Importance of Tyr310 residue in the third repeat of microtubule binding domain for filament formation of tau protein.

abstract：:To establish a system for overproduction of the ferrochelatase [EC 4.99.1.1] from Escherichia coli, a plasmid designated pFC3 was constructed. The 35-kDa protein was accumulated in E. coli DH5 alpha cells that harbored pFC3 to a level equal to approximately 9% of the total protein (roughly 50 mg/liter) upon thermal in...

journal_title：Journal of biochemistry

authors： Miyamoto K,Kanaya S,Morikawa K,Inokuchi H

更新日期：1994-03-01 00:00:00

abstract：:The binding properties of dynein arms to the A- and B-tubules of outer doublets of cilia from Tetrahymena pyriformis were examined, with the following results: 1. When 30s dynein purified from Tetrahymena cilia was added to doublets deficient in dynein arms, it bound to both A- and B-tubules almost equally and formed ...

journal_title：Journal of biochemistry

authors： Takahashi M,Tonomura Y

更新日期：1978-12-01 00:00:00

abstract：:The structure of a ferricytochrome c' extracted from Rhodospirillum rubrum has been determined at 6 A resolution by the X-ray crystallographic method. The crystals, obtained by dialyzing the protein solution against polyethylene glycol 4000, belong to the hexagonal space group P6(1). Two heavy atom derivatives were ob...

journal_title：Journal of biochemistry

authors： Yasui M,Harada S,Kai Y,Kasai N

更新日期：1985-07-01 00:00:00

abstract：:Eph/ephrin signalling plays essential roles in various tissue developments, such as axon guidance, angiogenesis and tissue separation. Interaction between Ephs and ephrins upon cell-cell contact results in forward (towards Eph-expressing cells) and reverse (towards ephrin-expressing cells) signalling. Although the mol...

journal_title：Journal of biochemistry

authors： Takeuchi S,Katoh H,Negishi M

更新日期：2015-09-01 00:00:00

abstract：:The present study was undertaken in an attempt to clarify the pathway by which hyperosmotic stress induces HB-EGF gene expression in rat aortic smooth muscle cells (RASMC). Hyperosmotic stress induced by a high concentration of glucose or mannitol resulted in an increase in HB-EGF mRNA level in a dose- and time-depend...

journal_title：Journal of biochemistry

authors： Koh YH,Che W,Higashiyama S,Takahashi M,Miyamoto Y,Suzuki K,Taniguchi N

更新日期：2001-09-01 00:00:00

abstract：:Calpastatin, an endogenous inhibitor protein specifically acting on calpain [EC 3.4.22.17; Ca2+-dependent cysteine proteinase], was purified to apparent homogeneity from the cytosol fraction of human erythrocytes. The yield was 0.38 mg from 400 ml of blood. The purification procedures included DEAE-cellulose and Ultro...

journal_title：Journal of biochemistry

authors： Takano E,Murachi T

更新日期：1982-12-01 00:00:00

abstract：:We have examined critically whether or not new and old histones mix in the octameric units of nucleosomes during chromatin replication. MH-134SC cells were density-labeled by culturing with amino acid mixtures enriched with dense isotopes 2H, 13C, and 15N. Mononucleosomes obtained from labeled cells were fractionated ...

journal_title：Journal of biochemistry

authors： Yamasu K,Senshu T

更新日期：1987-04-01 00:00:00

abstract：:After a dose of 10 micrograms of 6-aminonicotinamide (6-AN) was administered to day-4- chick embryo in ovo, micromelia was obviously observed in the hind limbs of 7-day chick embryos. We examined the teratogenic mechanism of 6-AN by using the normal or micromelial hind limbs (buds) from day 5 to day 7, with special at...

journal_title：Journal of biochemistry

authors： Honda A,Iwama M,Umeda T,Mori Y

更新日期：1982-06-01 00:00:00

abstract：:C3-translational product, which was synthesized with rabbit liver mRNA in a reticulocyte lysate protein-synthesizing system, did not react with [14C]methylamine, indicating the lack of an internal thioester bond. Instead, the C3-translational product reacted with iodo[1-14C]acetamide, as determined by gel electrophore...

journal_title：Journal of biochemistry

authors： Iijima M,Tobe T,Sakamoto T,Tomita M

更新日期：1984-11-01 00:00:00

abstract：:A simple, sensitive, and accurate method for determination of cholestanol in plasma is described. In this method a fixed amount of cholestane is added to 1 ml of plasma as an internal standard and steroids are saponified and extracted with n-hexane. The amounts of cholestanol and cholesterol are determined by mass fra...

