Bacillus subtilis degSU operon is regulated by the ClpXP-Spx regulated proteolysis system.

abstract：:Pyruvate decarboxylase [2-oxo acid carboxy-lyase, EC 4.1.1.1] was isolated from sweet potato roots and was partially purified from healthy and diseased tissues. There was no appreciable difference in properties between the enzymes from healthy and diseased tissues. The molecular weight of the enzyme was found to be 24...

journal_title：Journal of biochemistry

authors： Oba K,Uritani I

更新日期：1975-06-01 00:00:00

abstract：:The epitopes of about 100 monoclonal antibodies against human type II DNA topoisomerase were mapped along the enzyme molecules. Although they were randomly and independently established, epitope sites were unevenly distributed the toward N-terminal or C-terminal region. We suggest that the central catalytic domain is ...

journal_title：Journal of biochemistry

authors： Sakaguchi A,Miyaike M,Kuroda K,Nozaki N,Tanaka M,Hibino M,Fujii Y,Kato S,Kikuchi A

更新日期：2002-09-01 00:00:00

abstract：:Methioninase of Pseudomonas putida was purified to homogeneity, as judged by polyacrylamide gel electrophoresis, with a specific activity 270-fold higher than that of the crude extract. 1. The purified enzyme had an S20,w of 8.37, a molecular weight of 160,000, and an isoelectric point of 5.6. 2. A break in the Arrhen...

journal_title：Journal of biochemistry

authors： Ito S,Nakamura T,Eguchi Y

更新日期：1976-06-01 00:00:00

abstract：:We characterized the taurine transport system in human intestinal Caco-2 cells and showed that it is subject to adaptive regulation. The activity of taurine transport in Caco-2 cells was evaluated by means of an Na+- and Cl(-)-dependent high-affinity transport system, the characteristics of which were similar to those...

journal_title：Journal of biochemistry

authors： Satsu H,Watanabe H,Arai S,Shimizu M

更新日期：1997-06-01 00:00:00

abstract：:Knockout mice lacking glycosyltransferases or sulfotransferases provide unequivocal evidence that the carbohydrate moieties of glycoproteins, glycolipids, and proteoglycans play essential roles in various biological phenomena such as development, the immune response, and tissue functions. Examples of abnormalities of ...

journal_title：Journal of biochemistry

authors： Muramatsu T

更新日期：2000-02-01 00:00:00

abstract：:The regulation of neutral cytosolic cholesterol ester hydrolase was studied in isolated rat liver cells. Addition of glucagon to cell suspensions caused a decrease in the enzyme activity which was significant at 1 nM concentration. The cyclic nucleotide analogue bibutyryl cyclic AMP (10 and 100 microM) also inhibited ...

journal_title：Journal of biochemistry

authors： Ruiz MB,Ochoa B,Lacort M

更新日期：1990-03-01 00:00:00

abstract：:The effects of freezing on Alcaligenes sp. nitrite reductase [nitric-oxide: ferricytochrome c oxidoreductase, EC 1.7.2.1] dissolved in sodium phosphate (pH 7.2) were investigated. The nitrite reductase was gradually activated with time in the frozen state, resulting in an increase in its activity of 2.5-4.5 times. The...

journal_title：Journal of biochemistry

authors： Masuko M,Iwasaki H,Sakurai T,Suzuki S,Nakahara A

更新日期：1985-11-01 00:00:00

abstract：:The effects of pH on the thermodynamic properties of the proton-translocating cyclic electron transfer system in a purple photosynthetic bacterium Chromatium vinosum were studied. Two thermodynamic parameters, the flux (Je) and force (deltamue) of the electron transfer process, were analyzed. The rate of electron tran...

journal_title：Journal of biochemistry

authors： Arata H,Nishimura M

更新日期：1979-02-01 00:00:00

abstract：:The experimental conditions for release of the regulatory light chain (RLC) of scallop myosin at 30 degrees C were studied. Substantially all RLC was released from myosin by incubation for 5 min in medium containing buffer and KCl. This release of RLC was inhibited strongly by Ca2+, while the effect of Mg2+ was about ...

journal_title：Journal of biochemistry

authors： Asakawa T,Azuma N

更新日期：1983-08-01 00:00:00

abstract：:To investigate the role of carboxyl groups of glucoamylases [EC 3.2.1.3] from a Rhizopus sp. (Gluc1 and Gluc2), the modification of Gluc1 and Gluc2 with a water-soluble carbodiimide, 1-cyclohexyl-3-(2-morpholinyl-(4)-ethyl)carbodiimide metho-p-toluenesulfonate (CMC), was studied. The inactivation of Gluc1 proceeded wi...

