Phase separation and toxicity of C9orf72 poly(PR) depends on alternate distribution of arginine.
Phase separation and toxicity of C9orf72 poly(PR) depends on alternate distribution of arginine.
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DOI:
10.1083/jcb.202103160
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发表时间:
2021-11-01
期刊:
影响因子:
--
通讯作者:
Kanekura K
中科院分区:
文献类型:
--
作者:
Chen C;Yamanaka Y;Ueda K;Li P;Miyagi T;Harada Y;Tezuka S;Narumi S;Sugimoto M;Kuroda M;Hayamizu Y;Kanekura K
Chen et al. provide a novel insight on how poly(PR) dipeptides from C9orf72 gene exert cytotoxicity. The alternate distribution of Arg facilitates multivalent protein–protein interactions with proteins harboring acidic motifs and disturbs their functions through entrapment in the phase-separated droplets. Arg (R)-rich dipeptide repeat proteins (DPRs; poly(PR): Pro-Arg and poly(GR): Gly-Arg), encoded by a hexanucleotide expansion in the C9ORF72 gene, induce neurodegeneration in amyotrophic lateral sclerosis (ALS). Although R-rich DPRs undergo liquid–liquid phase separation (LLPS), which affects multiple biological processes, mechanisms underlying LLPS of DPRs remain elusive. Here, using in silico, in vitro, and in cellulo methods, we determined that the distribution of charged Arg residues regulates the complex coacervation with anionic peptides and nucleic acids. Proteomic analyses revealed that alternate Arg distribution in poly(PR) facilitates entrapment of proteins with acidic motifs via LLPS. Transcription, translation, and diffusion of nucleolar nucleophosmin (NPM1) were impaired by poly(PR) with an alternate charge distribution but not by poly(PR) variants with a consecutive charge distribution. We propose that the pathogenicity of R-rich DPRs is mediated by disturbance of proteins through entrapment in the phase-separated droplets via sequence-controlled multivalent protein–protein interactions.
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影响因子:
4.6
作者:
Kanekura K;Harada Y;Fujimoto M;Yagi T;Hayamizu Y;Nagaoka K;Kuroda M
通讯作者:
Kuroda M
DOI:
10.1126/science.1254917
发表时间:
2014-09-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Kwon I;Xiang S;Kato M;Wu L;Theodoropoulos P;Wang T;Kim J;Yun J;Xie Y;McKnight SL
通讯作者:
McKnight SL
影响因子:
4.8
作者:
Babinchak, W. Michael;Haider, Raza;Surewicz, Witold K.
通讯作者:
Surewicz, Witold K.
影响因子:
8.4
作者:
Edun DN;Flanagan MR;Serrano AL
通讯作者:
Serrano AL
影响因子:
16.6
作者:
Chang LW;Lytle TK;Radhakrishna M;Madinya JJ;Vélez J;Sing CE;Perry SL
通讯作者:
Perry SL