Abstract:
:A new assay method for hydrogenase [EC 1.12.2.1] based on the enzymic electrode reaction of H2-H+ equilibrium has been established. The method is based on the experimental fact that the short-circuit current of the electric cell composed of an electrode with hydrogenase and methylviologen as the mediator of H2-H+ equilibrium and a saturated calomel electrode as the counter electrode, is practically proportional to the amount of hydrogenase in the cell. The new method is referred to as the "enzymic electric cell method." This technique has applications not only to routine activity assay but also to the direct determination of the time course of enzyme denaturation, which has not previously been possible.
journal_name
J Biochemjournal_title
Journal of biochemistryauthors
Yagi T,Goto M,Nakano K,Kimura K,Inokuchi Hdoi
10.1093/oxfordjournals.jbchem.a130927subject
Has Abstractpub_date
1975-09-01 00:00:00pages
443-54issue
3eissn
0021-924Xissn
1756-2651journal_volume
78pub_type
杂志文章abstract::The heavy chain of myosin subfragment-1 prepared by chymotrypsin treatment had a molecular weight of about 96 K. It was split into 26 K, 50K, and 21 K fragments on trypsin treatment. The effect of actin binding on the susceptibilities of the junctions between 26 K and 50 K and between 50 K and 21 K, and on that of alk...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132708
更新日期:1979-12-01 00:00:00
abstract::Inhibitory PAS domain protein (IPAS) is a dual function protein acting as a transcriptional repressor and as a pro-apoptotic protein. Simultaneous dual-color single-molecule imaging of EGFP-IPAS coexpressed with Mit-TagRFP-T in living HeLa cells revealed that fraction of EGFP-IPAS was arrested in the nucleus and on mi...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvw068
更新日期:2017-03-01 00:00:00
abstract::The amino acid sequences of human histones have been investigated for studies of histone evolution. The whole histone was prepared from human spleen and was separated into 3 fractions, H4+H3+H2A, H2B, and H1, by our technique of CM-cellulose chromatography. The H2B fraction was further purified by Bio-Gel P-60 chromat...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a132371
更新日期:1979-02-01 00:00:00
abstract::Chicken brain enolase was found to show multiple forms (I, II and III) separable by DEAE-cellulose column chromatography, whereas enolase from chicken skeletal muscle showed a single form. Brain enolase I, enolase III and muscle enolase were purified to electrophoretic homogeneity. These three isozymes were dimeric en...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135421
更新日期:1985-12-01 00:00:00
abstract::Raman spectroscopy was used to investigate the hydrogen bonding at the C(4)=O moiety of the isoalloxazine nucleus in a series of flavins and flavoproteins. Isotope effects of Raman bands confirmed that the band observed around 1,710 cm(-1) is mainly derived from C(4)=O stretching vibrational mode. A linear correlation...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021708
更新日期:1997-06-01 00:00:00
abstract::Comparative substrate specificities of farnesyl pyrophosphate synthetases I and II purified from larvae of silkworm, Bombyx mori, were studied by use of the possible biosynthetic intermediates of juvenile hormones in the insect. In the presence of Mn2+ ions farnesyl pyrophosphate synthetase II showed higher activity t...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135300
更新日期:1985-08-01 00:00:00
abstract::Sliding machines composed of F-actin and myosin or microtubules and kinesin or dynein convert the free energy of ATP hydrolysis into sliding movements and mechanical work. Development of optical microscopy with micromanipulation techniques has made possible direct observation of single events of sliding exhibited by s...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/jb/118.5.863
更新日期:1995-11-01 00:00:00
abstract::The circular dichroism (CD) and magnetic circular dichroism (MCD) spectra of horse heart metmyoglobin and the following derivatives were measured in the Soret and near ultraviolet regions: metmyoglobin and its peroxide compound, and hydroxide, cyanide, azide, and fluoride derivatives. The heme-related CD bands in the ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a130986
更新日期:1975-11-01 00:00:00
abstract::Deoxyhypusine synthase catalyzes the NAD+-dependent formation of deoxyhypusine in the eIF-5A precursor protein by transferring the 4-aminobutyl moiety of spermidine. This enzyme has recently been shown to be essential for cell viability and growth of yeast [Sasaki, K., Abid, M.R., and Miyazaki, M. (1996) FEBS Lett. 38...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021652