journal_title：Journal of biochemistry

authors： Iwama M,Ohtsuki R,Takahashi T,Irie M

更新日期：1984-08-01 00:00:00

abstract：:Leukotriene B4 (LTB4) is a potent inflammatory mediator derived from arachidonic acid. Two G protein-coupled receptors for LTB4 have been identified: a high-affinity receptor, BLT1, and a low-affinity receptor, BLT2. Both receptors mainly couple to pertussis toxin-sensitive Gi-like G proteins and induce cell migration...

journal_title：Journal of biochemistry

authors： Yokomizo T

更新日期：2015-02-01 00:00:00

abstract：:Activation-induced cell death (AICD) plays a critical role in the maintenance of homeostasis and peripheral tolerance in the immune system, and is mediated by Fas ligand (FasL) expression and the interaction between Fas and FasL. In the present study, we examined the role of the ubiquitin-proteasome system in AICD usi...

journal_title：Journal of biochemistry

authors： Tanimoto Y,Kizaki H

更新日期：2002-03-01 00:00:00

abstract：:When nuclei isolated from rat liver in a low salt buffer were washed with 0.1 M NaCl solution, the supernatant showed a deoxyribonuclease (DNase) activity. The activity required Mg2+ and in addition spermine or spermidine, and its optimal pH was 7.2-7.4. The activity was higher on denatured (single stranded) DNA than ...

journal_title：Journal of biochemistry

authors： Nakano T,Tsuboi M

更新日期：1976-12-01 00:00:00

abstract：:The conditions for the preparation of the ferricytochrome a-ferrocytochrome a3-carbon monoxide complex (a3+, a3(2)+CO) of cytochrome oxidase [EC 1.9.3.1] by the ferricyanide-reoxidation method and some properties of the prepared complex were studied. The addition of a small volume of concentrated ferricyanide solution...

journal_title：Journal of biochemistry

authors： Horie S,Watanabe T,Ave K

更新日期：1983-04-01 00:00:00

abstract：:d-Aspartate is found in the nervous and reproductive system and participates in various physiological roles. While several lines of evidence suggest that this amino acid has an endogenous origin, the enzyme responsible for mammalian d-Asp biosynthesis has not yet been identified. We show that mammalian serine racemase...

journal_title：Journal of biochemistry

authors： Ito T,Hayashida M,Kobayashi S,Muto N,Hayashi A,Yoshimura T,Mori H

更新日期：2016-12-01 00:00:00

abstract：:We studied enzymatic activities in sea urchin egg extracts that phosphorylate myosin regulatory light chain (MRLC) from chicken gizzard smooth muscle. The activity in the presence of EGTA showed cell cycle-dependent changes similar to that of histone H1 kinase, namely, it peaked shortly before cleavage, while that in ...

journal_title：Journal of biochemistry

authors： Mishima M,Mabuchi I

更新日期：1996-05-01 00:00:00

abstract：:Partial amino acid sequences of two mitochondrial cytochrome P-450's, P-450 (SCC) and P-450 (11 beta), and two microsomal cytochrome P-450's, P-450 (C-21), and P-450 (17 alpha, Lyase), from adrenal cortex were analyzed and compared. Mitochondrial P-450's and microsomal P-450's were different in the amino acid sequence...

journal_title：Journal of biochemistry

authors： Ogishima T,Okada Y,Kominami S,Takemori S,Omura T

更新日期：1983-11-01 00:00:00

abstract：:Ovomucoid-trypsin association complex was prepared by incubating chicken egg white ovomucoid with bovine trypsin. The reactivity of ovomucoid-trypsin complex was investigated by immunodiffusion, quantitative precipitation and enzyme-linked immunosorbent assay (ELISA). It was demonstrated that the association of trypsi...

journal_title：Journal of biochemistry

authors： Matsuda T,Watanabe K,Nakamura R

更新日期：1983-07-01 00:00:00

abstract：:The fluorometric method of Nash for determination of methanol was applied in assay of kallikrein-like arginine esterases using N-a-tosyl-L-arginine methyl ester (TAME) as substrate. The results obtained using this method corresponded well with those obtained in the usual colorimetric methods using hydroxamate, chromot...

journal_title：Journal of biochemistry

authors： Matsuda Y,Moriya H,Moriwaki C,Fujimoto Y,Matsuda M

更新日期：1976-06-01 00:00:00

abstract：:Molecular cloning of the gene and the crystal structure of the prolyl aminopeptidase [EC 3.4.11.5] from Serratia marcescens have been studied by us [J. Biochem. 122, 601-605 (1997); ibid. 126, 559-565 (1999)]. Through these studies, Phe139, Tyr149, Glu204, and Arg136 were estimated to be concerned with substrate recog...

journal_title：Journal of biochemistry

authors： Ito K,Inoue T,Kabashima T,Kanada N,Huang HS,Ma X,Azmi N,Azab E,Yoshimoto T

