Abstract:
:Epoxidation and hydroxylation of arachidonic acid (AA) are both catalyzed by cytochromes P450s (CYPs). The oxidized metabolites are known to be involved in the regulation of vascular tone and renal function. By using a panel of 15 human recombinant CYPs, this study demonstrates that other polyunsaturated long-chain fatty acids (PUFA-LC), especially the omega3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are also epoxidised. The regioselectivity of epoxidation of four PUFA-LC by CYPs was investigated. Among the several CYPs tested, CYP2C9/2C19 and 1A2 were the most efficient in EPA and DHA epoxidations. It ensued that 10muM of these two omega3 fatty acids decreased by more than 80% and 60%, respectively, the formation by CYP2C9 of AA-epoxidised derivatives. These findings suggest that some physiological effects of omega3 fatty acids may be due to a shift in the generation of active epoxidised metabolites of AA through CYP-mediated catalysis.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Fer M,Dréano Y,Lucas D,Corcos L,Salaün JP,Berthou F,Amet Ydoi
10.1016/j.abb.2008.01.002subject
Has Abstractpub_date
2008-03-15 00:00:00pages
116-25issue
2eissn
0003-9861issn
1096-0384pii
S0003-9861(08)00004-0journal_volume
471pub_type
杂志文章abstract::The reactive cellular products generated during the peroxidation of membrane lipids have been implicated as causative agents in a variety of degenerative diseases and aging. In particular, 4-hydroxynon-2-enal (4HNE) is among the most of the produced during lipid peroxidation. In humans and rodent species, the alpha 4 ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2001.2352
更新日期:2001-06-01 00:00:00
abstract::Hypertension is one of the major causes of mortality. Though a host of drugs are available for the treatment of hypertension, majority have been linked to adverse side effects, necessitating the need for research into natural compounds with fewer side effects. Kaempferol-7-O-α-L-rhamnopyroside (KR) is a glycosylated f...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2019.04.001
更新日期:2019-05-30 00:00:00
abstract::Activity of the rat liver microsomal vitamin K-dependent carboxylase has been studied at various concentrations of detergent. The activity which could be solubilized by 0.25% Triton X-100 was low but could be greatly increased if vitamin K-deficient rats were given vitamin K a few minutes before they were killed. At h...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90519-2
更新日期:1983-04-01 00:00:00
abstract::Complementary peptides to interleukin-2 (IL-2) sequences important for receptor binding were tested for their ability to mimic natural receptors and act as inhibitors of the IL-2/p55 receptor subunit interaction. Peptides hydropathically complementary to IL-2 sequences 15-27 and 40-54 were synthesized in a linear and ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.1201
更新日期:1995-04-01 00:00:00
abstract::Free and endoplasmic reticulum-bound polyribosomes from rat heart were examined for their ferritin mRNA content. A procedure for separation and purification of the two ribosome populations that produced good yields of homogeneous mono- and polyribosomes with no contaminating ultrastructures and gave distinctive sedime...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90165-3
更新日期:1989-08-15 00:00:00
abstract::All six available lysine residues in bacteriorhodopsin were amidinated with dimethyl-3,3'-dithiobispropionimidate, which is a crosslinking agent. The photocycle was studied by measuring light absorption and electric signals. The data show an essential change in the photocycle: instead of single components, the rise of...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(88)90502-4
更新日期:1988-02-01 00:00:00
abstract::A role of cysteine residues in annexin II tetramer (AIIt)'s function was investigated using the sulfhydryl reagent N-ethylmaleimide (NEM). Incubation of AIIt with NEM resulted in a dose-dependent inhibition of AIIt-mediated liposome aggregation and loss of sulfhydryl groups of AIIt. The concentration effecting 50% inh...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1994
更新日期:2000-09-15 00:00:00
abstract::The key technique in proteome analysis is high-resolution two-dimensional (2D) electrophoretic separation of proteins from biological samples. This method combines isoelectric focusing (IEF) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Derivatization of protein carbonyls with 2, 4-dinitrop...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1999.1680
