Abstract:
:To obtain information on the role of iron-catalyzed lipid peroxidation in the presence of the small amount of lipid peroxide in deterioration of biological membranes, we examined factors affecting peroxidation of fatty acids in charged micelles. Peroxidation of linoleic acid (LA) was catalyzed by Fe2+ via reductive cleavage of linoleic acid hydroperoxide (LOOH) in negatively charged sodium dodecyl sulfate micelles, but not in positively charged tetradecyltrimethylammonium bromide (TTAB) micelles. However, this Fe2(+)-induced, LOOH-dependent lipid peroxidation could be induced in TTAB micelles in the presence of a negatively charged iron chelator, nitrilotriacetic acid (NTA). The linoleic acid alkoxy radical (LO.) generated by the LOOH-dependent Fenton reaction was also trapped by N-t-butyl-alpha-phenylnitrone at the surface of TTAB micelles in the presence of NTA, but not in its absence. The degradation rates of two spin probes, N-oxyl-4,4'-dimethyloxazolidine derivatives of stearic acid (5-NS and 16-NS), were investigated to determine the site of production of radicals formed during LOOH-dependent lipid peroxidation. The rate of consumption of 16-NS during the LOOH-dependent Fenton-like reaction was higher in TTAB micelles containing LA than in those containing lauric acid (LauA), although the rates of formation of LO. in the two types of fatty acid micelles were similar. The rates of 5-NS consumption in LA and LauA micelles were almost the same and were as low as that of 16-NS consumption in LauA micelles. 16-NS was more inhibitory than 5-NS of LOOH-dependent lipid peroxidation, and this inhibition was associated with its higher consumption of 16-NS than of 5-NS. alpha-Tocopherol inhibited NTA-Fe2(+)-induced LOOH-dependent lipid peroxidation in TTAB micelles, and was oxidized during this inhibition process. The rate and amount of alpha-tocopherol oxidized by the LOOH-dependent Fenton reaction were higher in LA micelles than in LauA micelles. alpha-Tocopherol inhibited the consumption of 16-NS during NTA-Fe2(+)-induced LOOH-dependent lipid peroxidation more effectively than that of 5-NS. The distribution of the chromanol moiety of alpha-tocopherol was studied by the fluorescence quenching method. There was no difference between Stern-Volmer plots of the quenchings of alpha-tocopherol fluorescence by 5-NS and 16-NS. From these results, we discuss the mechanism of induction of LOOH-dependent peroxidation of LA and the mechanism of the antioxidant effects of alpha-tocopherol on it from the viewpoint of site-specific reaction.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Fujii T,Hiramoto Y,Terao J,Fukuzawa Kdoi
10.1016/0003-9861(91)90273-lsubject
Has Abstractpub_date
1991-01-01 00:00:00pages
120-6issue
1eissn
0003-9861issn
1096-0384pii
0003-9861(91)90273-Ljournal_volume
284pub_type
杂志文章abstract::The NADH-dependent microsomal electron transfer system consists of NADH-cytochrome b5 reductase and cytochrome b5, which donates reducing equivalents to fatty acyl desaturase, cytochrome P450, and other reactions. A study was carried out to investigate the interaction of NADH with several ferric complexes and to evalu...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.0041
更新日期:1995-12-20 00:00:00
abstract::Polycation binding to the negatively charged surface of chloroplast thylakoid membranes is known to cause an inhibition of photosystem I activity. It also interferes with the cation-dependent rearrangement of chlorophyll proteins in the thylakoid membrane. It was shown that added anions prevented or reversed the inhib...
journal_title:Archives of biochemistry and biophysics
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更新日期:1983-04-01 00:00:00
abstract::Hypertrophic scars are dermal fibrosis diseases that protrude from the surface of the skin and irregularly extend to the periphery, seriously affecting the appearance and limb function of the patient. In this study, we found that microRNA-130a (miR-130a) was increased in hypertrophic scar tissues and derived primary f...
