Abstract:
:Low-density lipoprotein receptor-related protein (LRP)/alpha 2-macroglobulin receptor is a member of the low-density lipoprotein receptor family. It is known to bind a wide variety of unrelated ligands including alpha 2-macroglobulin-proteinase complexes, tissue plasminogen activator, apolipoprotein E-enriched very low density lipoprotein, lipoprotein lipase, and Pseudomonas exotoxin A. Receptor-associated protein (RAP), a protein which copurifies with LRP, can inhibit the binding and internalization of all known ligands to LRP. Recent studies have shown that some ligands can bind to more than one receptor in this family. However, the ability of low-density lipoprotein (LDL) to bind to LRP in addition to the LDL receptor has not been demonstrated consistently. In this study we demonstrate that LDL binds with high affinity to macrophage cell surface receptors at 4 degrees C (Kd = 1.8 nM) and competes for the binding of a receptor-recognized form of alpha 2-macroglobulin (alpha 2M*) (Ki = 3 nM). alpha 2M* and RAP can inhibit the binding of LDL to macrophages completely (96 and 100% inhibition, respectively), after cell surface heparin has been removed by treatment with heparinase. Using a solid-phase assay, we show that LDL binds specifically, saturably, and with high affinity to purified LRP (Kd = 5 nM). LDL can also completely inhibit the binding of alpha 2M* to purified LRP. These results indicate that LDL binds directly to LRP. The ability of LDL to cross-compete with alpha 2M* for binding to LRP suggests that LDL binds to a similar or overlapping site as alpha 2M*. In addition, the ability of alpha 2M* to inhibit most of the receptor-mediated binding of LDL to macrophages suggests that LDL receptors on murine peritoneal macrophages are predominantly LRP.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Wu SM,Pizzo SVdoi
10.1006/abbi.1996.0044subject
Has Abstractpub_date
1996-02-01 00:00:00pages
39-47issue
1eissn
0003-9861issn
1096-0384pii
S0003-9861(96)90044-2journal_volume
326pub_type
杂志文章abstract::Liver mitochondria were incubated through extended State 3-State 4 transitions (B. Chance and G. N. Williams (1955) J. Biol. Chem. 217, 409-423) in the presence of high concentrations of adenine nucleotides and in presence and absence of a protonophore. In the terminal phase of these transitions (the region of respira...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90391-3
更新日期:1989-12-01 00:00:00
abstract::The first evidence for the reductive metabolism of a noncyclic nitrosamine to the corresponding hydrazine derivative in vivo and in vitro is provided. Under anaerobic conditions, N-nitrosodiphenylamine was reduced by guinea pig liver 9000g supernatant to 1,1-diphenylhydrazine in the presence of 2-hydroxypyrimidine or ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90282-5
更新日期:1983-10-01 00:00:00
abstract::The amino acid L-lysine is synthesized in Saccharomyces cerevisiae via the α-aminoadipate pathway. An as yet unidentified PLP-containing aminotransferase is thought to catalyze the formation of α-aminoadipate from α-ketoadipate in the L-lysine biosynthetic pathway that could be the yeast Aro8 gene product. A screen of...
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更新日期:2011-12-01 00:00:00
abstract::To assess the indirect effects of snake venom metalloproteinases (SVMP) on host tissue local necrosis, we investigated the effect of the SVMP jararhagin on the gene expression profiles of human fibroblasts in vitro and mouse tissue in vivo. Two functional classes of up-regulated proteins, cell death and inflammatory d...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2005.06.007
更新日期:2005-09-01 00:00:00
abstract::Recent X-ray crystal structures of human cytochrome P450 2B6 and rabbit cytochrome P450 2B4 in complex with amlodipine showed two bound ligand molecules, one in the active site and one in the substrate access channel. Based on the X-ray crystal structures, we investigated the interactions of P450 2B4 and 2B6 with amlo...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:2014-03-01 00:00:00
abstract::The intrinsic fluorescence of potato tuber pyrophosphate:fructose-6-phosphate 1-phosphotransferase (PFP) was used as an indicator of conformational changes due to ligand binding. Binding of the substrates and the allosteric activator fructose-2,6-bisphosphate was quantitatively compared to their respective kinetic eff...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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abstract::Environmental pollution is a major cause of global mortality and burden of disease. All chemical pollution forms together may be responsible for up to 12 million annual excess deaths as estimated by the Lancet Commission on pollution and health as well as the World Health Organization. Ambient air pollution by particu...
