregations (sequestosomes), sequestosomes flanked by flat double-membraned vesicles (sequestosome:phagophore complexes), sequestosomes within a double-membraned vesicle (autophagosomes), and sequestosomes within multi-vesicular autophagic vacuoles (autolysosomes or amphisomes). Vaults were also seen in these structures, consistent with their role in autophagy. Our data (i) support recent reports that TRIM5α can form both well-organized signaling complexes and non-signaling aggregates, (ii) offer the first images of the macroautophagy pathway in a near-native state, and (iii) reveal that vaults arrive early in macroautophagy." @default.
- W2989455277 created "2019-11-22" @default.
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- W2989455277 date "2019-11-07" @default.
- W2989455277 modified "2023-10-16" @default.
- W2989455277 title "Correlated cryogenic fluorescence microscopy and electron cryotomography shows that exogenous TRIM5α can form hexagonal lattices or autophagy aggregates in vivo" @default.
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- W2989455277 doi "https://doi.org/10.1101/835322" @default.
- W2989455277 hasPublicationYear "2019" @default.
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