Abstract:
:The Menkes disease gene encodes a P-type transmembrane ATPase (ATP7A) that translocates cytosolic copper ions across intracellular membranes of compartments along the secretory pathway. ATP7A moves from the trans-Golgi network (TGN) to the cell surface in response to exogenously added copper ions and recycles back to the TGN upon copper removal. The protein contains a C-terminal di-leucine motif necessary for internalization from the cell surface. In this study we show that ATP7A is internalized by a novel pathway that is independent of clathrin-mediated endocytosis. Expression of dominant-negative mutants of the dynamin-I, dynamin-II and Eps15 proteins that block clathrin-dependent endocytosis of the transferrin receptor do not inhibit internalization of endogenous ATP7A, or an ATP7A reporter molecule (CD8-MCF1). Similarly, inhibitors of caveolae-mediated uptake do not affect ATP7A internalization whilst preventing uptake of PODIPY-ganglioside GM(1), a caveolae marker. In contrast, expression of a constitutively active mutant of the Rac1 GTPase inhibits plasma membrane internalization of both the ATP7A and transferrin receptor transmembrane proteins. These findings define a novel route required for ATP7A internalization and delivery to endosomes.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Cobbold C,Coventry J,Ponnambalam S,Monaco APdoi
10.1093/hmg/ddg166subject
Has Abstractpub_date
2003-07-01 00:00:00pages
1523-33issue
13eissn
0964-6906issn
1460-2083journal_volume
12pub_type
杂志文章abstract::The members of the huntingtin-interacting protein-1 (HIP1) family, HIP1 and HIP1-related (HIP1r), are multi-domain proteins that interact with inositol lipids, clathrin and actin. HIP1 is over-expressed in a variety of cancers and both HIP1 and HIP1r prolong the half-life of multiple growth factor receptors. To better...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm076
更新日期:2007-06-01 00:00:00
abstract::Cone photoreceptors (cones) are essential for high-resolution daylight vision and colour perception. Loss of cones in hereditary retinal diseases has a dramatic impact on human vision. The mechanisms underlying cone death are poorly understood, and consequently, there are no treatments available. Previous studies sugg...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw219
更新日期:2016-09-01 00:00:00
abstract::Extracellular deposition of amyloid-beta (Aβ) peptide, a metabolite of sequential cleavage of amyloid precursor protein (APP), is a critical step in the pathogenesis of Alzheimer's disease (AD). While death-associated protein kinase 1 (DAPK1) is highly expressed in AD brains and its genetic variants are linked to AD r...
journal_title:Human molecular genetics
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddab006
更新日期:2021-01-12 00:00:00
abstract::Migraine affects ∼14% of the world's population, though not all predisposing causal risk factors are known. We used electronic health records, genetic co-heritability analysis, and a two-sample Mendelian Randomization (MR) design to determine if elevated serum calcium levels were associated with risk of migraine heada...
journal_title:Human molecular genetics
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2017-02-15 00:00:00
abstract::Huntington's disease (HD) is an inherited neurodegenerative disorder caused by the expansion of a CAG repeat in a gene coding for a protein of unknown function. We have raised a polyclonal antibody against a 12 amino acid peptide (residues 2110-2121 of human huntingtin) which specifically recognises huntingtin on West...
