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- W1948288237 abstract "Aggregates of green fluorescent protein (GFP)-fused truncated N-terminal huntingtin containing abnormally long polyglutamine tracts (150 repeats of glutamine residue) were purified from an ecdysone-inducible mutant neuro2A cell line (HD150Q-28) by using a fluorescence-activated cell sorter. To analyze the aggregate-interacting proteins, we subjected the purified aggregates to SDS-PAGE; prominent protein bands in the gel were digested with Achromobactor lysyl endopeptidase, followed by a HPLC-mass spectrometry (MS) analysis. The resulting data of tandem MS analysis revealed that, in addition to ubiquitin and widely reported chaperone proteins such as heat shock cognate 70 (HSC70), human DNA J-1 (HDJ-1), and HDJ-2, the translational elongation factor-1alpha (EF-1alpha) and heat shock protein 84 (HSP84) also were recognized as aggregate-interacting proteins. Sequestration of these proteins to aggregates was confirmed further by several immunochemical methods. We confirmed that, in addition to the other known proteins, EF-1alpha and HSP84 also colocalized with the intracellular aggregates. An assay of the transient expression of EF-1alpha and HSP84 in HD150Q-28 cells revealed that both proteins improved cell viability. Moreover, the rate of aggregate formation decreased in both transfectants. Our study suggests that both EF-1alpha and HSP84 are involved in the neurodegenerative process of polyglutamine diseases." @default.
- W1948288237 created "2016-06-24" @default.
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- W1948288237 date "2002-11-01" @default.
- W1948288237 modified "2023-10-18" @default.
- W1948288237 title "Purification of polyglutamine aggregates and identification of elongation factor-1alpha and heat shock protein 84 as aggregate-interacting proteins." @default.
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