Abstract:
:The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that mediates the toxicity of dioxin and other xenobiotics. In the absence of exogenous ligand, AhR is cytosolic. We investigated how AhR is retained in the cytosol and how dioxin induces AhR to move to the nucleus. Disruption of nuclear export of AhR by the nuclear export inhibitor leptomycin B (LMB) or by mutation of the AhR nuclear export signal resulted in nuclear accumulation of AhR in the absence of exogenous ligand. Mutation of the AhR nuclear localization signal resulted in defects in nuclear import of AhR in both the presence and the absence of exogenous ligand. Dioxin treatment caused a more rapid accumulation of AhR in the nucleus than LMB treatment. In the presence of both dioxin and LMB, nuclear accumulation of AhR was more rapid than in the presence of dioxin alone. Our results show that AhR shuttles between the nucleus and the cytosol in the absence of exogenous ligand. Binding of ligand induces an increase in the rate of nuclear import of AhR but does not eliminate nuclear export of AhR.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Richter CA,Tillitt DE,Hannink Mdoi
10.1006/abbi.2001.2339subject
Has Abstractpub_date
2001-05-15 00:00:00pages
207-17issue
2eissn
0003-9861issn
1096-0384pii
S0003-9861(01)92339-2journal_volume
389pub_type
杂志文章abstract::Cancer osaka thyroid (COT), a human MAP 3 K, is essential for lipopolysaccharide activation of the Erk MAPK cascade in macrophages. COT 30--467 is insoluble, whereas low levels of COT 30--397 can be expressed, but this protein is unstable. However, both COT 30--467 and COT 30--397 are expressed in a soluble and stable...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2005.06.020
更新日期:2005-09-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90333-4
更新日期:1986-05-01 00:00:00
abstract::The ionization of 4-nitroimidazole to 4-nitroimidazolate was investigated as a function of ionic strength. The apparent pKa varies from 8.99 to 9.50 between 0.001 and 1.0 M ionic strength, respectively, at 25 degrees C. The ionic strength dependence of this ionization is anomalous. The binding of 4-nitroimidazole by h...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.2039
更新日期:2000-10-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90199-7
更新日期:1985-05-01 00:00:00
abstract::Low-molecular-weight (LMW) thiols are a class of highly reactive compounds massively involved in the maintenance of cellular redox homeostasis. They are implicated in plant responses to almost all stress factors, as well as in the regulation of cellular metabolism. The most studied LMW thiols are glutathione and its b...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2014.07.018
更新日期:2014-10-15 00:00:00
abstract::Maintenance of genome integrity is essential for the proper function of all cells and organisms. In response to both endogenous and exogenous DNA damaging agents, mammalian cells have evolved a delicate system to sense DNA damage, stop cell cycle progression, modulate cell metabolism, repair damaged DNA, and induce pr...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2016.02.018
更新日期:2016-03-15 00:00:00
abstract::Activation of different forms of adenylate cyclases (AC) by forskolin and displacement of [14,15-3H]dihydroforskolin binding from membranes by forskolin in the absence or presence of specific stimulatory hormone and beta, gamma-imidoguanosine 5'-triphosphate (Gpp(NH)p) have been studied. These conditions have been use...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90062-7
更新日期:1986-11-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2001.2378
更新日期:2001-06-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2010.05.025
更新日期:2010-08-15 00:00:00
abstract::The mechanisms leading to the age-related loss of endothelial nitric oxide (NO) and NO-dependent vasodilation remain largely unknown. Freshly isolated endothelium from young (6 months) and old (36 months) F344xBrN rats were analyzed for endothelial nitric oxide synthase (eNOS) protein, its subcellular distribution, an...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2006.02.017
更新日期:2006-10-01 00:00:00
abstract::Characterization of aldose reductase purified from human placenta confirms that activation, as first analyzed in detail for the bovine enzyme, also occurs in humans. Routinely between 5 and 20% of the aldose reductase activity freshly purified from human placenta exhibits kinetic properties and insensitivity to aldose...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0096
更新日期:1996-03-01 00:00:00
abstract::Extracellular ATP is known to increase the membrane permeability of a variety of cells. Addition of ATP to human leukemic lymphocytes loaded with the Ca2+ indicator, fura-2, induced a rise in cytosolic Ca2+ concentration which was attenuated or absent in NaCl media compared with KCl, choline Cl, or NMG Cl media. In co...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90010-t
更新日期:1992-02-01 00:00:00
abstract::Restriction fragments isolated from a 17-kb rat genomic DNA clone containing the gene for apolipoprotein (apo) E were radiolabeled and used to screen a rat liver cDNA library. A cDNA clone hybridizing to a 6-kb genomic DNA fragment was isolated and the nucleotide sequence of the cDNA insert determined. The sequence wa...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90683-n
