Abstract:
:A spectrofluorometric method for sensitive determination of metalloendopeptidase activity has been developed by using a bimane-peptide containing a tryptophan residue, i.e. 1,7-dioxo-2,5,6-trimethyl-1H,7H-pyrazolo[1,2-alpha]pyrazol-3-yl-methyl- thiomethylcarbonyl-phenylalanyl-tryptophanyl-leucine (Bim-SCH2CO-Phe-Trp-Leu-OH). Such an "intramolecularly quenched" substrate was originally designed for a sensitive assay of angiotensin I converting enzyme (ACE) [Sato, E. et al. (1989) Chem. Pharm. Bull. 37, 145-147]. All the typical metalloendopeptidases tested, such as thermolysin, Pseudomonas aeruginosa (Ps.) elastase, Streptomyces griseus metalloendopeptidases I and II (SGMPI and SGMPII), and alkinonase A, a metalloendopeptidase from Streptomyces violaceorectus, cleaved this substrate strictly at a Phe-Trp bond, leading to a marked increase in fluorescence. Kinetic parameters of the enzymatic hydrolyses of five kinds of analogous bimane substrates were compared to examine how the nature of neighboring amino acid residues on either side of the cleavable bond affects the catalytic efficiency of each of the metalloendopeptidases. Bim-SCH2CO-Phe-Trp-Leu-OH was most efficiently hydrolyzed by all of these enzymes. The use of this substrate made it possible to determine minute amounts of metalloendopeptidases, especially those originating from Streptomycetes (for example, as little as 10 fmol of SGMPII).
journal_name
J Biochemjournal_title
Journal of biochemistryauthors
Kajiwara K,Kumazaki T,Sato E,Kanaoka Y,Ishii Sdoi
10.1093/oxfordjournals.jbchem.a123583subject
Has Abstractpub_date
1991-09-01 00:00:00pages
345-9issue
3eissn
0021-924Xissn
1756-2651journal_volume
110pub_type
杂志文章abstract::Proteins in the brush border membrane (BBM) of the midgut binding to the insecticidal Cry1Ac toxin from Bacillus thuringiensis were investigated to examine the lower sensitivity of Bombyx mori to Cry1Ac, and new aminopeptidase N that bound to Cry1Ac was discovered. DEAE chromatography of Triton X-100-soluble BBM prote...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvj024
更新日期:2006-02-01 00:00:00
abstract::The biosynthesis of elongation factor Tu (EF-Tu) has been studied in a cell-free system with DNA of the transducing phage lambdarifd18 as a template. It was found that the synthesis of EF-Tu in this system was inhibited by about 60% in the presence of 0.3 to 0.6 mM guanosine-5'-diphosphate-3'-diphosphate (ppGpp). The ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132539
更新日期:1979-08-01 00:00:00
abstract::Pure bovine rhodopsin pellets were prepared by removal of cholic acid from rhodopsin-cholic acid complex, and X-ray diffraction patterns from the internal structure of rhodopsin were obtained for the first time using wet and dry pellet samples. The peaks at around 10 and 4.3 A spacings observed for both samples can be...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021254
更新日期:1996-03-01 00:00:00
abstract::Aleuria aurantia lectin (AAL) is a protein composed of two identical subunits having no carbohydrate chain and shows sugar-binding specificity for L-fucose. Full-length cDNA encoding for the lectin has been isolated from a lambda gt11 library, screened with an antiserum directed against AAL. The cDNA clone contained 1...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123024
更新日期:1990-02-01 00:00:00
abstract::A beta-galactosidase was extracted from the internal organs of a sea squirt, Styela plicata, and purified 959-fold, with an 18% yield, by successive gel chromatography, anion-exchange chromatography, chromatofocusing, and affinity chromatography on a Con A-Sepharose column. The purified enzyme was fairly homogeneous, ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1991-07-01 00:00:00
abstract::We evaluated the role of cytosolic phospholipase A2 (PLA2) in the exocytosis of amylase from parotid acinar cells. The exocytosis stimulated by isoproterenol was dose-dependently inhibited by bromoenol lactone (BEL), a potent suicide inhibitor of Ca2+-independent cytosolic PLA2. The IC50 value of BEL was approximately...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021688
更新日期:1997-06-01 00:00:00
abstract::Detergent treatments were examined for their efficacy in purifying trimethylamine-N-oxide (TMAO) demethylase activity from fish muscle microsomes. Tritons X-100 and X-45, deoxycholate, Brijs, Tweens 20, 65, and 80, and SDS were generally ineffective in solubilizing demethylase activity from this membrane fraction, at ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a121709
更新日期:1986-07-01 00:00:00
