Abstract：
:The major phenobarbital-inducible form of cytochrome P-450 (cytochrome P-450 PB) was purified to homogeneity from rat liver microsomes and rabbit antibodies prepared against the purified enzyme. Using these antibodies, an enzyme-linked immunosorbent assay (ELISA) was developed for the detection of cytochrome P-450 PB in microsomes which was sensitive at the nanogram level. The content of cytochrome P-450 PB was determined in hepatic microsomes from rats treated with various xenobiotics. Phenobarbital and Aroclor 1254 pretreatments resulted in several-fold increases in immunoreactive cytochrome P-450 PB over control levels. ELISA measurements of cytochrome P-450 PB were also carried out over a 48-h time course of phenobarbital induction in liver microsomes. Significant increases over control levels were seen at 16 h and beyond. Measurements of ELISA-detectable cytochrome P-450 PB were made in microsomes following the administration of CCl4 to phenobarbital-pretreated rats. Immunoreactive cytochrome P-450 PB was observed to decrease less rapidly than the spectrally detectable enzyme in the microsomal membranes. Inhibition of heme synthesis was carried out by the administration of 3-amino-1,2,4-triazole (AT) to rats. Concomitant pretreatment with phenobarbital and AT resulted in levels of ELISA-detectable cytochrome P-450 PB which were significantly increased over control levels, while spectrally detectable levels of total holoenzyme remained unchanged. These results support the idea that this cytochrome P-450 may exist, at least partly, in the microsomal membrane in an inactive or apoprotein form.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Seidel SL,Shawver LK,Shires TKdoi
10.1016/0003-9861(84)90183-8subject
Has Abstractpub_date
1984-03-01 00:00:00pages
519-31issue
2eissn
0003-9861issn
1096-0384pii
0003-9861(84)90183-8journal_volume
229pub_type
杂志文章abstract：:Just 25 years ago the Anfinsen thermodynamic hypothesis was shown to be valid for membrane proteins. Despite the complex biological machinery required for their in vivo assembly and in face of the chemically heterogeneous, anisotropic nature of their biological lipid bilayer "solvent", the evidence continues to sugges...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章,评审
doi：10.1016/j.abb.2007.09.024
更新日期：2008-01-01 00:00:00
abstract：:Under physiological conditions the uptake of transferrin-bound iron by reticulocytes involves transferrin binding to membrane receptors followed by endocytosis, release of iron from the transferrin within endosomes, and recycling of apotransferrin to the cell surface. However, as shown in the present work, iron uptake...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1006/abbi.1994.1045
更新日期：1994-01-01 00:00:00
abstract：:The ability of nine phospholipids to alter the activity of low-Km cyclic AMP phosphodiesterase was examined in microsomal fractions of rat adipocytes. The enzyme was activated by phosphatidylserine (21% at 300 microM) and phosphatidylglycerol (36% at 300 microM). The activation was concentration dependent over the ran...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(83)90015-2
更新日期：1983-08-01 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：:This study systematically examined the characteristics of specific binding of adult diferric transferrin to its receptor using a Triton X-100 solubilized preparation from human placentas as the receptor source. The following information was obtained. The ionic strength for maximal binding is in the range of 0.1-0.3 M ...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(83)90005-x
更新日期：1983-08-01 00:00:00
abstract：:Cellular glutathione is released during apoptosis and may play a role in the regulation of the mitochondrial permeability transition pore. The question of whether only cytosolic glutathione is important in apoptosis, or whether mitochondrial glutathione also plays a role, was investigated using gamma-glutamyltranspept...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1006/abbi.2001.2662
更新日期：2002-01-15 00:00:00
abstract：:Aspartate aminotransferase (AspAT) isozymes from Eleusine coracana (an NAD-malic enzyme type C4 plant) were examined. Three groups of isoenzymes were identified (AspAT-1, AspAT-2, and AspAT-3). AspAT-1 (localized in the mesophyll cells) and AspAT-3 (localized in the bundle sheath cells), both of which are considered t...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(90)90139-p