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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更新日期:1986-09-01 00:00:00
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pub_type: 杂志文章
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更新日期:1985-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1006/abbi.2000.2055
更新日期:2000-11-15 00:00:00
abstract::Cytochrome P450 reductase was purified to homogeneity from cell suspension cultures of the opium poppy Papaver somniferum, the enzyme was characterized (K(m) cytochrome c, 8.3 microM; K(m) NADPH, 4.2 microM; pH optimum, 8.0; M(r), 80 kDa), and the amino acid sequence of internal peptides was determined. Partial cDNA c...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0374
更新日期:1997-12-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1995.1041
更新日期:1995-01-10 00:00:00
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pub_type: 杂志文章
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更新日期:1988-05-15 00:00:00
abstract::Lubrol-solubilized rabbit thrombomodulin has been examined by equilibrium sedimentation in buffers that include sufficient D2O to make the detergent neutrally buoyant. Data were acquired at rotor speeds from 12,000 to 28,000 rpm from two thrombomodulin preparations, at protein concentrations from 0.01 to 0.07%, and in...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:1989-02-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2008.10.024
更新日期:2009-01-01 00:00:00
abstract::Myeloperoxidase (MPO), eosinophil peroxidase, lactoperoxidase, and thyroid peroxidase are heme-containing oxidoreductases (EC 1.7.1.11), which bind ligands and/or undergo a series of redox reactions. Though sharing functional and structural homology, reflecting their phylogenetic origin, differences are observed regar...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1016/j.abb.2005.09.017
更新日期:2006-01-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.06.032
更新日期:2007-09-15 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(92)90499-m
更新日期:1992-05-15 00:00:00
abstract::The susceptibility of 40S and 60S ribosomal subunits from Saccharomyces cerevisiae to digestion with varying concentrations of trypsin was studied by two-dimensional electrophoresis and quantitative measurements of the protein remaining with the ribosomal particles after trypsin treatment. Proteins from both subunits ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90190-x
更新日期:1983-07-01 00:00:00
abstract::Two recombinant sesquiterpene synthases from grand fir, delta-selinene synthase and gamma-humulene synthase, each produce more than 30 sesquiterpene olefins from the acyclic precursor farnesyl diphosphate. These enzymes contain a pair of DDxxD motifs, on opposite lips of the presumptive active site, which are thought ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/S0003-9861(02)00068-1
更新日期:2002-06-01 00:00:00
abstract::An anti-avidin mAb, viz., H12G4, is shown to release bound biotin in a dose-dependent manner from holoavidin and holostreptavidin and inhibit the binding of ligand to the two apoproteins. The release of biotin by this mAb is accompanied by quenching of ligand-induced enhanced fluorescence of the FITC-avidin conjugate....
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1997.0196
更新日期:1997-08-15 00:00:00
abstract::A monoclonal antibody raised against rabbit liver cathepsin M binds to intact rabbit liver lysosomes. The binding is specific and is abolished by treating the lysosomes with trypsin, which has previously been shown to digest the membrane-bound cathepsin M [S. Pontremoli, E. Melloni, M. Michetti, F. Salamino, B. Sparat...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90625-8
更新日期:1984-08-15 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:2012-12-15 00:00:00
abstract::The unicellular marine phytoplankton Chattonella marina is known to have toxic effects against various living marine organisms, especially fishes. However, details of the mechanism of the toxicity of this plankton remain obscure. Here we demonstrate the generation of superoxide and hydroxyl radicals from a red tide un...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90133-h
更新日期:1992-04-01 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::The role of the conserved sequence motif 301DDLTDP306 in the F0F1 ATP synthase beta subunit was assessed by mutagenic analysis in the Escherichia coli enzyme. Mutations gave variable effects on F1 sector activity, stability, and membrane binding to the F0 sector. Upon solubilization, F1 sectors of the betaD302E and be...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0856
更新日期:1998-10-15 00:00:00
abstract::The importance of the sn-glycerol- 3-phosphate (G-3-P) electron transfer shuttle in hormonal regulation of gluconeogenesis was examined in hepatocytes from rats with decreased mitochondrial G-3-P dehydrogenase activity (thyroidectomized) or increased G-3-P dehydrogenase activity [triiodothyronine (T(3)) or dehydroepia...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1999.1668
更新日期:2000-03-01 00:00:00
abstract::The cDNA clone lambda ML-1 encoding one of the extracellular lignin peroxidases from the white rot fungus, Phanerochaete chrysosporium, was heterologously expressed in an active form using a recombinant baculovirus system. The glycosylated extracellular form of the recombinant protein contained the ferriprotoporphyrin...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(91)90148-c
更新日期:1991-12-01 00:00:00