abstract::A simple and rapid method has been developed for the separation of apolipoproteins in high density lipoprotein (HDL) fractions by high performance liquid chromatography (HPLC) with gel permeation columns (G3000SW TSK GEL). The HPLC pattern monitored by A280 for a mixed solution of the HDL fraction (10 microliter) and ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134395
更新日期:1983-08-01 00:00:00
abstract::Previous studies have shown that purified mitochondrial outer membrane is able to catalyze the transfer of sialic acid from CMP-Neu5Ac to an exogenous asialoglycoprotein acceptor, asialofetuin. Considering the heterogeneity of the glycan chains borne by this glycoprotein, an investigation of mitochondrial sialyltransf...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123644
更新日期:1991-11-01 00:00:00
abstract::NADP+-specific isocitrate dehydrogenase was found in several tissues of the pupa of the silkworm, Bombyx mori. This enzyme was highly purified from the whole bodies of pupae. This is the first isolation of the enzyme from insect materials. The purified enzyme gave a single protein band on polyacrylamide gel electropho...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1977-08-01 00:00:00
abstract::Hydrostatic pressure-induced morphological and physiochemical changes in monomeric myosin were investigated. The turbidity of a myosin solution increased after release of pressure, indicating aggregation of the molecules. Some molecules were single headed after exposure to 100-200 MPa, in contrast with an intact molec...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124496
更新日期:1994-07-01 00:00:00
abstract::OsCnfU-1A is a chloroplast-type Nfu-like protein that consists of tandem repeats sharing high sequence homology. Domain I of this protein, but not domain II, has a C-X-X-C motif that is thought to assemble an iron-sulphur cluster. Herein we report the solution structure of OsCnfU-1A domain I (73-153). Although OsCnfU-...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvm120
更新日期:2007-07-01 00:00:00
abstract::The dissociation of porcine erythrocyte catalase [EC 1.11.1.6] into subunits on denaturation with alkali, GuHCl and urea was investigated by following the changes in hydrodynamic properties, absorption and CD spectra in the Soret region and inactivation of the enzyme. It was found that dissociation proceeded in an "al...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134252
更新日期:1983-04-01 00:00:00
abstract::The complete amino acid sequence of ribonuclease N1 (RNase N1), a guanine-specific ribonuclease from a fungus, Neurospora crassa, was determined by conventional protein sequencing, using peptide fragments obtained by tryptic digestion of cyanogen bromide-treated RNase N1 and by Staphylococcus aureus V8 protease digest...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122476
更新日期:1988-09-01 00:00:00
abstract::The complement system is a classic central player in innate immunity. Most pathogens activate both complement and the toll-like receptor (TLR) pathway. Therefore, to provide a more comprehensive understanding of innate immunity, it is important to understand the crosstalk between these two systems. Mouse macrophages p...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvq136
更新日期:2011-03-01 00:00:00
abstract::The immunological properties of gamma-glutamyltransferases (gamma-GTs) from human serum, liver and tonsil were studied by using a monospecific antibody to human kidney gamma-GT for the purpose of elucidating their isozymic relationships. gamma-GTs partially purified from liver and tonsil were indistinguishable in this...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133258
更新日期:1981-03-01 00:00:00
abstract::Methylation and demethylation of the methyl-accepting chemotaxis protein (MCP) was studied in vitro. The in vitro MCP methylating system showed the following characteristics. 1. Multiple bands of methylated MCP were produced. 2. The reaction could be separated into two phases: the initial phase, in which the level of ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133945
更新日期:1982-08-01 00:00:00
abstract::In the rat, DNA carrying a cluster of the genes for tRNAAsp, tRNAGly, and tRNAGlu, aligned in that order, is repeated about 10 times. Seven DNA clones corresponding to the independent repeating units were isolated from a rat gene library. Nucleotide sequence analysis of these clones revealed the presence of a fourth t...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135230
更新日期:1985-06-01 00:00:00
abstract::The phospholipid mediator, platelet activating factor (PAF: 1-O-alkyl-2-O-acetyl-sn-glycero-3-phosphocholine), was recently reported to activate macrophage-monocyte cells as well as neutrophils or platelets. PAF was incorporated into dipalmitoylphosphatidylcholine-cholesterol liposomes, and their effect on guinea pig ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135172