更新日期:1997-04-01 00:00:00
abstract::Connectin (titin) links the Z line to the myosin filament in sarcomeres of vertebrate skeletal muscle. An 800 kDa fragment of alpha-connectin runs from the Z line up to the N2 line region in the I band, and the following beta-connectin portion runs up to the edge of the M line on the myosin filament in chicken breast ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124711
更新日期:1995-01-01 00:00:00
abstract::Midkine (MK) is a product of a retinoic acid-responsive gene and a new heparin-binding growth/differentiation factor. The coding sequence of human MK was located on 1.5 kb DNA segment. The structure of the cloned human MK gene was determined and compared with that of the mouse gene. The coding sequence was divided int...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123797
更新日期:1992-05-01 00:00:00
abstract::The nicotinamide adenine dinucleotide (NADH)/nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and the xanthine oxidase (XOD) systems generate reactive oxygen species (ROS). In the present study, to characterize the difference between the two systems, the kinetics of ROS generated by both the NADH oxidase an...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvr051
更新日期:2011-08-01 00:00:00
abstract::The fatty acid composition of cardiolipin from the Harderian gland of guinea pig was examined by gas chromatography and gas chromatography-mass spectrometry. At least 33 kinds of fatty acids were detected. Oleic acid was the most prominent component, accounting for 18.2 mol% of the total fatty acids. About 70.2 mol% o...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134995
更新日期:1984-12-01 00:00:00
abstract::Glycoengineering of therapeutic proteins has been applied to improve the clinical efficacy of several therapeutics. Here, we examined the effect of glycosylation on the properties of the Fab of the therapeutic antibody, adalimumab. An N-glycosylation site was introduced at position 178 of the H-chain constant region o...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvaa116
更新日期:2020-10-27 00:00:00
abstract::ISG15 is a ubiquitin-like protein that is upregulated on treatment with interferon. ISG15 is considered to be covalently conjugated to cellular proteins through a sequential reaction similar to that of the ubiquitin conjugation system consisting of E1/E2/E3 enzymes: UBE1L and UbcH8 have been reported to function as E1...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvi172
更新日期:2005-12-01 00:00:00
abstract::The changes in the cellular concentrations of ATP, ADP, and AMP and in oxidative phosphorylation of mitochondria were investigated in the remaining liver of partially hepatectomized rabbits. The energy charge (defined as half of the average number of anhydride-bonded phosphate groups per adenosine moiety) of the liver...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131350
更新日期:1976-10-01 00:00:00
abstract::Long interspersed nuclear element (LINE) is known to be transposed by reverse transcription using its RNA transcript. Recognition of the 3' stem-loop of LINE RNA by its reverse transcriptase (RT) is an important step of the retrotransposition. Our previous study revealed that the second G residue (G8) in the GGAUA loo...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvx026
更新日期:2017-10-01 00:00:00
abstract::Autoactivation of the proenzyme form of a subunit of the first component (C1r) was performed in the presence and absence of diisopropyl fluorophosphate (DFP). The time-course of autoactivation of zymogen C1r followed a sigmoidal curve and was accelerated by addition of the enzyme C1r and by increasing the concentratio...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135062
更新日期:1985-01-01 00:00:00
abstract::To enhance the heat stability of the CutA1 protein from Escherichia coli (EcCutA1) so that it has comparable stability to CutA1 from Pyrococcus horikoshii with a denaturation temperature (T(d)) of 150°C, we used the Stability Profile of Mutant Protein (SPMP) to examine the structure-sequence (3D-1D) compatibility betw...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvq079
更新日期:2010-10-01 00:00:00
abstract::Neuronal migration is a crucial event in neuronal development for the construction of brain architecture and neuronal networks. Newborn neurons proliferate in the germinal zone and start migration toward their final destination. Migrating neurons adopt different routes, cell shapes and migratory modes depending on ext...
journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
doi:10.1093/jb/mvz012
更新日期:2019-05-01 00:00:00
abstract::A method for immobilizing oligosaccharides on a TLC plate for immunostaining has been developed. N-Glycolylneuraminic acid (NeuGc)-containing oligosaccharides derived from II3NeuGc-LacCer, IV3NeuGc-nLcOse4Cer, II3NeuGc-GgOse3Cer, and II3(NeuGc)2-LacCer by digestion with our newly isolated endoglycoceramidase (Ito, M. ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122053
更新日期:1987-08-01 00:00:00
abstract::Streptomyces caespitosus neutral protease (ScNP) is one of the smallest metalloproteinase with a molecular mass of 14 kDa. Effects of solvent composition on ScNP activity were examined using a peptide substrate. The k(cat)/K(m) values of ScNP exhibited bell-shaped pH-dependence with the optimal pH of 6.4-7.0 and the p...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvm134
更新日期:2007-09-01 00:00:00
abstract::The primary structure of human IGF-I, except for the disulfide bond system, has been reported by Rinderknecht and Humbel. IGF-I afforded the corresponding characteristic peptide fragment on V8 protease digestion, which contained Cys6, Cys47, Cys48, and Cys52. Two possible fragments, Type I with Cys6-Cys47 and Cys48-Cy...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122978
更新日期:1989-12-01 00:00:00
abstract::Thrombopoietin (TPO) is an important haematopoietic factor in megakaryocytic activities as well as in platelet production. Interleukin 6 (IL-6) can co-stimulate TPO-dependent formation of colony forming unit of megakaryocyte (CFU-Meg) growth which could be responsible for residual platelet formation in TPO-deficient o...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvm111
更新日期:2007-07-01 00:00:00
abstract::The yakC gene in Schizosaccharomyces pombe, which encodes yakC protein (YakC), a potential member of an aldo-keto reductase (AKR) family, was cloned and expressed in Escherichia coli cells. The recombinant YakC purified to homogeneity catalyzed the reduction of 2-nitrobenzaldehyde (k(cat), 44.1 s(-1), K(m), 0.185 +/- ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a003267
更新日期:2002-10-01 00:00:00
abstract::Heat-stable L-lactate dehydrogenase [EC 1.1.1.27] was purified from an extremely thermophilic bacterium belonging to the genus Thermus, and it showed an allosteric nature dependent on fructose 1,6-bisphosphate as an effector. The enzyme had a molecular weight of approximately 120,000 with a subunit molecular weight of...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133821
更新日期:1982-04-01 00:00:00
abstract::The TATA box-binding factor TFIID mediates transcriptional regulation through interactions with various regulatory factors and putative participation in reconfiguration of nucleosomes, utilizing its components, which include TATA box-binding protein (TBP) and TBP-associated factors (TAFs). Our and other previous studi...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021626
更新日期:1997-03-01 00:00:00
abstract::The role that interaction with laminin may play in Leishmania donovani infection was investigated. Binding of (125)I-radiolabeled laminin, in a liquid-phase assay, by the parasite was rapid, saturable, specific, reversible, and of high affinity. Using a Western blotting procedure, a 67 kDa laminin-binding protein (LBP...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a002953
更新日期:2001-07-01 00:00:00
abstract::We have previously reported that calpastatin, an endogenous inhibitory protein of calpain, is cleaved by a caspase-3-like protease during apoptosis in human Jurkat T cells [Kato, M. et al. (2000) J. Biochem. 127, 297-305]. In this study, we found that nonmuscle myosin heavy chain-A (NMHC-A) is cleaved during apoptosis...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvi015
更新日期:2005-02-01 00:00:00
abstract::A glutathione S-transferase isozyme which is absent in normal rat liver has been isolated from the hereditary hyperbilirubinuria rat liver cytosol. The enzyme was purified to apparent homogeneity by GSH-affinity chromatography and HPLC on CM-Sepharose CL-6B. It is a heterodimer of two non-identical subunits, i.e., sub...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123346
更新日期:1991-01-01 00:00:00