Abstract:
:Lipoprotein lipase (LPL) is a 448-amino-acid head-to-tail dimeric enzyme that hydrolyzes triglycerides within capillaries. LPL is secreted by parenchymal cells into the interstitial spaces; it then binds to GPIHBP1 (glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1) on the basolateral face of endothelial cells and is transported to the capillary lumen. A pair of amino acid substitutions, C418Y and E421K, abolish LPL binding to GPIHBP1, suggesting that the C-terminal portion of LPL is important for GPIHBP1 binding. However, a role for LPL's N terminus has not been excluded, and published evidence has suggested that only full-length homodimers are capable of binding GPIHBP1. Here, we show that LPL's C-terminal domain is sufficient for GPIHBP1 binding. We found, serendipitously, that two LPL missense mutations, G409R and E410V, render LPL susceptible to cleavage at residue 297 (a known furin cleavage site). The C terminus of these mutants (residues 298-448), bound to GPIHBP1 avidly, independent of the N-terminal fragment. We also generated an LPL construct with an in-frame deletion of the N-terminal catalytic domain (residues 50-289); this mutant was secreted but also was cleaved at residue 297. Once again, the C-terminal domain (residues 298-448) bound GPIHBP1 avidly. The binding of the C-terminal fragment to GPIHBP1 was eliminated by C418Y or E421K mutations. After exposure to denaturing conditions, the C-terminal fragment of LPL refolds and binds GPIHBP1 avidly. Thus, the binding of LPL to GPIHBP1 requires only the C-terminal portion of LPL and does not depend on full-length LPL homodimers.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Gin P,Goulbourne CN,Adeyo O,Beigneux AP,Davies BS,Tat S,Voss CV,Bensadoun A,Fong LG,Young SGdoi
10.1093/hmg/dds127subject
Has Abstractpub_date
2012-07-01 00:00:00pages
2961-72issue
13eissn
0964-6906issn
1460-2083pii
dds127journal_volume
21pub_type
杂志文章abstract::Congenital vertebral malformations (CVMs) are associated with human TBX6 compound inheritance that combines a rare null allele and a common hypomorphic allele at the TBX6 locus. Our previous in vitro evidence suggested that this compound inheritance resulted in a TBX6 gene dosage of less than haploinsufficiency (i.e. ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddy358
更新日期:2019-02-15 00:00:00
abstract::By GenBank database searches and PCR, we have identified a novel human Bcl2-like gene, Bcl2-L-10, which contains conserved BH4, BH1 and BH2 domains but lacks BH3 domain. The Bcl2-L-10 gene has been assigned to chromosome 15q21.2. Transfection experiments demonstrated that Bcl2-L-10 can block apoptosis induced by inter...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/10.21.2329
更新日期:2001-10-01 00:00:00
abstract::Lafora progressive myoclonus epilepsy, caused by defective laforin or malin, insidiously present in normal teenagers with cognitive decline, followed by rapidly intractable epilepsy, dementia and death. Pathology reveals neurodegeneration with neurofibrillary tangle formation and Lafora bodies (LBs). LBs are deposits ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddi306
更新日期:2005-09-15 00:00:00
abstract::A gene's transcriptional output is the combined product of two inputs: diffusible factors in the cellular milieu acting in trans, and chromatin state acting in cis. Here, we describe a strategy for dissecting the relative contribution of cis versus trans mechanisms to gene regulation. Referred to as trans complementat...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn409
更新日期:2009-03-01 00:00:00
abstract::Multiple endocrine neoplasia type 2 (MEN 2) is a dominantly inherited cancer syndrome which affects thyroid C cells, and with variable frequency, the adrenal medulla, parathyroid and enteric autonomic ganglia. The syndrome is due to germline mutation in the receptor tyrosine kinase gene, RET. We have recently shown an...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.10.1771
更新日期:1994-10-01 00:00:00
abstract::Fanconi anaemia (FA) is an autosomal recessive genetic disorder characterized by progressive bone marrow failure, multiple congenital abnormalities, and an increased risk of cancer. FA cells are characterized by chromosomal instability and hypersensitivity to DNA interstrand crosslinking agents. At least eight complem...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg266
更新日期:2003-10-01 00:00:00
abstract::We report identification of a novel genetic locus (GLC1P) for normal tension glaucoma (NTG) on chromosome 12q14 using linkage studies of an African-American pedigree (maximum non-parametric linkage score = 19.7, max LOD score = 2.7). Subsequent comparative genomic hybridization and quantitative polymerase chain reacti...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr123
