Abstract:
:Huntington's disease is caused by an expanded polyglutamine tract in huntingtin protein, leading to accumulation of huntingtin in the nuclei of striatal neurons. The 18 amino-acid amino-terminus of huntingtin is an amphipathic alpha helical membrane-binding domain that can reversibly target to vesicles and the endoplasmic reticulum (ER). The association of huntingtin to the ER is affected by ER stress. A single point mutation in huntingtin 1-18 predicted to disrupt this helical structure displayed striking phenotypes of complete inhibition of polyglutamine-mediated aggregation, increased huntingtin nuclear accumulation and greatly increased mutant huntingtin toxicity in a striatal-derived mouse cell line. Huntingtin vesicular interaction mediated by 1-18 is specific to late endosomes and autophagic vesicles. We propose that huntingtin has a normal biological function as an ER-associated protein that can translocate to the nucleus and back out in response to ER stress or other events. The increased nuclear entry of mutant huntingtin due to loss of ER-targeting results in increased toxicity.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Atwal RS,Xia J,Pinchev D,Taylor J,Epand RM,Truant Rdoi
10.1093/hmg/ddm217subject
Has Abstractpub_date
2007-11-01 00:00:00pages
2600-15issue
21eissn
0964-6906issn
1460-2083pii
ddm217journal_volume
16pub_type
杂志文章abstract::Ataxia oculomotor apraxia type 2 (AOA2) is an autosomal recessive neurodegenerative disorder characterized by cerebellar ataxia and oculomotor apraxia. The gene mutated in AOA2, SETX, encodes senataxin, a putative DNA/RNA helicase which shares high homology to the yeast Sen1p protein and has been shown to play a role ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp278
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abstract::Prader-Willi syndrome (PWS) is caused by the loss of expression of imprinted genes in chromosome 15q11-q13. Affected individuals exhibit neonatal hypotonia, developmental delay and childhood-onset obesity. Necdin, a protein implicated in the terminal differentiation of neurons, is the only PWS candidate gene to reduce...
journal_title:Human molecular genetics
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journal_title:Human molecular genetics
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp506
更新日期:2010-02-01 00:00:00
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journal_title:Human molecular genetics
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更新日期:2007-03-15 00:00:00
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journal_title:Human molecular genetics
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journal_title:Human molecular genetics
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2011-08-01 00:00:00
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更新日期:2011-03-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2015-07-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.7.1157
更新日期:1999-07-01 00:00:00
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journal_title:Human molecular genetics
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更新日期:2018-05-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2004-12-01 00:00:00
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journal_title:Human molecular genetics
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更新日期:2011-08-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.7.1129
更新日期:1998-07-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv085
更新日期:2015-06-15 00:00:00
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journal_title:Human molecular genetics
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更新日期:2015-12-20 00:00:00
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journal_title:Human molecular genetics
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journal_title:Human molecular genetics
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journal_title:Human molecular genetics
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更新日期:1997-01-01 00:00:00
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更新日期:1993-09-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2016-05-15 00:00:00
abstract::The role of BRCA1 in breast and ovarian tumor suppression has been primarily ascribed to the maintenance of genome integrity. BRCA1 interacts with components of the non-homologous end-joining pathway previously shown to play a role in telomere maintenance in yeast. Here, we provide evidence that links Brca1 with telom...
journal_title:Human molecular genetics
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更新日期:2006-03-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2017-09-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:1997-03-01 00:00:00
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journal_title:Human molecular genetics
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更新日期:2015-10-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.9.1401
更新日期:1993-09-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:1997-12-01 00:00:00