更新日期：1990-11-01 00:00:00
abstract：:Orotate phosphoribosyltranferase (OPRTase) catalyzes the formation of orotidine 5'-monophosphate from the nitrogenous base orotate and alpha-D-5-phosphoribosyl-1-pyrophosphate (PRPP). While it is known that Mg2+ is necessary for catalysis, the mechanism of activation of the phosphoribosyl transfer by Mg2+ remains uncl...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1006/abbi.1993.1290
更新日期：1993-06-01 00:00:00
abstract：:We have recently reported that GDP-bound Rab27a regulates endocytosis of the insulin secretory membrane via its binding to coronin 3, an actin-binding protein. The aim of this study was to examine the participation of actin assembly in the Rab27a-dependent regulation of endocytosis using a pancreatic beta cell line, M...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/j.abb.2010.01.017
更新日期：2010-04-01 00:00:00
abstract：:Chromatium vinosum contains a polypeptide that is functionally and structurally similar to the Escherichia coli chaperonin 10. The protein has been purified to homogeneity by sucrose density gradient centrifugation followed by gel filtration using a Bio-Gel A-1.5 m column. The molecular mass of chaperonin 10, as deter...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(92)90503-o
更新日期：1992-05-15 00:00:00
abstract：:Phenylalanine ammonia-lyase forms trans-cinnamate from L-phenylalanine, and thus stands at a gateway to secondary metabolism in higher plants. L-alpha-Amino-oxy-beta-phenylpropanoic acid (L-AOPP), a very effective competitive inhibitor of this enzyme, is most probably a transition-state analog for the elimination reac...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(84)90265-0
更新日期：1984-11-15 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：:The role of sarcoplasmic reticulum (SR) in malignant hyperthermia (MH) was studied using the heavy microsomal fraction prepared from semitendinosus muscles of both normal and genetically MH-susceptible pigs. In the presence of ATP, SR was loaded with 70 nmol Ca2+/mg SR protein. Under these conditions, MH-SR demonstrat...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(86)90587-4
更新日期：1986-06-01 00:00:00
abstract：:Assembly of the cellulosome, a large, extracellular cellulase complex, depends upon docking of a myriad of enzymatic subunits to homologous receptors, or cohesin domains, arranged in tandem along a noncatalytic scaffolding protein. Docking to the cohesin domains is mediated by a highly conserved domain, dockerin (DS),...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1006/abbi.2000.1882
更新日期：2000-07-15 00:00:00
abstract：:Renally excreted 8-oxo-7,8-dihydro-2(')-deoxyguanosine (oxo(8)dG) is a potential marker of oxidative DNA damage by reactive oxygen species. Whole-body degradation rates of t- and rRNA are potential indicators of the resting metabolic rate (RMR). Excretion rates of oxo(8)dG and degradation rates of t- and rRNA were det...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/S0003-9861(02)00034-6
更新日期：2002-06-01 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：:Western blots using a polyclonal and a monoclonal antibody raised against rat liver cytochrome P-450b indicate tissue-specific expression of low levels of cytochrome P-450's b and e. P-450b and P-450e were expressed very selectively in, respectively, lung and adrenal microsomes of untreated rats but neither isozyme wa...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(87)90374-2
更新日期：1987-11-01 00:00:00
abstract：:Non-enveloped viruses require membrane-penetrating peptides for gaining entry inside the cytoplasm of host cells during the early stages of infection. Although several such peptides have been identified as essential components for non-enveloped virus entry, the molecular mechanism of membrane destabilization by these ...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/j.abb.2019.108188
更新日期：2019-12-15 00:00:00
abstract：:By anion-exchange chromatography, the nitrogen fixing photosynthetic stem nodules and nonphotosynthetic root nodules of Sesbania rostrata are shown to contain the same seven major components of leghemoglobin (Lb), numbered LbI-LbVII in order of elution, although in different proportions. No novel component was found i...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(87)90102-0
