Abstract:
:The specific activity of cytochrome P450-linked coumarin 7-hydroxylase (COH) of hepatic mitoplasts from DBA/2N mice is up to 55% as great as the microsomal activity. According to Western blot and immunodiffusion analysis and inhibition studies with anti-P450Coh and metyrapone, the mitoplastic P450Coh had the same molecular weight and immunochemical and catalytic properties as the corresponding microsomal enzyme. The inducibility of the two proteins by pyrazole and their genetic regulation, as studied with DBA/2N and AKR/J mice, appears to be similar. However, the mitochondrial electron transfer system was not able to support the COH activity of reconstituted microsomal P450Coh although the enzyme was fully active with the microsomal NADPH-cytochrome P450 reductase. This indicates some differences between the two proteins with respect to their interaction with the electron transfer system. This was confirmed by the ability of anti-adrenodoxin reductase antibody to effectively inhibit the mitoplastic COH but not the COH reconstituted with purified microsomal P450Coh and NADPH-P450 reductase. We have previously found that P450Coh does not react with anti-P450b or anti-P450c antibodies, which recognize respective isoforms in rat liver mitoplasts. While P450Coh from microsomes and mitoplasts possess a number of properties in common, the mitoplast P450Coh represents a new subspecies of mitochondrial P450. Some characteristics of mitoplast P450Coh may be the result of post-translational modifications necessary for processing and translocation into the mitochondria.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Honkakoski P,Kojo A,Raunio H,Pasanen M,Juvonen R,Lang MAdoi
10.1016/0003-9861(88)90063-xsubject
Has Abstractpub_date
1988-12-01 00:00:00pages
558-67issue
2eissn
0003-9861issn
1096-0384pii
0003-9861(88)90063-Xjournal_volume
267pub_type
杂志文章abstract::The structure of rabbit muscle pyruvate kinase crystallized as a complex with Mg2+, K+, and L-phospholactate (L-P-lactate) has been solved and refined to 2.7 A resolution. The crystals, grown from solutions of polyethylene glycol 8000 at pH 7.5, belong to the space group P2(1) and have unit cell parameters a = 144.4 A...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0257
更新日期:1997-09-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1179
更新日期:1994-05-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:1990-10-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90180-x
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0512
更新日期:1998-03-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0959
更新日期:1999-01-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
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更新日期:2010-12-01 00:00:00
abstract::Serratia rubidaea (ATCC 27614) typifies a substantial number of enteric bacteria which, unlike Escherichia coli, possess a monofunctional species of chorismate mutase (denoted CM-F). CM-F coexists with two additional species of chorismate mutase, each of the latter being one catalytic domain of a bifunctional protein....
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90149-q
更新日期:1992-04-01 00:00:00
abstract::Experimental and computational studies suggest that few general principles govern protein/protein interactions and aggregation. The knowledge of these rules may be exploited to design peptides that are able to interfere with the self-assembly and aggregation of proteins. This work is aimed to verify the validity of th...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2004.12.006
更新日期:2005-03-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1753
更新日期:2000-04-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2014.07.023
更新日期:2014-12-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0394
更新日期:1998-01-01 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)90046-9
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.1993.1131
更新日期:1993-02-15 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(83)90177-7
更新日期:1983-03-01 00:00:00
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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
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:2005-02-15 00:00:00
abstract::Several plasma membrane phospholipids have been studied for their ability to modulate the activity of the plasma membrane H(+)-ATPase of Saccharomyces cerevisiae. We show here that phosphatidylinositol phosphate (PIP), phosphatidylinositol bisphosphate (PIP2), and/or the phosphatidylinositol and PIP kinases are locali...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90052-x
更新日期:1992-01-01 00:00:00
abstract::Flavopiridol has been shown to induce cell cycle arrest and apoptosis in various tumor cells in vitro and in vivo. Using immobilized flavopiridol, we identified glycogen phosphorylases (GP) from liver and brain as flavopiridol binding proteins from HeLa cell extract. Purified rabbit muscle GP also bound to the flavopi...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.2220
更新日期:2001-02-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.2244
更新日期:2001-03-15 00:00:00
abstract::TDP-43 is a nuclear protein whose abnormal aggregates are implicated in ALS and FTLD. Recently, an Asn/Gln rich C-terminal segment of TDP-43 has been shown to produce aggregation in vitro and reproduce most of the protein's pathological hallmarks in cells, but little is known about this segment's structure. Here, CD a...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2014.01.007
更新日期:2014-03-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:2016-07-01 00:00:00
abstract::The level of phosphorylation and activation of phosphofructokinase by serotonin (5-hydroxytryptamine) was studied in intact liver flukes Fasciola hepatica. The enzyme was immunoprecipitated with antiserum prepared against pure enzyme from the liver flukes. The resuspended immunoprecipitated enzyme retained most of its...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90307-x
更新日期:1989-06-01 00:00:00
abstract::An in vitro expression plasmid (pGRAP) that contained the cDNA coding for the rat mitochondrial aldehyde dehydrogenase precursor was constructed, mRNA was synthesized then translated, and the in vitro synthesized precursor of aldehyde dehydrogenase was used in an in vitro import assay. As expected the 19 amino acid si...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90238-5
更新日期:1989-08-01 00:00:00
abstract::alpha 1-Acid glycoprotein (alpha 1-AGP) is a glucocorticoid inducible gene product that is synthesized and secreted by certain rat hepatoma tissue culture (HTC) cell lines such as M1.54. Exposure to monensin, a Na+-K+ ionophore, causes a significant redistribution of alpha 1-AGP into two distinct fractions; immunoprec...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90491-1
更新日期:1986-04-01 00:00:00
abstract::In the absence of NADPH, the addition of an arachidonic acid hydroperoxide, 15-hydroperoxyeicosa-5,8,11,13-tetraenoic acid, to liver microsomes, prepared from phenobarbital-treated rats, resulted in the formation of two major metabolites and several minor products, some of which have been purified by reverse-phase hig...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90039-7
更新日期:1987-01-01 00:00:00
abstract::The allylamine class of antifungal compounds are specific inhibitors of squalene epoxidase (SE). However, depending on their chemical structure, allylamine derivatives can be highly selective for either fungal or mammalian SEs. All allylamines tested previously, irrespective of their selectivity, inhibit fungal SEs in...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.9908
更新日期:1997-04-15 00:00:00