更新日期:2011-06-15 00:00:00
abstract::Proteins with iron-sulfur (Fe-S) clusters participate in multiple metabolic pathways throughout the cell. The mitochondrial ABC half-transporter Abcb7, which is mutated in X-linked sideroblastic anemia with ataxia in humans, is a functional ortholog of yeast Atm1p and is predicted to export a mitochondrially derived m...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl012
更新日期:2006-03-15 00:00:00
abstract::Huntington's disease (HD) is a dominantly inherited genetic disease caused by mutant huntingtin (htt) protein with expanded polyglutamine (polyQ) tracts. A neuropathological hallmark of HD is the presence of neuronal inclusions of mutant htt. p62 is an important regulatory protein in selective autophagy, a process by ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu522
更新日期:2015-02-15 00:00:00
abstract::Our fundamental understanding of how several thousand diverse RNAs are recognized in the soma, sorted, packaged, transported and localized within the cell is fragmentary. The COPa and COPb proteins of the coatomer protein I (COPI) vesicle complex were reported to interact with specific RNAs and represent a candidate R...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/dds480
更新日期:2013-02-15 00:00:00
abstract::Genetic variants in one-carbon folate metabolism have been identified as risk factors for disease because they may impair the production or use of one-carbon folates required for nucleotide synthesis and methylation. p.R653Q (1958G>A) is a single-nucleotide polymorphism (SNP) in the 10-formyltetrahydrofolate (formylTH...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt223
更新日期:2013-09-15 00:00:00
abstract::Neurofibromas are one of the most characteristic features of neurofibromatosis type 1 (NF1), an inherited autosomal-dominant neurogenetic disorder affecting 1 in 3500 individuals worldwide. These benign tumors mainly consist of Schwann cells (SCs) and fibroblasts. Recent evidence demonstrates that somatic mutations at...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/9.20.3055
更新日期:2000-12-12 00:00:00
abstract::The zinc metalloprotease ZMPSTE24 plays a critical role in nuclear lamin biology by cleaving the prenylated and carboxylmethylated 15-amino acid tail from the C-terminus of prelamin A to yield mature lamin A. A defect in this proteolytic event, caused by a mutation in the lamin A gene (LMNA) that eliminates the ZMPSTE...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/dds233
更新日期:2012-09-15 00:00:00
abstract::Huntington's disease (HD) is caused by a pathological expansion of a CAG repeat in the first exon of the gene coding for huntingtin, resulting in an abnormally long polyglutamine stretch. Despite its widespread expression, mutant huntingtin leads to selective neuronal loss in the striatum and cortex. Here we report th...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/11.21.2547
更新日期:2002-10-01 00:00:00
abstract::CHD7 mutations are implicated in a majority of cases of the congenital disorder, CHARGE syndrome. CHARGE, an autosomal dominant syndrome, is known to affect multiple tissues including eye, heart, ear, craniofacial nerves and skeleton and genital organs. Using a morpholino-antisense-oligonucleotide-based zebrafish mode...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw198
更新日期:2016-08-15 00:00:00
abstract::Usher syndrome (USH) is a genetically heterogeneous group of autosomal recessive deaf-blinding disorders. Pathophysiology leading to the blinding retinal degeneration in USH is uncertain. There is evidence for involvement of the photoreceptor cilium, photoreceptor synapse, the adjacent retinal pigment epithelium (RPE)...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn140
更新日期:2008-08-01 00:00:00
abstract::CDH3/P-cadherin is a classical cadherin. Overexpression of which has been associated with proliferative lesions of high histological grade, decreased cell polarity and poor survival of patients with breast cancer. In vitro studies showed that it can be up-regulated by ICI 182,780, suggesting that the lack of ERalpha s...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq134
更新日期:2010-07-01 00:00:00
abstract::Induced pluripotent stem cell (iPSC)-derived cortical neurons potentially present a powerful new model to understand corticogenesis and neurological disease. Previous work has established that differentiation protocols can produce cortical neurons, but little has been done to characterize these at cellular resolution....