更新日期：1987-04-01 00:00:00
abstract：:An anionic peroxidase (EC 1.11.1.7), thought to be involved in suberization, was purified 110-fold from wound-healing slices of Solanum tuberosum by a combination of ammonium sulfate fractionation, Sephadex G-100 gel filtration, isoelectric focusing, and phenyl-Sepharose CL-4B chromatography in 24% yield. The purified...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(85)90060-8
更新日期：1985-08-01 00:00:00
abstract：:Ringer's lactate solution irradiated by non-thermal plasma, comprised of radicals, electrons, and ions, is defined as plasma-activated lactate (PAL). PAL exhibited antitumor effects in glioblastoma U251SP cells, which we termed PAL-specific regulated cell death. In contrast to the oxidative stress condition typical of...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/j.abb.2020.108414
更新日期：2020-07-30 00:00:00
abstract：:The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that functions as an intracellular mediator in the xenobiotic signaling pathway. Although a number of studies have examined AhR-mediated CYP1A1 induction in detail, recent studies of AhR-null mice have revealed that AhR plays important regu...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章,评审
doi：10.1016/j.abb.2007.03.038
更新日期：2007-08-15 00:00:00
abstract：:Subcutaneous implantation of demineralized bone matrix in rats induces migration of host cells into the site and results in the sequential development of cartilage and bone. The biosynthesis and metabolic fate of proteoglycans in the plaques at the bone matrix implantation site were investigated by [35S]sulfate labeli...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(86)90551-5
更新日期：1986-05-15 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：:Human sorcin, M(r) 22-kDa/pI 5.3, was identified in HOB1 lymphoma cells resistant to 1.0 microM vincristine and polyclonal antibody against it was produced. Using antibody to precipitate sorcin from 32P-labeled cell extract, the SDS-PAGE-resolved human sorcin was not phosphorylated in contrast to the report of A. M. v...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1006/abbi.1996.0027
更新日期：1996-01-15 00:00:00
abstract：:In the biosynthetic conversion of glutamate to the tetrapyrrole precursor, delta-aminolevulinic acid (ALA), glutamate is activated at C-1 by glutamyl-tRNA synthetase-catalyzed ligation to tRNAGlu. Glutamyl-tRNA reductase next catalyzes reduction of the activated glutamate to glutamate-1-semialdehyde (GSA), which is th...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1006/abbi.1994.1300
更新日期：1994-07-01 00:00:00
abstract：:This study characterizes the structural and functional significance of sulfhydryl residues in human plasma heparin cofactor II (HCII). For quantification of sulfhydryl groups, the extinction coefficient of HCII was redetermined and found to be 0.593 ml mg-1 cm-1 using second-derivative spectroscopy and multicomponent ...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(87)90499-1
更新日期：1987-12-01 00:00:00
abstract：:Glucosamine-6-phosphate deaminase (EC 5.3.1.10) from dog kidney cortex was purified to homogeneity, as judged by several criteria of purity. The purification procedure was based on two biospecific affinity chromatography steps, one of them using N-epsilon-amino-n-hexanoyl-D-glucosamine-6-phosphate agarose, an immobili...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(92)90664-i
更新日期：1992-09-01 00:00:00
abstract：:Diphtheria toxin (DT) induces the leakage of dipalmitoylphosphatidic acid (DPPA) membranes but not neutral dipalmitoylphosphatidylcholine (DPPC) membranes. Cholesterol incorporated into liposomes enhances the membrane leakage induced by DT in acidic DPPA membranes but not in neutral DPPC membranes. Membrane leakage wa...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/0003-9861(84)90317-5
更新日期：1984-10-01 00:00:00
abstract：:The cellular environment is crowded with different kinds of molecules with varying sizes, shapes and compositions. Most of the experiments studying the nature and behaviour of a protein have been done on the isolated protein in dilute buffer solutions which actually do not imitate the in vivo situation. To understand ...
journal_title：Archives of biochemistry and biophysics
pub_type： 杂志文章
doi：10.1016/j.abb.2015.08.015
更新日期：2015-10-15 00:00:00
