abstract：:Using a combined pharmacological and genetic approach, we have identified aa 260-280 in the C2 region as a critical factor in the catalytic function of protein kinase Calpha (PKCalpha). Progressive truncations from the N-terminus as well as selected internal deletion mutants were expressed in Saccharomyces cerevisiae ...

journal_title：Journal of biochemistry

authors： Rotenberg SA,Zhu J,Hansen H,Li XD,Sun XG,Michels CA,Riedel H

更新日期：1998-10-01 00:00:00

abstract：:Mitochondria have two independent protein-import machineries, one in the outer membrane (the Tom system) and the other in the inner membrane (the Tim system). Here, we have characterized the initial steps of precursor import into rat liver mitoplasts. The import reaction was separated into two stages, consisting of pr...

journal_title：Journal of biochemistry

authors： Ishihara N,Komiya T,Sakaguchi M,Ito A,Mihara K

更新日期：1998-10-01 00:00:00

abstract：:The DNA-dependent protein kinase (DNA-PK) holoenzyme consists of a 470-kDa catalytic subunit (DNA-PKcs), a DNA-binding regulatory component known as Ku protein, and double-stranded DNA (dsDNA) with ends. We previously reported that the activity of DNA-PK in vitro is stimulated by non-histone chromosomal high mobility ...

journal_title：Journal of biochemistry

authors： Yumoto Y,Shirakawa H,Yoshida M,Suwa A,Watanabe F,Teraoka H

更新日期：1998-09-01 00:00:00

abstract：:A 2-hydroxychromene-2-carboxylate isomerase was purified from a cell-free extract of naphthalenesulfonate-assimilating Pseudomonas sp. TA-2 to an electrophoretically homogeneous state by successive column chromatography on DEAE-cellulose, DEAE-Toyopearl 650M, Sephadex G-75, Hydroxyapatite, and Mono Q. The enzyme had a...

journal_title：Journal of biochemistry

authors： Ohmoto T,Kinoshita T,Moriyoshi K,Sakai K,Hamada N,Ohe T

更新日期：1998-09-01 00:00:00

abstract：:HSP47 is a stress protein (heat shock protein) which resides in the endoplasmic reticulum, and is postulated to function as a collagen-specific molecular chaperone. To elucidate the role of HSP47 in procollagen biosynthesis, we have established human embryonic kidney 293 cell lines, which were stably transfected with ...

journal_title：Journal of biochemistry

authors： Hosokawa N,Hohenadl C,Satoh M,Kühn K,Nagata K

更新日期：1998-09-01 00:00:00

abstract：:HPC-1/syntaxin 1A (HPC-1), which plays an important role in vesicular transport to the plasma membrane, possesses a hydrophobic sequence at its C terminus. When expressed from cDNA in COS cells, wild-type HPC-1 was localized in the Golgi complex and the plasma membrane. Truncation of the hydrophobic domain resulted in...

journal_title：Journal of biochemistry

authors： Masaki R,Yamamoto A,Akagawa K,Tashiro Y

更新日期：1998-08-01 00:00:00

abstract：:Studies on human cell hybrids of a cervical carcinoma cell line, HeLa, and normal fibroblasts have indicated that the tumorigenicity of these cells is under the control of a putative tumor suppressor on chromosome 11, although the nature of this suppressor remains unknown. We examined the expression of caveolin-1, a p...

journal_title：Journal of biochemistry

authors： Suzuki T,Suzuki Y,Hanada K,Hashimoto A,Redpath JL,Stanbridge EJ,Nishijima M,Kitagawa T

更新日期：1998-08-01 00:00:00

abstract：:His397 was replaced with alanine by site-directed mutagenesis of the cloned PRC1 gene in order to confirm the role of this residue in the proton-relay system of carboxypeptidase Y (CPY). The expressed and purified H397A showed a CD spectrum almost identical to that of the wild type enzyme, but its heat stability and c...

journal_title：Journal of biochemistry

authors： Jung G,Ueno H,Hayashi R

更新日期：1998-08-01 00:00:00

abstract：:PTF/SNAPc is a multisubunit complex which specifically recognizes the PSEs of small nuclear RNA genes and activates transcription by RNA polymerase II or III. Here we describe the isolation and characterization of genomic clones encoding the human PTFgamma/SNAP43 gene. The gene spans approximately 29 kilobases, and is...

journal_title：Journal of biochemistry

authors： Maeng JH,Yoon JB

更新日期：1998-07-01 00:00:00

abstract：:The sigmaH of Bacillus subtilis directs transcription of a large number of early sporulation genes, whereas the principal sigma factor, sigmaA, is essential for the transcription of the genes for vegetative growth and early sporulation. We have purified sigmaA and sigmaH proteins, and characterized their properties. T...

journal_title：Journal of biochemistry

authors： Fujita M,Sadaie Y

更新日期：1998-07-01 00:00:00

abstract：:We recently described the cloning of putative human CMP-sialic acid transporter (hCST) cDNA [Ishida, N. et al. (1996) J. Biochem. 120, 1074-1078]. The hCST cDNA coded for a hydrophobic protein with an amino acid sequence showing a high degree of similarity (92% identity) to that of murine CMP-sialic acid transporter. ...

journal_title：Journal of biochemistry

authors： Ishida N,Ito M,Yoshioka S,Sun-Wada GH,Kawakita M

更新日期：1998-07-01 00:00:00

abstract：:We have developed three mouse monoclonal antibodies (mAb) of types IgG1 and IgG2b, i.e. anti-acetylspermine (Ac-Spm)-1 and 2 (ACSPM-1 and 2), and anti-acetylspermine (Ac-Spm)-3 (ACSPM-3), respectively, against Ac-Spm conjugated to bovine serum albumin via a heterobifunctional cross-linker, N-(gamma-maleimidobutyryloxy...