更新日期:1985-04-01 00:00:00
abstract::Four motor proteins, MotX, MotY, PomA, and PomB, have been identified as constituents of the Na(+)-driven flagellum of Vibrio species. In this study, the complete motX gene was cloned from Vibrio alginolyticus and shown to complement three mot mutations, motX94, motX115, and motX119, as well as a V. parahaemolyticus m...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a003061
更新日期:2001-12-01 00:00:00
abstract::The expression of the human SREBP-2 gene is transcriptionally regulated in a cooperative manner by sterol regulatory element-binding proteins (SREBPs) and the general transcription factor NF-Y [Sato, R., Inoue, J., Kawabe, Y., Kodama, T., Takano, T., and Maeda, M. (1996) J. Biol. Chem. 271, 26461-26464]. To understand...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022060
更新日期:1998-06-01 00:00:00
abstract::Chorismate mutase of Brevibacterium flavum, a common enzyme in phenylalanine and tyrosine biosynthesis, was separted into two different component, A and B, with molecular weights of 250,000 and 25,000, respectively, by ammonium sulfate fractionation or gel-filtration. Both components were essential for the enzymatic a...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:
更新日期:1979-07-01 00:00:00
abstract::In order to obtain information on the nature of the amino acid residues involved in the activity of ribonuclease U1 [EC 3.1.4.8], various chemical modifications of the enzyme were carried out. RNase U1 was inactivated by reaction with iodoacetate at pH 5.5 with concomitant incorporation of 1 carboxymethyl group per mo...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131544
更新日期:1977-04-01 00:00:00
abstract::Two-dimensional gel electrophoresis using 0.5% agarose gel in the 1st dimension and 2-12% gradient polyacrylamide gel in the 2nd dimension succeeded in the isoelectrical focusing of connectin, a giant myofibrillar protein of approximately 3,000 kDa. Immunoblotting with an anti-connectin monoclonal antibody, SM1-36-2, ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123232
更新日期:1990-10-01 00:00:00
abstract::Glycerol-treated muscle fiber bundles were fixed at their rest length in 50 mM KC1, 2 mM MgC1(2), and 10 micron CaC1(2) at pH 7.8 and 0 degrees C in the presence of sufficient amounts of ATP, creatine kinase, and creatine phosphate. The fiber bundles were stretched linearly with time for 0.3 s at a constant amplitude,...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132186
更新日期:1978-10-01 00:00:00
abstract::The functions of the helix E (W97-F105), an amphiphilic lumenal 310 helix of the major antenna of photosystem II (LHCII), are still unidentified. To elucidate the roles of individual amino acid residue of the helix E, alanine scanning mutagenesis has been performed to mutate every residue of this domain to alanine. Th...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvu028
更新日期:2014-10-01 00:00:00
abstract::The three-dimensional structure of cytochrome c-553 isolated from sulfate-reducing bacterium, Desulfovibrio vulgaris Miyazaki F strain, has been determined by the multi-wavelength anomalous dispersion technique with use of synchrotron radiation. The result shows that bacterial S-class cytochromes c have a variety of f...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123267
更新日期:1990-11-01 00:00:00
abstract::The beta peptide (113-125), derived from a conserved sequence of the beta subunit of integrins, was synthesized to investigate its adhesive properties to matrix proteins and the effects on cell adhesion to immobilized fibronectin. In this study, we observed that the biotinylated beta peptide was able to bind efficient...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021680
更新日期:1997-05-01 00:00:00
abstract::Inositol 1,4,5-trisphosphate (InsP3) releases Ca2+ from the non-mitochondrial Ca2+ store site of various types of cells. To study the mechanisms of the Ca2+ release from the store site, the effect of InsP3 on the passive Ca2+ release and influx, and the active Ca2+ uptake in the presence of oxalate, was examined using...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135214
更新日期:1985-06-01 00:00:00
abstract::The readthrough of premature termination codon (PTC) by ribosome sometimes produces full-length proteins. We previously reported a readthrough of PTC of glycosyltransferase gene B4GALNT1 with hereditary spastic paraplegia (HSP). Here we featured the readthrough of B4GALNT1 of two mutants, M4 and M2 with PTC by immunob...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvaa041
更新日期:2020-08-01 00:00:00