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv637
更新日期:2016-03-01 00:00:00
abstract::Rod and cone photoreceptors in mammalian retina are generated from common pool(s) of neuroepithelial progenitors. NRL, CRX and NR2E3 are key transcriptional regulators that control photoreceptor differentiation. Mutations in NR2E3, a rod-specific orphan nuclear receptor, lead to loss of rods, increased density of S-co...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl185
更新日期:2006-09-01 00:00:00
abstract::Bitter taste perception is initiated by TAS2R receptors, which respond to agonists by triggering depolarization of taste bud cells. Mutations in TAS2Rs are known to affect taste phenotypes by altering receptor function. Evidence that TAS2Rs overlap in ligand specificity suggests that they may also contribute joint eff...
journal_title:Human molecular genetics
pub_type: 临床试验,杂志文章
doi:10.1093/hmg/ddr252
更新日期:2011-09-01 00:00:00
abstract::The association between breast cancer risk and genetic variants of fibroblast growth factor receptor 2 (FGFR2) has been identified and repeatedly confirmed; however, the mechanism underlying FGFR2 in breast tumorigenesis remains obscure. Given that breast tumorigenesis is particularly related to DNA double-strand-brea...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv102
更新日期:2015-06-15 00:00:00
abstract::We have constructed a long-range restriction map of the region on chromosome 4q that contains the gene for facioscapulohumeral muscular dystrophy (FSHD). This region contains the linkage group cen ... D4S163-D4S139-D4F35S1-D4F104S1-FSHD ... 4qter, which spans a genetic distance of about 5 cM. Pulse field gel electroph...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.10.1667
更新日期:1993-10-01 00:00:00
abstract::Huntington's disease (HD) and myotonic dystrophy (DM1) are caused by trinucleotide repeat expansions. The repeats show different instability patterns according to the disorder, cell type and developmental stage. Here we studied the behavior of these repeats in DM1- and HD-derived human embryonic stem cells (hESCs) bef...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq456
更新日期:2011-01-01 00:00:00
abstract::Neurofibromatosis type 1 (NF1) is one of the most common inherited disorders. The gene responsible for the disease has a very high mutation rate, approximately fifty per cent of NF1 patients appear to have a de novo mutation. The search for mutations is hampered by the large size of the NF1 gene and up to date, relati...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.4.639
更新日期:1994-04-01 00:00:00
abstract::The Vesicle-associated membrane protein (VAMP)-Associated Protein B (VAPB) is the causative gene of amyotrophic lateral sclerosis 8 (ALS8) in humans. Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease characterized by selective death of motor neurons leading to spasticity, muscle atrophy an...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt118
更新日期:2013-07-01 00:00:00
abstract::While the presence of a lipoyl-containing protein (protein X) separate from lipoyl transacetylase in the pyruvate dehydrogenase complex (PDC) has been known for some time, until recently only the cDNA for the yeast enzyme has been cloned. We have cloned, sequenced and characterized the cDNA encoding the human protein ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.3.501
更新日期:1998-03-01 00:00:00
abstract::Development of gene therapy for the muscular dystrophies represents a daunting challenge requiring significant advances in our knowledge of the defective genes, muscle promoters, viral vectors, immune system surveillance and methods for systemic delivery of vectors. However, tremendous progress has been made in develo...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/11.20.2355
更新日期:2002-10-01 00:00:00
abstract::Meta-analysis of genome-wide association studies has resulted in the identification of hundreds of genetic variants associated with growth and stature. Determining how these genetic variants influence growth is important, but most are non-coding, and there is little understanding of how these variants contribute to ad...
journal_title:Human molecular genetics
pub_type: 杂志文章,meta分析
doi:10.1093/hmg/ddw165
更新日期:2016-08-01 00:00:00
abstract::Mutation analysis was performed on DNA samples of 965 individuals from four different ethnic groups in South Africa, in an attempt to determine the spectrum of sequence variants in the haemochromatosis ( HFE ) gene. This population screening approach, utilizing a combined heteroduplex and single-strand conformation po...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.8.1517
更新日期:1999-08-01 00:00:00
abstract::To further identify novel susceptibility loci of nasopharyngeal carcinoma (NPC), we here extended our previous genome-wide association study (GWAS) by boosting statistical power with larger sample size and validating more SNPs in the ranking list based on the GWAS P-values. The discovery stage consisting of 463,250 SN...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw200
更新日期:2016-08-15 00:00:00