更新日期:1992-09-01 00:00:00
abstract::Three distinct acid phosphatases were recently reported in avian breast muscle [J. H. Baxter and C. H. Suelter (1984) Arch. Biochem. Biophys. 228, 397-406]. Of the increased acid phosphatase activity in dystrophic muscle compared to normal muscle, 84% can be accounted for as a low-molecular-weight, cytosolic form. Thi...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90808-2
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pub_type: 杂志文章
doi:10.1006/abbi.1998.1078
更新日期:1999-03-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/s0003-9861(03)00007-9
更新日期:2003-04-15 00:00:00
abstract::Studies have demonstrated that accumulation of mitochondrial tocopheroxyl radical, the primary oxidation product of alpha-tocopherol, accompanies rapid consumption of tocopherol. Enzyme-linked electron flow lowers both the steady-state concentration of the radical and the consumption of tocopherol. Reduction of tocoph...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90049-3
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.08.006
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journal_title:Archives of biochemistry and biophysics
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doi:10.1006/abbi.1996.0185
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2017.02.007
更新日期:2017-04-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/s0003-9861(02)00286-2
更新日期:2002-09-01 00:00:00
abstract::Deoxycholic acid, a colon tumor promoter, was found to bind covalently to DNA and RNA in the presence of methyl linoleate hydroperoxide and ferrous ion. This binding was shown to occur specifically with guanine residues and its covalent nature was demonstrated by analysis of hydrolysates of nucleic acid adducts. These...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90379-1
更新日期:1987-11-01 00:00:00
abstract::Cellular distribution in rat livers of the mannan-binding protein, a liver lectin specific for mannose and N-acetylglucosamine was investigated. Estimation of mannan binding activity of isolated cells demonstrated that more than 99% of the mannan binding activity recovered from whole livers was derived from hepatocyte...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90552-0
更新日期:1983-04-15 00:00:00
abstract::Much of what is known about the antioxidant mechanism of vitamin E has been learned from studies of lipid dispersions, solutions, or subcellular organelles. We have investigated the effect of vitamin E supplementation on intact live eucaryotic cells. L1210 murine leukemia cells were exposed to an oxidative stress indu...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0454
更新日期:1996-10-15 00:00:00
abstract::This work reports the first functional characterization of leishmanial PEPCK. The recombinant Leishmania major enzyme (Lmj_PEPCK) exhibits equivalent kcat values for the phosphoenolpyruvate (PEP) and oxaloacetate (OAA) forming reactions. The apparent Km towards OAA is 10-fold lower than that for PEP, while the Km valu...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2015.07.015
更新日期:2015-10-01 00:00:00
abstract::Solution characterization of heparin with high affinity (HA) and low affinity (LA) for antithrombin III was performed using the methods of small-angle x-ray scattering (SAXS), viscometry, and aqueous gel permeation chromatography (GPC). SAXS provided various topological parameters including the radius of gyration ([S2...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90597-7
更新日期:1986-06-01 00:00:00
abstract::A glucose analog, N-(bromoacetyl)-D-glucosamine (GlcNBrAc), previously used to label the glucose binding sites of rat muscle Type II and bovine brain Type I hexokinases, also inactivates rat brain hexokinase (ATP:D-hexose 6-phosphotransferase, EC 2.7.1.1) with pseudo-first-order kinetics. Inactivation occurs predomina...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90116-0
更新日期:1987-05-01 00:00:00
abstract::We evaluated the expression and activity of rat 12-lipoxygenase (LO) in rat intestinal epithelial (RIE) cells during apoptosis and cell differentiation. Sodium butyrate (NaBT) treatment induced wild-type RIE (W-RIE) cells to undergo differentiation and apoptosis. Alkaline phosphatase (ALP) activity, a marker of cell d...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1999.1284
更新日期:1999-08-01 00:00:00
abstract::Human lactase-phlorizin hydrolase [EC 3.2.1.23-3.2.1.62] is a disaccharidase located in the microvillus membrane of small intestinal epithelial cells. The enzyme is synthesized as a precursor protein in the endoplasmic reticulum and in addition to being glycosylated is subsequently proteolytically processed to the mat...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.9952
更新日期:1995-11-10 00:00:00
abstract::Several substrate analogs were tested for their ability to inhibit bovine pancreatic asparagine synthetase. Of the substrate analogs tested both 6-diazo-5-oxo-L-norleucine (DON) and 5-chloro-4-oxo-L-norvaline (CONV) were shown to inhibit the enzyme strongly. DON inhibited the glutaminase and glutamine-dependent aspara...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(91)90276-o
更新日期:1991-01-01 00:00:00