journal_title：Journal of biochemistry

authors： Seyama Y,Ichikawa K,Yamakawa T

更新日期：1976-08-01 00:00:00

abstract：:When the competitive inhibitor benzeneboronic acid (BBA) forms a complex with alpha-chymotrypsin [EC 3.4.21.1] protons are released in the acidic pH region. The proton release can be measured by a difference potentiometric technique. The proton release is also observed in chymotrypsinogen A but not in TRCK-, DIP-, and...

journal_title：Journal of biochemistry

authors： Hanai K

更新日期：1976-01-01 00:00:00

abstract：:Ca2+-activated neutral protease (CANP) usually requires mM Ca2+ for activation. The sensitivity of CANP to Ca2+ is greatly enhanced by passing it through a casein-Sepharose column in the presence of Ca2+ ions. This conversion is ascribed to autolysis of CANP. The converted enzyme required 40 microM Ca2+ for 50% activa...

journal_title：Journal of biochemistry

authors： Suzuki K,Tsuji S,Kubota S,Kimura Y,Imahori K

更新日期：1981-07-01 00:00:00

abstract：:The melanocortin receptor type 4 (MC4-R) is involved in food intake and represents a potential target for the treatment of some forms of obesity. The fluorescent protein EGFP was fused to the wild-type or mutated coding sequence of the human MC4-R. After transfection in HEK 293, clones stably expressing hMC4-R-EGFP we...

journal_title：Journal of biochemistry

authors： Blondet A,Doghman M,Rached M,Durand P,Bégeot M,Naville D

更新日期：2004-04-01 00:00:00

abstract：:Synthesis of the acid-soluble proteins in the early cleavage stage of the sea urichin, Hemicentrotus pulcherrimus, was investigated. As detected by the incorporation of lysine, the acid-soluble proteins were synthesized periodically even before the first cleavage, differing from the pattern of incorporation of tryptop...

journal_title：Journal of biochemistry

authors： Kano K,Mano Y

更新日期：1976-09-01 00:00:00

abstract：:Caldesmon, calmodulin-, and actin-binding protein of chicken gizzard did not affect the process of polymerization of actin induced by 0.1 M KCl. Caldesmon binds to F-actin, thus inhibiting the gelation action of actin binding protein (ABP; filamin). Low shear viscosity and flow birefringence measurements revealed that...

journal_title：Journal of biochemistry

authors： Maruyama K,Morimoto K,Kijima Y,Sobue K,Kakiuchi S

更新日期：1985-05-01 00:00:00

abstract：:Thrombomodulin (TM) is a thrombin receptor on the surface of endothelial cells that converts thrombin from a procoagulant to an anticoagulant. Thrombin promotes invasion by various tumor cells, and positive or negative correlations are found between the expression of TM and tumorigenesis in some patients. In this stud...

journal_title：Journal of biochemistry

authors： Niimi S,Harashima M,Takayama K,Hara M,Hyuga M,Seki T,Ariga T,Kawanishi T,Hayakawa T

更新日期：2005-05-01 00:00:00

abstract：:FOXP2 is a member of the P subfamily of FOX transcription factors, the DNA-binding domain of which is the winged helix forkhead domain (FHD). In this work we show that the FOXP2 FHD is able to bind to various DNA sequences, including a novel sequence identified in this work, with different affinities and rates as dete...

journal_title：Journal of biochemistry

authors： Webb H,Steeb O,Blane A,Rotherham L,Aron S,Machanick P,Dirr H,Fanucchi S

更新日期：2017-07-01 00:00:00

abstract：:7 beta-Hydroxysteroid dehydrogenase (7 beta-HSD) was produced by Ruminococcus sp. PO1-3 obtained from among human intestinal bacteria. The enzyme was purified from a crude extract by ammonium sulfate fractionation, and Butyl-Toyopearl 650M, Sephadex G-150, Matrex Red A and Octyl-Sepharose chromatographies. The purifie...

journal_title：Journal of biochemistry

authors： Akao T,Akao T,Kobashi K

更新日期：1987-09-01 00:00:00

abstract：:We examined the inhibitory effect of three pseudo-aminosugars (validamine, valienamine, and valiolamine), which were isolated from the broth of Streptomyces hygroscopicus, on the oligosaccharide-processing glucosidases I and II involved in glycoprotein biosynthesis in rat liver. Both glucosidases I and II were inhibit...