journal_title:Archives of biochemistry and biophysics
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abstract::A solution hybridization assay employing specific synthetic oligodeoxynucleotide probes was developed to study the regulation of intestinal calbindin-D28K mRNA. The technique is rapid and quantitative and eliminates the need for sample transfer, blotting, autoradiography, and densitometry. Following validation of the ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(90)90630-h
更新日期:1990-11-15 00:00:00
abstract::Glucosylsphingosine is a potent inhibitor of lysosomal glucocerebrosidase and the broad-specificity, cytosolic beta-glucosidase of human liver. In the present study, it was demonstrated that the broad-specificity beta-glucosidase was also inhibited by galactosylsphingosine. The inhibition was observed when the enzyme ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90672-1
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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::Spinach chloroplast NAD(P)-glyceraldehyde-3-phosphate dehydrogenase (NAD(P)-GAPDH; EC, 1.2.1.13) was purified as the 600-kDa oligomer of low specific activity. Incubation of the enzyme with either a reductant or a 1,3-bisphosphoglycerate (1,3bisPGA) generating system, but most effectively with both, resulted in an inc...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.0031
更新日期:1995-12-20 00:00:00
abstract::Previously, we reported that several charged amino acids located in the alpha1-beta4 loop of the iron-sulfur protein are required to maintain the stability of the protein and its assembly into the cytochrome bc1 complex. The current study extends this analysis to several amino acids localized in the single alpha-helix...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0894
更新日期:1998-11-01 00:00:00
abstract::A gold(III) compound [Au(C^N^C)(IMe)]CF(3)SO(3) (Gold III) has been reported to have anticancer properties as it is able to reduce topoisomerase IB activity in vitro and suppress tumor growth in nude mice model. Here we have investigated the mechanism of inhibition of human topoisomerase IB activity by this compound, ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2011.10.008
更新日期:2011-12-15 00:00:00
abstract::A new method for normal mode analysis is reported for all-atom structures using molecular geometry restraints (MGR). Similar to common molecular mechanics force fields, the MGR potential contains short- and long-range terms. The short-range terms are defined by molecular geometry, i.e., bond lengths, angles and dihedr...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2010.12.031
更新日期:2011-04-01 00:00:00
abstract::A marine snail digestive phospholipase A2 (mSDPL) was purified from delipidated hepatopancreas. Unlike known digestive phospholipases A2, which are 14 kDa proteins, the purified mSDPL has a molecular mass of about 30 kDa. It has a specific activity of about 180 U/mg measured at 50 degrees C and pH 8.5 using phosphatid...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2009.11.020
更新日期:2010-02-15 00:00:00
abstract::The three cysteine residues per subunit of pig muscle phosphoglucose isomerase show different reactivities toward various sulfhydryl reagents. The organomercurial, p-mercuribenzoate, can titrate two of the sulfhydryl groups under nondenaturing conditions. 2,2'-Dithiodipyridine, 5,5'-dithiobis(2-nitrobenzoic acid), iod...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90805-7
更新日期:1985-05-15 00:00:00
abstract::The dietary flavan-3-ol (-)-epicatechin improves the bioactivity of nitric oxide in arterial vessels in vivo. Moreover, it effectively protects cultured vascular endothelial cells from signs of oxidative stress and elevates intracellular nitric oxide in vitro. We addressed the effects of (-)-epicatechin, its metabolic...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.10.012
更新日期:2008-01-15 00:00:00
abstract::Sulfotyrosyl peptides corresponding to the known high-affinity substrate phosphotyrosyl peptide sequences in casein and the autophosphorylation sites of insulin receptor and EGF receptor were investigated as inhibitors of protein tyrosine phosphatases PTP1B and CD45. These peptides inhibit both PTP1B and CD45 in the m...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0691
更新日期:1998-06-15 00:00:00
abstract::The L chain of the iron storage protein ferritin contains more putative nucleation sites in the core (Glu53, 56, 57, 60, and 63) than does the H chain (Glu61, 64, and 67). Recombinant DNA techniques were used to investigate the role of these putative nucleation sites on iron loading by ceruloplasmin and on the stabili...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0523
更新日期:1998-02-15 00:00:00
abstract::Uridine phosphorylase is one of the critical enzymes in the pyrimidine salvage pathway. Cells regenerate uridine for nucleotide metabolism by incorporating uracil with ribose-1-phosphate with this enzyme. Recent studies indicate that Escherichia coli uridine phosphorylase is destabilized in the presence of ATP. Howeve...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2017.09.007
更新日期:2017-11-15 00:00:00
abstract::The reaction of phospholipid hydroperoxide glutathione peroxidase (PHGPx) and Ebselen with phospholipid and cholesterylester hydroperoxides associated with HDLox and LDLox was investigated using specific HPLC assays for the hydroperoxides of phosphatidylcholine (PCOOH) and cholesteryllinolate (Ch18:2-OOH) and for chol...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1105
