Abstract:
:Purification of equilibrative nucleoside transporters has been hampered by the functional instability of the detergent-solubilized proteins. A variety of nonionic detergents were compared with octylglucoside (the most commonly used detergent in this regard) for their abilities to solubilize functionally stable nucleoside transporter proteins from Ehrlich cell plasma membranes. Transporter stability was assessed through the binding of the specific probe [3H]nitrobenzylthioinosine to freshly solubilized and stored (48 h/6 degrees C) preparations. The most promising detergents were decylmaltoside and cyclohexylbutylmaltoside, both of which, like octylglucoside, solubilized over 70% of the transporters from the membrane. Decylmaltoside- and cyclohexylbutylmaltoside-solubilized transport proteins retained 61 and 83%, respectively, of their [3H]-nitrobenzylthioinosine binding activity upon storage, compared to about 30% using octylglucoside. Decylmaltoside was also superior to octylglucoside in its capacity to solubilize the transporter in a state that retained its high affinity for the transport inhibitors dilazep (Ki = 11 nM, vs 75 nM in octylglucoside) and dipyridamole (Ki = 260 nM, vs 12 microM in octylglucoside). Reconstitution studies indicated that both the decylmaltoside- and cyclohexylbutylmaltoside-solubilized transporters were capable of mediating the uptake of [3H]uridine. Decylmaltoside was superior to cyclohexylbutylmaltoside, however, in both the enhanced transport activity of the resulting proteoliposomes (Vi = 21 pmol/mg/s vs 13 pmol/mg/s, respectively) and the lower nonmediated uptake observed in the decylmaltoside-derived vesicles (27% of total uptake at 4 min incubation). Nevertheless, cyclohexylbutylmaltoside may be useful in initial solubilization procedures due to its ability to selectively solubilize the nucleoside transporter from the plasma membrane. The rational use of these detergents will enable a more extensive purification of functional nucleoside transporters.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Hammond JR,Zarenda Mdoi
10.1006/abbi.1996.0347subject
Has Abstractpub_date
1996-08-15 00:00:00pages
313-22issue
2eissn
0003-9861issn
1096-0384pii
S0003-9861(96)90347-1journal_volume
332pub_type
杂志文章abstract::Dopamine beta-hydroxylase present in the soluble matrix of bovine adrenal medullary chromaffin granules contains biantennary complex oligosaccharides and high-mannose oligosaccharides in a molar ratio of approximately 2:1. The high-mannose oligosaccharides contain an average of six mannose residues. The largest biante...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90009-2
更新日期:1984-02-01 00:00:00
abstract::Protein kinase CK2 of Candida albicans has been purified to near homogeneity by a procedure which involves chromatography on DEAE-cellulose, phosphocellulose, Q-Sepharose, and heparin-agarose. The purified enzyme has the characteristic properties of animal and yeast CK2, i.e., it utilizes ATP as well as GTP as phospha...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.9923
更新日期:1997-04-15 00:00:00
abstract::We have previously demonstrated that dietary fat, especially unsaturated fatty acids, induces cellular retinol-binding protein, type II (CRBPII) gene expression in rat jejunum. In the present study, we showed that feeding a high-fat diet caused parallel increases in jejunal CRBPII mRNA and CRBPII pre-mRNA levels. Nucl...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.1018
更新日期:1999-02-01 00:00:00
abstract::The oxidation of the heme iron of metmyoglobin by H2O2 yields an oxo ferryl complex (FeIV = O), similar to Compound II of peroxidases, as well as a protein radical; this high oxidation state of myoglobin is known as ferrylmyoglobin. The interaction of Trolox, a water-soluble vitamin E analog, with ferrylmyoglobin enta...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90279-6
更新日期:1992-12-01 00:00:00
abstract::Mitochondrial carbonic anhydrase has previously been quantitated in liver mitochondria; it was not detected in guinea pig kidney cortical mitochondria. Evidence of this enzyme in rat kidney cortical mitochondria is reported. Electron microscopy showed that intact mitochondria were free of other intracellular organelle...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(88)90457-2
更新日期:1988-01-01 00:00:00
abstract::Triosephosphate isomerase from rabbit has 5 Cys and 2 Met, while triosephosphate isomerase from yeast has 2 Cys (present in the rabbit enzyme in equivalent positions) and no Met. Since chloramine-T oxidizes Cys and Met, we determined the effect it has on the activity and structure of both enzymes. The activity of trio...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1395
更新日期:1994-09-01 00:00:00
