Abstract:
:Insolubility of membrane components in non-ionic detergents such as Triton X-100 at low temperature is a widely used biochemical criterion to identify, isolate and characterize membrane domains. In this work, we monitored the detergent insolubility of the serotonin(1A) receptor in CHO cell membranes and its modulation by membrane cholesterol. The serotonin(1A) receptor is an important member of the G-protein coupled receptor family. It is implicated in the generation and modulation of various cognitive, behavioral and developmental functions and serves as a drug target. Our results show that a significant fraction (∼28%) of the serotonin(1A) receptor resides in detergent-resistant membranes (DRMs). Interestingly, the fraction of the serotonin(1A) receptor in DRMs exhibits a reduction upon membrane cholesterol depletion. In addition, we show that contents of DRM markers such as flotillin-1, caveolin-1 and GM₁ are altered in DRMs upon cholesterol depletion. These results assume significance since the function of the serotonin(1A) receptor has previously been shown to be affected by membrane lipids, specifically cholesterol. Our results are relevant in the context of membrane organization of the serotonin(1A) receptor in particular, and G-protein coupled receptors in general.
journal_name
Mol Membr Bioljournal_title
Molecular membrane biologyauthors
Sahu SK,Saxena R,Chattopadhyay Adoi
10.3109/09687688.2012.688147subject
Has Abstractpub_date
2012-11-01 00:00:00pages
290-8issue
7eissn
0968-7688issn
1464-5203journal_volume
29pub_type
杂志文章abstract::Ionotropic glutamate receptors belong to the superfamily of P-loop channels as well as K(+), Na(+), and Ca(2+) channels. However, the structural similarity between ion channels of the glutamate receptors and K(+) channels is a matter of discussion. The aim of this study was to analyze differences between the structure...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687860601008806
更新日期:2007-03-01 00:00:00
abstract::Dengue fever is one of the most widespread tropical diseases in the world. The disease is caused by a virus member of the Flaviviridae family, a group of enveloped positive sense single-stranded RNA viruses. Dengue virus infection is mediated by virus glycoprotein E, which binds to the cell surface. After uptake by en...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687680701633091
更新日期:2008-02-01 00:00:00
abstract::The ATP binding cassette (ABC) transporter Atm1p of the mitochondrial inner membrane performs crucial roles in both the biogenesis of cytosolic/nuclear iron-sulfur proteins and cellular iron homeostasis. Since the function of the mitochondrial iron-sulfur cluster (ISC) assembly machinery is also required for these two...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687860500473630
更新日期:2006-03-01 00:00:00
abstract::Numerous cell surface receptors propagate activation signals to the interior of the cell via tyrosine phosphorylation of transmembrane proteins. This leads to the phosphotyrosine (PiY)-mediated recruitment of cytoplasmic signalling protein complexes which catalyze crucial biochemical signalling reactions. Here we desc...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687680802637660
更新日期:2009-04-01 00:00:00
abstract::CitS of Klebsiella pneumoniae and GltS of Escherichia coli are Na+-dependent secondary transporters from different families that are believed to share the same fold and quaternary structure. A 10 kDa protein tag (Biotin Acceptor Domain [BAD]) was fused to the N-terminus of both proteins (CitS-BAD1 and GltS-BAD1, respe...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687688.2011.581252
更新日期:2011-08-01 00:00:00
abstract::Nedd4 family ubiquitin ligases regulate trafficking and degradation of numerous target substrates in different cellular compartments, including at the plasma membrane, in endosomes, in the secretory pathway and in the nucleus. WWP1 is a Nedd4 family protein closely related to mouse Itch and Drosophila Su(dx), both of ...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687860600665010
更新日期:2006-05-01 00:00:00
abstract::Cystic fibrosis transmembrane conductance regulator (CFTR) is a cAMP-regulated C1(-) channel. Malfunction of CFTR causes cystic fibrosis (CF). CFTR belongs to an ATP-binding cassette (ABC) transporter superfamily which includes P-glycoprotein (Pgp), the molecule that is responsible for multidrug resistance in cancer c...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687689609160572
更新日期:1996-01-01 00:00:00
abstract::'No cellular organelle has been the subject of as many, as long-lasting or as diverse polemics as the Golgi apparatus'. This statement was made by Whaley almost 30 years ago in the book The Golgi Apparatus and still holds true today, perhaps more then ever. Why is this? How come something as mundane as a series of int...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/0968768031000114024