更新日期:1994-03-01 00:00:00
abstract::Caffeic acid O-methyltransferase (COMT) is one of a group of proteins present in alfalfa cell cultures which can be photoaffinity labeled with S-adenosyl-L-[methyl-3H]methionine. The enzyme was purified to homogeneity from elicitor-treated suspension cultures and shown to exist as an active monomer of subunit Mr 41,00...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(91)90492-2
更新日期:1991-06-01 00:00:00
abstract::A cDNA that encodes the human plasminogen (HPg) amino acid sequence has been inserted adjacent to the polyhedrin promoter in the genome of the baculovirus, Autographa californica nuclear polyhedrosis virus, which was then used to infect cultured cells of the farm armyworm, Spodoptera frugiperda. Under the conditions o...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90288-9
更新日期:1989-06-01 00:00:00
abstract::Sulfhydryl-specific reagents were used to study the reactivities and function of the four cysteinyl residues per subunit present in Salmonella typhimurium 5-phosphoribosyl-alpha-1-pyrophosphate (PRPP) synthetase. In the presence of high concentrations of denaturants all four cysteinyl residues reacted with sulfhydryl-...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(90)90746-l
更新日期:1990-02-01 00:00:00
abstract::Histone-DNA templates for bacteriophage T7 RNA polymerase were assembled from a plasmid containing a promoter and a terminator for this polymerase, (H3 x H4)2 tetramers deprived of their tail domains, and H2A x H2B dimers. Histone (H3 x H4)2 tetramers lacking their terminal domains were obtained from trypsin-digested ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0850
更新日期:1998-10-01 00:00:00
abstract::A large number of mutations affecting the F(0) sector of Escherichia coli F(1)F(0) ATP synthase have been constructed and characterized. A subset of the missense mutations resulted in fully assembled enzyme complexes blocked in proton translocation and displaying marked decreases in ATP hydrolysis activity. The cataly...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1916
更新日期:2000-08-01 00:00:00
abstract::Ca2+-regulation of cardiac contractility is mediated through the troponin complex, which comprises three subunits: cTnC, cTnI, and cTnT. As intracellular [Ca2+] increases, cTnI reduces its binding interactions with actin to primarily interact with cTnC, thereby enabling contraction. A portion of this regulatory switch...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2017.09.017
更新日期:2017-11-15 00:00:00
abstract::Quantitative estimation of cytosolic Ca2+- and phospholipid-dependent protein kinase (PKC) activity was performed by polyacrylamide gel electrophoresis under nondenaturating conditions (PAGE). With this method less than 50 micrograms of cytosol protein can be accurately quantitated for PKC activity. The amount of cyto...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90816-1
更新日期:1985-05-15 00:00:00
abstract::Phosphoenolpyruvate (PEP) carboxylase is regulated by reversible phosphorylation in higher plants. Recently several genes encoding PEP carboxylase kinase have been cloned. The purpose of this article is to assess the contribution that information on the structure and expression of these genes is making to our understa...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/s0003-9861(03)00115-2
更新日期:2003-06-15 00:00:00
abstract::Oxalate oxidase (E.C. 1.2.3.4) catalyzes the oxygen-dependent oxidation of oxalate to carbon dioxide in a reaction that is coupled with the formation of hydrogen peroxide. Although there is currently no structural information available for oxalate oxidase from Ceriporiopsis subvermispora (CsOxOx), sequence data and ho...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2011.02.022
更新日期:2011-05-01 00:00:00
abstract::cDNA clones encoding NADP(+)-glyceraldehyde-3-phosphate dehydrogenase (NADP(+)-GAPDH) and sedoheptulose-1,7-bisphosphatase (SBPase) were isolated and characterized from halotolerant Chlamydomonas sp. W80 (C. W80) cells. The cDNA clone for NADP(+)-GAPDH encoded 369 amino acid residues, preceded by the chloroplast trans...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2001.2375
更新日期:2001-06-15 00:00:00
abstract::Diquat is a hepatotoxin whose toxicity in vivo and in vitro is mediated by redox cycling and greatly enhanced by pretreatment with 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU), an inhibitor of glutathione reductase. The mechanism by which redox cycling mediates diquat cytotoxicity is unclear, however. Here, we have att...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90466-8
更新日期:1987-11-15 00:00:00
abstract::Liver cells (HepG2 and primary hepatocytes) overexpressing CYP2E1 and exposed to arachidonic acid (AA) were previously shown to lose viability together with enhanced lipid peroxidation. These events were blocked in cells pre-incubated with antioxidants (alpha-tocopherol, glutathione ethyl ester), or in HepG2 cells not...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2006.10.018
更新日期:2007-01-15 00:00:00
abstract::Several experiments were carried out to study the difference between two isozymes (alpha(+) and alpha) of (Na+ + K+)-ATPase in the conformational equilibrium. Rat brain (Na+ + K+)-ATPase was much more thermolabile than the kidney enzyme. Both enzymes were protected from heat inactivation not only by Na+ and K+, but al...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(88)90643-1
更新日期:1988-06-01 00:00:00