abstract::Low-temperature plasma is useful for the care of wounded skin. It accelerates wound healing. However, the mechanism of this effect has not been fully elucidated yet. Galectin-1 is reported to accelerate wound healing via the Smad signaling pathway. In the present study to clarify whether or not galectins were expresse...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2016.01.012
更新日期:2016-09-01 00:00:00
abstract::The secondary structures of staphylococcal nuclease (SNase) have been assigned and semiquantitatively estimated from the deconvoluted Fourier transformed infrared (FTIR) spectrum. The changes in the secondary structures accompanying unfolding and refolding of SNase during reversible thermal denaturation up to 70 degre...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0151
更新日期:1996-04-01 00:00:00
abstract::Reductant-independent ATPase activity was initiated and studied for Azotobacter vinelandii and Clostridium pasteuranium nitrogenase proteins (Av1, Cp1 and Av2, Cp2, 1 designating the iron molybdenum protein and 2 the iron protein) and their heterologous crosses by two methods: (1) allowing dithionite to be depleted fr...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.9972
更新日期:1995-11-10 00:00:00
abstract::Periodate treatments of apo human serum transferrin (HST), and apo chicken ovotransferrin (COT) were previously reported to cause a rapid loss of Fe+3 binding capacity, with a loss of 3 to 5 tyrosine residues [P. AZARI AND J. L. PHILLIPS (1970) Arch. Biochem. Biophys. 138, 32-38; K. F. GEOGHEGAN, J. L. DALLAS, AND R. ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90085-1
更新日期:1983-09-01 00:00:00
abstract::With the concept of precision medicine, combining multiple molecular-targeting therapies has brought new approaches to current cancer treatments. Malfunction of the tumor suppressor protein, p53 is a universal hallmark in human cancers. Under normal conditions, p53 is degraded through an ubiquitin-proteosome pathway r...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2018.04.004
更新日期:2018-06-01 00:00:00
abstract::The radioactive, photoactivatable labeling probe [beta-32P]5-azidouridine 5'-diphosphoglucose has recently been shown to label a 62-kDa protein in crude homogenates and in partially purified enzyme preparations without photoactivation. Here, we report that a portion of this radioactivity is due to labeling of phosphog...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(90)90526-5
更新日期:1990-07-01 00:00:00
abstract::Cytosolic proteins may play an important role in the intracellular transport of bile acids in enterocytes. The lithocholate binding properties of cytosolic protein from bovine small intestine were studied. Lithocholate binding was observed in the Y (45-50 kDa), Y' (30-35 kDa), and Z fractions (10-15 kDa) following gel...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90439-4
更新日期:1992-11-01 00:00:00
abstract::The chemical structures of the carotenoid molecules are very simple and one might think that their electronic features are easily predicted. However, there is still has so much unknown information excepting the correlation between the electronic energy state and the length of effective conjugation chain of carotenoids...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2018.04.021
更新日期:2018-07-15 00:00:00
abstract::Arachidonate 12-lipoxygenase (12-LO) from porcine leukocytes was expressed in insect cells using a baculovirus expression vector. The recombinant 12-LO was expressed as an N-terminal fusion protein with a 31-amino acid polypeptide carrying a six-histidine tag and an enterokinase cleavage site. Maximal intracellular en...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1302
更新日期:1994-07-01 00:00:00
abstract::The effects of glycosylation on the stability and subunit interactions of vicilin, the major storage protein in pea seeds, were investigated. Glycosylated vicilin derivatives were prepared by alkylation of lysine epsilon-amino groups with various carbohydrates. Average modification levels of 13.4 +/- 3.0, 11.1 +/- 3.6...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.2024
更新日期:2000-10-15 00:00:00
abstract::The oxidation of quercetin by horseradish peroxidase/H(2)O(2) was studied in the absence but especially also in the presence of glutathione (GSH). HPLC analysis of the reaction products formed in the absence of GSH revealed formation of at least 20 different products, a result in line with other studies reporting the ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1832
更新日期:2000-06-15 00:00:00
abstract::Although life as we know it evolved in an aqueous medium, the properties of water are not completely understood. In this review, we focus on the role of water in guiding protein folding and stability. Specifically, we discuss the mechanisms of protein folding in an aqueous environment, the effects of water on the fold...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.07.007
更新日期:2008-01-01 00:00:00