更新日期:2003-07-01 00:00:00
abstract::Notch is a vitally important signalling receptor controlling cell fate determination and pattern formation in numerous ways during development of both invertebrate and vertebrate species. An intriguing pathway for the Notch signal has emerged where, after ligand-dependent proteolysis, an intracellular fragment of the ...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/09687680110112929
更新日期:2002-01-01 00:00:00
abstract::Membrane microdomains enriched in cholesterol, sphingolipids (rafts), and specific proteins are involved in important physiological functions. However their structure, size and stability are still controversial. Given that detergent-resistant membranes (DRMs) are in the liquid-ordered state and are rich in raft-like c...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687688.2014.949319
更新日期:2014-09-01 00:00:00
abstract::Absorption of dietary fat in the small intestine involves epithelial exposure to potentially harmful molecules such as bile salts and free fatty acids. We used organ culture of porcine jejunal explants incubated with a pre-digested mixture of fat (plant oil), bile and pancreatin to mimick the physiological process of ...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687688.2013.780642
更新日期:2013-05-01 00:00:00
abstract::Neurotransmitter receptor trafficking in and out synapses has emerged as a key process to regulate synaptic transmission during synaptic development and plasticity both at excitatory and inhibitory synapses. Lateral diffusion of surface neurotransmitter receptors has recently emerged as a key pathway to regulate recep...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/09687680801958364
更新日期:2008-05-01 00:00:00
abstract::Notch receptor signalling plays a central role in development and its misfunction has been linked to a number of diseases. In the cannonical Notch signalling pathway, ligand binding to Notch activates a series of proteolytic cleavages that release the Notch intracellular domain for trafficking to the nucleus, where it...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/09687860500129778
更新日期:2005-07-01 00:00:00
abstract::The Amt/Mep/Rh family of integral membrane proteins comprises ammonium transporters of bacteria, archaea and eukarya, as well as the Rhesus proteins found in animals. They play a central role in the uptake of reduced nitrogen for biosynthetic purposes, in energy metabolism, or in renal excretion. Recent structural inf...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/09687680701388423
更新日期:2007-09-01 00:00:00
abstract::Glu-269, which is located on the hydrophilic face of putative helix VIII in the lactose permease of Escherichia coli, has been replaced with Asp, Gln or Cys by oligonucleotide-directed, site specific mutagenesis. Cells expressing Asp-269 permease exhibit no lactose accumulation or lactose-induced H+ translocation, but...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687689409161024
更新日期:1994-01-01 00:00:00
abstract::The cyanelles of the glaucocystophyte alga Cyanophora paradoxa resemble endosymbiotic cyanobacteria in morphology, pigmentation and, especially, in the presence of a peptidoglycan wall situated between the inner and outer envelope membranes. However, it is now clear that cyanelles in fact are primitive plastids. Phylo...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/09687860500041411
更新日期:2005-01-01 00:00:00
abstract::2B is a 99 amino acid membrane protein encoded by enteroviruses such as polio and coxsackie viruses with two transmembrane domains. The protein is found to make membranes of infected cells permeable. Using a computational approach which positions the models and assesses stability by molecular dynamics (MD) simulations...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687680903164101
更新日期:2009-08-01 00:00:00
abstract::Spontaneous membrane adsorption, folding and insertion of the synthetic WALP16 and KALP16 peptides was studied by computer simulations starting from completely extended conformations. The peptides were simulated using an unmodified all-atom force field in combination with an efficient Monte Carlo sampling algorithm. T...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687680802020313
更新日期:2008-04-01 00:00:00
abstract::Hereditary spherocytosis (HS), a common human inherited haemolytic anaemia, is associated with partial deficiency of different erythrocyte membrane proteins. In a subset of dominant HS, a partial membrane expression deficiency of band 3, the erythrocyte anion exchanger (AE1), have previously been characterized, and se...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/096876899294526