更新日期:2000-04-01 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::Two N-terminal fusion proteins combining Escherichia coli maltose-binding protein (MBP) and the 12-transmembrane-segment pBR322 tetracycline resistance protein (Tet) have been constructed to determine the strength and location of topology control signals within the N-terminal portion of the Tet protein. The fusions co...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.1487
更新日期:1995-10-01 00:00:00
abstract::In contrast to other P450 enzymes purified from rat liver microsomes, purified P450 IIIA1 (P450p) is catalytically inactive when reconstituted with NADPH-cytochrome P450 reductase and the synthetic lipid, dilauroylphosphatidylcholine. However, purified P450 IIIA1 catalyzes the oxidation of testosterone when reconstitu...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(91)90128-6
更新日期:1991-12-01 00:00:00
abstract::Previously, we established a method to detect subunit interactions of F1-ATPase by the yeast two-hybrid system (Moritani, C., et al. Biochim. Biophys. Acta 1274, 67-72, 1996). Here, we isolated mutants of the gamma subunits defective in interaction with the epsilon subunit by this new procedure to study the molecular ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0397
更新日期:1997-12-01 00:00:00
abstract::Prostaglandin endoperoxide H synthases-1 and -2 (PGHS-1 and -2) are integral membrane proteins associated with the luminal surface of the endoplasmic reticulum (ER) and the nuclear envelope (NE). The C-terminal sequences of PGHSs end in -Ser/Pro-Thr-Glu-Leu (-S/PTEL), a sequence similar to one of the known ER targetin...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0430
更新日期:1996-10-01 00:00:00
abstract::Sequence analyses of the C-terminal membrane intercalative region of the rat cytochrome b(5) indicated that this domain has, in addition to a signal sequence, a combined element of the classic stop-transfer sequence typically found in a variety of transmembrane proteins. Such bitopic protein arrangements arise by tand...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/s0003-9861(03)00051-1
更新日期:2003-04-15 00:00:00
abstract::The kinetics and thermodynamics of Ulex europeas agglutinin 1-H-antigenic determinant was studied by monitoring the binding of the lectin to H-antigenic fucolipid incorporated in liposomes tethered to the sensor surface by surface plasmon resonance. The second-order rate constants for the interactions are several orde...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1999.1594
更新日期:2000-02-01 00:00:00
abstract::The NCI-H69 cell alpha 1----3fucosyltransferase has been purified from a 0.2% Triton X-100R solubilized enzyme fraction by GDP-hexanolamine-Sepharose affinity chromatography and Superose 12 gel filtration. Photoaffinity labeling experiments with 125I-GDP-hexanolaminyl-4-azidosalicylic acid present in concentrations eq...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90611-y
更新日期:1992-08-01 00:00:00
abstract::Human NTPDase2 and chicken NTPDase8 are cell surface nucleotidases that contain two transmembrane domains (TMD) and five apyrase conserved regions (ACRs). ACR1 is located near the N-terminal TMD whereas ACR5 is located near the C-terminal TMD. The human NTPDase2 activity is decreased by low concentration of NP-40 and ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2008.02.011
更新日期:2008-04-15 00:00:00
abstract::Sphingosine kinase 1 (SphK1) responds to a variety of growth factor signals by increasing catalytic activity as it translocates to the plasma membrane (PM). Several studies have identified amino acids residues involved in translocation yet how SphK1 increases its catalytic activity remains to be elucidated. Herein, we...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2009.11.006
更新日期:2010-02-01 00:00:00
abstract::Human granzyme 3 (Gr3) is a serine protease contained in the granules of natural killer cells and cytotoxic T lymphocytes. To elucidate the biochemical and physiological characteristics of Gr3, we attempted to prepare an enzymatically active recombinant human Gr3 without refolding and proteolytic activation. An expres...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2005.12.001
更新日期:2006-02-01 00:00:00