journal_title:Human molecular genetics
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doi:10.1093/hmg/5.4.481
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journal_title:Human molecular genetics
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journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddi268
更新日期:2005-10-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.8.1207
更新日期:1998-08-01 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:2015-03-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/4.4.615
更新日期:1995-04-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/6.12.2069
更新日期:1997-11-01 00:00:00
abstract::Expanded glutamine repeats of the ataxin-2 (ATXN2) protein cause spinocerebellar ataxia type 2 (SCA2), a rare neurodegenerative disorder. More recent studies have suggested that expanded ATXN2 repeats are a genetic risk factor for amyotrophic lateral sclerosis (ALS) via an RNA-dependent interaction with TDP-43. Given ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr227
更新日期:2011-08-15 00:00:00
abstract::Wolfram syndrome (WS) is a heterogeneous multisystem neurodegenerative disorder with two allelic variations in addition to a separate subtype known as WS type 2. The wide phenotypic spectrum of WS includes diabetes mellitus and optic atrophy which is often accompanied by diabetes insipidus, deafness, urological and ne...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddz212
更新日期:2019-11-15 00:00:00
abstract::Congenital nephrotic syndrome of the Finnish type (CNF or NPHS1) is an autosomal recessive kidney disorder resulting in severe proteinurea and renal dysfunction. Although the disease occurs predominantly in the Finnish population, many cases in other populations have also been reported. The disease gene (NPHS1) encode...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/10.23.2637
更新日期:2001-11-01 00:00:00
abstract::Parkinson's disease (PD) is a severe neurological disorder, characterized by the progressive degeneration of the dopaminergic nigrostriatal pathway and the presence of Lewy bodies (LBs). The discovery of genes responsible for familial forms of the disease has provided insights into its pathogenesis. Mutations in the p...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg159
更新日期:2003-06-15 00:00:00
abstract::Von Hippel-Lindau (VHL) disease is a dominantly inherited familial cancer syndrome in which affected individuals have a greatly increased predisposition to the development of haemangioblastomas of the central nervous system and retina, renal cell carcinoma and phaeochromocytoma. The VHL gene has been mapped to chromos...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.7.879
更新日期:1993-07-01 00:00:00
abstract::Bone mineral density (BMD) is one of the major determinants of risk for osteoporotic fracture. Multiple studies reveal that peak bone mass is under strong genetic influence. One of the major susceptibility loci for peak spine BMD has been mapped to chromosome 1q21-q23 in the Caucasian population. We have previously re...
journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2009-02-15 00:00:00
abstract::Mutations in the MYOC gene may lead to juvenile open-angle glaucoma with high intraocular pressure, and are detected in about 4% of people with adult onset glaucoma. Most of these mutations are found in the third exon of the gene encoding the olfactomedin-like domain located at the C terminus of the protein. Another o...
journal_title:Human molecular genetics
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更新日期:2002-05-15 00:00:00
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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:2013-03-01 00:00:00
abstract::To elucidate the molecular mechanisms of impaired elastic fiber formation in recessive cutis laxa, we have investigated two disease-causing missense substitutions in fibulin-5, C217R and S227P. Pulse-chase immunoprecipitation experiments indicated that S227P mutant fibulin-5 was synthesized and secreted by skin fibrob...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl414
更新日期:2006-12-01 00:00:00
abstract::Sphingosine-1-phosphate (S1P) is a lipid-signaling molecule produced by sphingosine kinase in response to a wide number of stimuli. By acting through a family of widely expressed G protein-coupled receptors, S1P regulates diverse physiological processes. Here we examined the role of S1P signaling in neurodegeneration ...
journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2008-08-01 00:00:00
abstract::Lung cancer demonstrates the highest mortality in the UK. Previous studies have implicated allelic loss at chromosome 17q in the development of non-small cell lung carcinoma (NSCLC), and a number of known and putative tumour-suppressor genes reside within this region. One candidate tumour-suppressor gene is cytoglobin...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl128
更新日期:2006-07-01 00:00:00
abstract::The sensitivity of single-strand conformation polymorphism (SSCP) analysis for the detection of mutations in the porphobilinogen deaminase (PBGD) gene among Finnish patients with acute intermittent porphyria (AIP) was studied. 13 novel mutations including one de novo event, and six previously characterized mutations w...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/4.2.215
更新日期:1995-02-01 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm082
更新日期:2007-06-01 00:00:00
abstract::Potocki-Lupski syndrome (PTLS; MIM #610883), characterized by neurobehavioral abnormalities, intellectual disability and congenital anomalies, is caused by a 3.7-Mb duplication in 17p11.2. Neurobehavioral studies determined that ∼70-90% of PTLS subjects tested positive for autism or autism spectrum disorder (ASD). We ...
journal_title:Human molecular genetics
pub_type: 杂志文章
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更新日期:2012-07-15 00:00:00
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journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg014
更新日期:2003-01-15 00:00:00
abstract::Mutations in S-phase cyclin A-associated protein in the endoplasmic reticulum (SCAPER) cause a recessively inherited multisystemic disorder whose main features are retinal degeneration and intellectual disability. SCAPER, originally identified as a cell cycle regulator, was also suggested to be a ciliary protein. Beca...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddaa113
更新日期:2020-08-03 00:00:00