更新日期:1999-10-01 00:00:00
abstract::TGN38 is a heavily glycosylated, type I integral membrane protein which is predominantly localized to the trans Golgi network (TGN), but which constitutively traffics between the TGN and the cell surface. The trafficking of TGN38 has been extensively studied in non-polarized cells, and a short, tyrosine-based, peptide...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687689809074524
更新日期:1998-07-01 00:00:00
abstract::Microorganisms that survive in natural environments form organized multicellular communities, biofilms and colonies with specific properties. During stress and nutrient limitation, slow growing and senescent cells in such communities retain vital processes by maintaining plasma membrane integrity and retaining the abi...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687680902893130
更新日期:2009-05-01 00:00:00
abstract::The assessment of the transverse distribution and mobility of NBD-labelled phospholipid analogues in biological membranes by selective chemical destruction of fluorescent label in the outer monolayer with dithionite has been investigated using resealed erythrocyte ghosts as a model system. The distribution of those an...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687689409161028
更新日期:1994-01-01 00:00:00
abstract::Flavonoids are ubiquitous polyphenolic compounds, found in vascular plants, which are endowed with a large variety of biological effects. Some of these effects have been assumed to result from interactions with the cell plasma membrane. In order to investigate the nature of these interactions a fluorescence study was ...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/096876899294616
更新日期:1999-04-01 00:00:00
abstract::Time and distance scales in membranes are discussed in relation to the inference of domain structure from spectroscopic measurements. Each type of spectroscopy has a natural time scale set by the magnitude of the interactions that determine the spectral width. For fluid membranes, the lateral diffusion of the lipid mo...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.3109/09687689509038489
更新日期:1995-01-01 00:00:00
abstract::Palmitoylation is required for the activities of several cancer-associated proteins, making the palmitoyl acyltransferase (PAT) enzymes that catalyze these reactions potential targets for anticancer therapeutics. In this study, we sought to identify and characterize a human PAT with activity toward N-terminally myrist...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687681003616854
更新日期:2010-04-01 00:00:00
abstract::At least four different types of interaction between protein transmembrane helices have been described to date. These include the use of charge-pair interactions that can play a positive or negative role in the assembly of multi-subunit complexes such as the T cell receptor, or recruit signal transducing accessory mol...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.3109/09687689609160579
更新日期:1996-04-01 00:00:00
abstract::Glucosyltransferases (Gtrs) and O-acetyltransferase (Oac) are integral membrane proteins embedded within the cytoplasmic membrane of Shigella flexneri. Gtrs and Oac are responsible for unidirectional host serotype conversion by altering the epitopic properties of the bacterial surface lipopolysaccharide (LPS) O-antige...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687680903552250
更新日期:2010-04-01 00:00:00
abstract::In Saccharomyces cerevisiae Jen1p is a lactate/proton symporter belonging to the lactate/pyruvate:H(+) symporter subfamily (TC#2.A.1.12.2) of the Major Facilitator Superfamily. We investigated structure-function relationships of Jen1p using a rational mutational analysis based on the identification of conserved amino ...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.1080/09687680701342669
更新日期:2007-09-01 00:00:00
abstract::Significant progress has been made in membrane protein engineering over the last 5 years, based largely on the re-design of existing scaffolds. Engineering techniques that have been employed include direct genetic engineering, both covalent and non-covalent modification, unnatural amino acid mutagenesis and total synt...
journal_title:Molecular membrane biology
pub_type: 杂志文章,评审
doi:10.1080/09687680410001716853
更新日期:2004-07-01 00:00:00
abstract::The transverse distribution of phosphatidylglycerol (PG) across the inner membrane of Escherichia coli was studied. The oxidation of PG by periodate was used to discriminate between the PG present in the cytoplasmic and in the periplasmic leaflet of the inner membrane. Applied to large unilamellar vesicles derived of ...
journal_title:Molecular membrane biology
pub_type: 杂志文章
doi:10.3109/09687689709048168
更新日期:1997-01-01 00:00:00