abstract::I had the fortune to be introduced to Helmut Sies during the mid 1980s, while working as a post-doctoral scientist at the University of California, Berkeley. At that time, Helmut was a frequent visitor of the Bruce Ames' laboratory and a leading authority in antioxidants and oxidative stress. His concepts, ideas and w...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2015.11.021
更新日期:2016-04-01 00:00:00
abstract::Increased protein kinase C (PKC) activity is associated with heart failure, and can target multiple cardiac troponin I (cTnI) residues in myocytes, including S23/24, S43/45 and T144. In earlier studies, cTnI-S43D and/or -S45D augmented S23/24 and T144 phosphorylation, which suggested there is communication between clu...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2017.05.019
更新日期:2017-08-01 00:00:00
abstract::The effect of transition from a respiring to a respiration-inhibited state on the rate of protein synthesis was investigated in glycolyzing, cultured rat heart cells. The rate was found to be significantly lower after blocking respiration, and it was further decreased by L-lactate. In contrast, pyruvate or phenazine m...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90615-0
更新日期:1985-01-01 00:00:00
abstract::The effects of pH, NaCl, and malate2- on the equilibrium between dimeric and higher-molecular-weight forms of NAD malic enzyme from Solanum tuberosum var. Chieftain have been analyzed by monitoring the kinetic changes associated with disaggregation [S. D. Grover and R. T. Wedding (1982) Plant Physiol. 70, 1169-1172]. ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90288-1
更新日期:1984-11-01 00:00:00
abstract::To investigate the effect of elevation of liver glycogen synthase (GYS2) activity on glucose and glycogen metabolism, we performed adenoviral overexpression of the mutant GYS2 with six serine-to-alanine substitutions in rat primary hepatocytes. Cell-free assays demonstrated that the serine-to-alanine substitutions cau...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.08.006
更新日期:2007-10-15 00:00:00
abstract::Cellobiose dehydrogenase (CDH), an extracellular hemoflavoenzyme produced by the cellulose-degrading cultures of Phanerochaete chrysosporium, oxidizes cellobiose to cellobionolactone. CDH has been purified to homogeneity by a five-step purification procedure. The homogeneous CDH is monomeric and has a relative molecul...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1993.1098
更新日期:1993-02-01 00:00:00
abstract::Interactions between loops 2, 2' and 4, known as the loop bundle, stabilize the active site of caspase-3. Loop 4 (L4) is of particular interest due to its location between the active site and the dimer interface. We have disrupted a salt bridge between K242 and E246 at the base of L4 to determine its role in overall c...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2011.01.011
更新日期:2011-04-01 00:00:00
abstract::It has previously been found that there is a synergistic effect of free purine bases and low concentrations of dialyzed platelet extract on net synthesis of DNA in serum-starved fibroblast-like mouse L-cells. Experiments with a mutant line of L-cells that was deficient in hypoxanthine phosphoribosyl transferase (EC 2....
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90699-x
更新日期:1985-06-01 00:00:00
abstract::The various interactions of rat liver dihydrofolate reductase with two unconjugated 7,8-dihydropteridines, 7,8-dihydrobiopterin and 6-methyl-7,8-dihydropteridine, have been compared with those of 7,8-dihydrofolate and folate. Of particular interest was the reactivity demonstrated by 7,8-dihydrobiopterin because of the...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90674-5
更新日期:1985-02-01 00:00:00
abstract::Previous studies have shown that reactive oxygen species (ROS) enhance arachidonic acid (AA) release and the subsequent AA metabolism in macrophages. The purpose of this study was determined the implication of phospholipases A2 (PLA2s) in these events. Our results show that oxidative stress induced by exogenous adding...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2001.2439
更新日期:2001-08-15 00:00:00
abstract::The activities, properties, and steady-state kinetics of the five enzymes catalyzing the synthesis of 1-acyl- and 1-alkyl-sn-glycerol 3-phosphate in the cultured skin fibroblasts from Zellweger syndrome patients and normal controls were studied in detail. Judging from their Km and Vmax values, glycerol phosphate acylt...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90144-5
更新日期:1987-05-01 00:00:00