abstract::New and stimulating results have challenged the concept that cellular senescence might not be synonymous with aging. It is indisputable that during aging, senescent cell accumulation has an impact on organismal health. Nevertheless, senescent cells are now known to display physiological roles during embryonic developm...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2016.04.004
更新日期:2016-05-15 00:00:00
abstract::Magnesium is involved in a wide range of biochemical reactions that are crucial to cell proliferation, differentiation, angiogenesis, and apoptosis. Changes in magnesium availability have been shown to influence biological responses of immuno-inflammatory cells. Equally plausible seems to be an involvement of magnesiu...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2006.02.016
更新日期:2007-02-01 00:00:00
abstract::Incubation of either Chlorella nitrate reductase or the recombinant flavin domain of spinach nitrate reductase with reagents specific for modification of cysteine residues, such as N-ethylmaleimide, resulted in a time-dependent inactivation of NADH:ferricyanide reductase activity which could be prevented by incubation...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0289
更新日期:1996-07-01 00:00:00
abstract::gamma-Synuclein is a small cytoplasmic protein implicated in neurodegenerative diseases and cancer. However, the mechanism of its involvement in diseases is not clear. We studied the role of gamma-synuclein in the regulation of matrix metalloproteinases in retinoblastoma cell culture. Matrix metalloproteinases play im...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/s0003-9861(02)00664-1
更新日期:2003-02-01 00:00:00
abstract::Nucleotide Binding Domains (NBDs) are responsible for the ATPase activity of the multidrug resistance protein 1 (MRP1). A series of NBD1-linker-NBD2 chimeric fusion proteins were constructed, expressed and purified, and their ATPase activities were analyzed. We report here that a GST linked NBD1(642-890)-GST-NBD2(1286...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2009.03.003
更新日期:2009-05-15 00:00:00
abstract::Barley α-amylase isozyme 1 (AMY1, EC 3.2.1.1) contains two surface binding sites, SBS1 and SBS2, involved in the degradation of starch granules. The distinct role of SBS1 and SBS2 remains to be fully understood. Mutational analysis of Tyr-380 situated at SBS2 previously revealed that Tyr-380 is required for binding of...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2012.08.005
更新日期:2012-12-01 00:00:00
abstract::A peptide containing 43 amino acid residues, rich in glutamic acid and lysine, was originally isolated from calf thymus and designated thymosin beta 4 [T.L.K. Low, S. -K. Hu, and A. L. Goldstein (1981) Proc. Nat. Acad. Sci. USA 78, 1162-1166]. However, thymosin beta 4 was also shown to be present in other tissues of r...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90177-7
更新日期:1983-03-01 00:00:00
abstract::Two peptides are specified when the noncoding DNA strand is read in the 5' to 3', or the 3' to 5' direction, and both peptides form strong complexes with the natural peptide, as found by J. E. Blalock and K. L. Bost with ACTH [1986) Biochem. J. 234, 679-683). We report here that strong hydropathic complementarity (pai...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90237-3
更新日期:1989-08-01 00:00:00
abstract::The polyglutamation kinetics of methotrexate (MTX) in MCF-7 human breast cancer cells have been formulated mathematically. The model takes account of glutamation and hydrolysis kinetics up through the pentaglutamate level, increased synthesis of dihydrofolate reductase following exposure to drug, reversible tight-bind...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90143-3
更新日期:1987-05-01 00:00:00
abstract::Alcohol oxidase (AO) is a peroxisomal, homo-octameric flavoenzyme, which catalyzes methanol oxidation in methylotrophic yeast. Here, we report on the generation of soluble, FAD-lacking AO monomers. Using steady-state fluorescence, fluorescence correlation spectroscopy, circular dichroism and static light scattering ap...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.01.005
更新日期:2007-03-15 00:00:00
abstract::2,4-Dinitrophenol (DNPOH) and carbonylcyanide p-trifluoromethoxyphenylhydrazone (FCCP), two classical uncouplers of mitochondrial oxidative phosphorylation, were found to stimulate human erythrocyte membrane vesicle ATPase activity. Both compounds competed with S-(2,4-dinitrophenyl)glutathione (DNPSG) for activation o...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1406
更新日期:1994-10-01 00:00:00
abstract::A cDNA was cloned from Ruta graveolens cells encoding a novel O-methyltransferase (OMT) with high similarity to orcinol or chavicol/eugenol OMTs, but containing a serine-rich N-terminus and a 13 amino acid insertion between motifs IV and V. Expression in Escherichia coli revealed S-adenosyl-l-methionine-dependent OMT ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2005.05.026
更新日期:2005-08-01 00:00:00