更新日期：2000-10-01 00:00:00

abstract：:Ornithine transcarbamylase (OTC) is one of the urea cycle enzymes. While the chicken is a uricotelic animal, it has measurable OTC activity in its kidney. OTC activity is highly variable within and between chicken breeds. Chicken OTC may have some physiological significance because of its significant activity in the k...

journal_title：Journal of biochemistry

authors： Shimogiri T,Kono M,Mannen H,Mizutani M,Tsuji S

更新日期：1998-11-01 00:00:00

abstract：:1. When ribonuclease T1 [EC 3.1.4.8] (0.125% solution) was treated with a 760-fold molar excess of iodoacetamide at pH 8.0 and 37 degrees, about 90% of the original activity was lost in 24 hr. The half-life of the activity was about 8 hr. The binding ability for 3'-GMP was lost simultaneously. Changes were detected on...

journal_title：Journal of biochemistry

authors： Takahashi K

更新日期：1976-12-01 00:00:00

abstract：:Cell metabolism can be considered as a process of serial construction and destruction of cellular components, both of which must be regulated accurately. In eukaryotic cells, a variety of cellular components are actively delivered into lysosomes/vacuoles, specialized compartments for hydrolysis of macromolecules. Such...

journal_title：Journal of biochemistry

authors： Fujiwara Y,Wada K,Kabuta T

更新日期：2017-02-01 00:00:00

abstract：:RPE65 is a membrane-associated retinoid isomerase involved in the visual cycle responsible for sustaining vision. Many mutations in the human RPE65 gene are associated with distinct forms of retinal degenerative diseases. The pathogenic mechanisms for most of these mutations remain poorly understood. Here, we show tha...

journal_title：Journal of biochemistry

authors： Li S,Hu J,Jin RJ,Aiyar A,Jacobson SG,Bok D,Jin M

更新日期：2015-08-01 00:00:00

abstract：:Mammalian/mechanistic target of rapamycin (mTOR) is a highly conserved serine/threonine kinase that responds to environmental determinants such as growth factor concentration, nutrient availability, energy sufficiency and stress. mTOR forms two different complexes, called mTOR complex 1 (mTORC1) and mTORC2, and these ...

journal_title：Journal of biochemistry

authors： Hoshii T,Matsuda S,Hirao A

更新日期：2014-08-01 00:00:00

abstract：:Oxidative activity of 9-anthraldehyde (9-AA) to 9-anthracenecarboxylic acid in monkey liver was mainly located in microsomes. The reaction required NADPH as an essential cofactor and was significantly inhibited by SKF 525-A, metyrapone, disulfiram, and CO, potent inhibitors of microsomal aldehyde oxygenase (MALDO). Tw...

journal_title：Journal of biochemistry

authors： Matsunaga T,Iwawaki Y,Watanabe K,Yamamoto I,Kageyama T,Yoshimura H

更新日期：1996-04-01 00:00:00

abstract：:A post-proline cleaving enzyme [prolyl endopeptidase, EC 3.4.21.26] was purified about 3,700-fold from an extract of bovine brain by a series of column chromatographies on DEAE-Sephadex, hydroxyapatite and PCMB-T-Sepharose, and gel filtration on Sephadex G-200 using N-carbobenzoxy-Gly-Pro-beta-naphthylamide (Z-Gly-Pro...

journal_title：Journal of biochemistry

authors： Yoshimoto T,Nishimura T,Kita T,Tsuru D

更新日期：1983-10-01 00:00:00

abstract：:The effects of intra- and extravesicular calcium and magnesium ions on the hydrolysis of the phosphoenzyme (EP) intermediate formed in the reaction of Ca2+,Mg2+-dependent ATPase of the sarcoplasmic reticulum were investigated. The rate constants of EP hydrolysis were measured under conditions that allowed a single tur...

journal_title：Journal of biochemistry

authors： Daiho T,Takisawa H,Yamamoto T

更新日期：1985-02-01 00:00:00

abstract：:Monoclonal antibodies for human thrombomodulin, a cofactor for thrombin-catalyzed activation of protein C, were prepared and their epitopes characterized. All six antibodies (MFTM-1-MFTM-6) bound to an elastase-digested active fragment of thrombomodulin, which contains six consecutive EGF domains. Binding of thrombomo...

journal_title：Journal of biochemistry

authors： Hayashi T,Suzuki K

更新日期：1990-11-01 00:00:00

abstract：:We examined the substrate specificity of two mutated geranylgeranyl diphosphate synthases, I-9 and I-11, with respect to several artificial substrates. These mutated enzymes have replacements in the amino acid sequences from positions 170 to 173, which are thought to be a part of the putative substrate binding region....

journal_title：Journal of biochemistry

authors： Ohnuma S,Hemmi H,Koyama T,Ogura K,Nishino T

更新日期：1998-06-01 00:00:00