journal_title：Journal of biochemistry

authors： Takeuchi M,Kamata K,Yoshida M,Kameda Y,Matsui K

更新日期：1990-07-01 00:00:00

abstract：:Polychlorinated biphenyls (PCBs) are well-known recalcitrant environmental pollutants. Although the metabolism of the PCBs has been intensively studied, very little is known about their mechanism of toxicity in living organisms or how they are degraded. We have examined the effects of PCBs on two different yeast strai...

journal_title：Journal of biochemistry

authors： Ryu JH,Lee Y,Han SK,Kim HY

更新日期：2003-07-01 00:00:00

abstract：:The stimulatory effects of glucose and lactate on protein synthesis by round spermatids (steps 1-8) were further studied. When the cells were incubated with lactate, the response of protein synthesis in round spermatids was closely related to the intracellular level of ATP. The ATP level in spermatids increased to 3.1...

journal_title：Journal of biochemistry

authors： Nakamura M,Hino A,Kato J

更新日期：1981-10-01 00:00:00

abstract：:Histidine and its derivatives increased rabbit muscle fructose 1,6-bisphosphatase activity at neutral pH with positive cooperativity. In the presence of histidine and carnosine the optimum pH shifted from pH 8.0 to 7.4. The cooperative response of the enzyme to AMP and fructose 1,6-bisphosphate was observed in the pre...

journal_title：Journal of biochemistry

authors： Ikeda T,Kimura K,Hama T,Tamaki N

更新日期：1980-01-01 00:00:00

abstract：:The cellular Src (c-Src) tyrosine kinase is upregulated and believed to play a pivotal role in various human cancers. However, the molecular mechanism underlying c-Src-mediated tumour progression remains elusive. Recent studies have revealed that several microRNAs (miRNAs) function as tumour suppressors by regulating ...

journal_title：Journal of biochemistry

authors： Oneyama C,Okada M

更新日期：2015-06-01 00:00:00

abstract：:The degranulation reactions of human neutrophils induced by 1-oleoyl-2-acetylglycerol (OAG), phorbol 12-myristate 13-acetate (PMA), and calcium ionophore A23187 or their combinations, were studied. OAG in the absence of the Ca2+-ionophore A23187 stimulated the releases of both lysozyme and lactoferrin, constituents of...

journal_title：Journal of biochemistry

authors： Kang D,Tsuda H,Takeshige K,Shibata Y,Minakami S

更新日期：1985-12-01 00:00:00

abstract：:Acetohydroxy acid synthetase [EC 4.1.3.18] of Neurospora crassa has been solubilized from a mitochondrial pellet fraction by sonic treatment in 1.0 M potassium phosphate buffer at pH 7.5 containing 10 mM MgSO4 and centrifugation at 180,000 X g for 20 min. The soluble enzyme thus obtained has a high specific activity a...

journal_title：Journal of biochemistry

authors： Kuwana H,Date M

更新日期：1975-01-01 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：:Temperature and solvent effects on reaction center structures were examined in two thermophilic photosynthetic bacteria, Chloroflexus aurantiacus and Chromatium tepidum, in order to gain insight into the interactions among the reaction center proteins and pigment systems. Thermal stability of the reaction centers was ...

journal_title：Journal of biochemistry

authors： Nozawa T,Madigan MT

更新日期：1991-10-01 00:00:00

abstract：:The betagamma subunits of G proteins were coimmunoprecipitated with antibodies against various alpha subunits, and analyzed by silver stain and immunoblotting with conventional transfer procedure and membrane-blocking buffer containing 2% BSA. Multiple isoforms of gamma were coimmunoprecipitated with no significant di...

journal_title：Journal of biochemistry

authors： Ueda H,Morishita R,Katoh-Semba R,Kato K,Asano T

更新日期：1998-11-01 00:00:00

abstract：:Amino acid compositions of 356 proteins are expressed as points in an 18 dimensional space of 18 axes representing the contents of amino acids. The proteins are classified into four groups of intra- and extracellular enzymes and nonenzymes according to analysis of the distribution of the points. The groups have a sign...

journal_title：Journal of biochemistry

authors： Nishikawa K,Ooi T

更新日期：1982-05-01 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