journal_title：Journal of biochemistry

authors： Fujiwara K,Kaminishi Y,Kitagawa T,Tsuru D,Yabuuchi M,Kanetake H,Nomata K

更新日期：1998-07-01 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

abstract：:The plant hormone ethylene is generated from a unique precursor, 1-aminocyclopropane-1-carboxylate (ACC). In previous studies, ACC deaminase, which degrades ACC to alpha-ketobutyrate and ammonia, was found in four strains of Pseudomonas, characterized, and sequenced. To verify the wider distribution of ACC deaminase i...

journal_title：Journal of biochemistry

authors： Minami R,Uchiyama K,Murakami T,Kawai J,Mikami K,Yamada T,Yokoi D,Ito H,Matsui H,Honma M

更新日期：1998-06-01 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

authors： Inoue J,Sato R,Maeda M

更新日期：1998-06-01 00:00:00

abstract：:We have reported that high glucose conditions (27 mM for 4 days) induces activation of protein tyrosine phosphatases (PTPases) which are associated with impaired insulin signaling in Rat 1 fibroblasts expressing human insulin receptors [Maegawa, H. et al. (1995) J. Biol. Chem. 270, 7724-7730]. In this study, we found ...

journal_title：Journal of biochemistry

authors： Obata T,Maegawa H,Kashiwagi A,Pillay TS,Kikkawa R

更新日期：1998-05-01 00:00:00

abstract：:OS-9 gene is frequently coamplified with CDK4 gene in human sarcomas. We isolated and characterized three isoforms of OS-9 cDNA found in a myeloid leukemia HL-60 cDNA library. Isoform 1 consisted of 2,700 bp, from which a 667 amino acid sequence was deduced and found to be identical with that of OS-9 cDNA from osteosa...

journal_title：Journal of biochemistry

authors： Kimura Y,Nakazawa M,Yamada M

更新日期：1998-05-01 00:00:00

abstract：:An actin-depolymerizing marine natural product, mycalolide B, and a related compound, kabiramide D, were labeled with biocytin, a biotin derivative, and used to specify target molecules in cultured rat 3Y1 fibroblasts. Mycalolide B exhibited the ability to bind to various intracellular proteins, probably through the M...

journal_title：Journal of biochemistry

authors： Wada S,Matsunaga S,Saito S,Fusetani N,Watabe S

更新日期：1998-05-01 00:00:00

abstract：:Using an F-actin affinity column, a 60 kDa fragment of a 71 kDa F-actin-binding protein was partially purified from Tetrahymena pyriformis. After digestion of the 60 kDa fragment with cyanogen bromide, the N-terminal 21-amino acid sequence of one of the resulting peptides was found to show sequence similarity to a reg...

journal_title：Journal of biochemistry

authors： Watanabe A,Kurasawa Y,Watanabe Y,Numata O

更新日期：1998-04-01 00:00:00

abstract：:We purified an antimicrobial protein of 76 residues, denoted bovine antimicrobial protein-1 (BAMP-1), from fetal calf serum using hydrophobic chromatography, gel filtration, and reverse-phase high-performance liquid chromatography. The amino acid sequence of BAMP-1 was similar to that of human apolipoprotein A-II (apo...

journal_title：Journal of biochemistry

authors： Motizuki M,Itoh T,Yamada M,Shimamura S,Tsurugi K

更新日期：1998-04-01 00:00:00

abstract：:We have studied the regio- and stereoselectivity of ring-hydroxylation and N-desisopropylation of S(-)- and R(+)-propranolol, using dog liver microsomes and the expressed dog CYP2D15 in insect cells. In dog liver microsomes, 4-hydroxylation was the preferred pathway in S(-)-propranolol oxidation, while N-desisopropyla...

journal_title：Journal of biochemistry

authors： Tasaki T,Iwata H,Kazusaka A,Fujita S

更新日期：1998-04-01 00:00:00

abstract：:The mitochondrial regulatory region (mrr) located between the tRNAPhe and tRNAPro genes of mitochondrial DNA (mtDNA) is essential for regulation of replication and transcription of the mitochondrial genome. Polyadenylated short RNAs complementary to the L-strand of the mrr in human cells and similar RNAs (polyadenylat...

journal_title：Journal of biochemistry

authors： Nakamichi N,Rhoads DD,Hayashi JI,Kagawa Y,Matsumura T

更新日期：1998-03-01 00:00:00

abstract：:We prepared a streptavidin-based neoglycoprotein which carries more than 140 GT1b oligosaccharides. GT1b oligosaccharides were covalently coupled to streptavidin by reductive amination, yielding a monomer form of streptavidin carrying 13 oligosaccharides. The monomer form of glycosylated streptavidin was polymerized w...

journal_title：Journal of biochemistry

authors： Hashimoto Y,Suzuki M,Crocker PR,Suzuki A

更新日期：1998-03-01 00:00:00

abstract：:A cDNA for mouse prolyl endopeptidase (PEP) was cloned and its nucleotide sequence determined. The overall amino acid sequence identity between mouse and other mammalian PEPs was about 96%. A specific inhibitor of PEP, N-benzyloxycarbonyl-thioprolyl-thioprolinal- dimethylacetal (ZTTA), inhibited DNA synthesis by Swiss...

journal_title：Journal of biochemistry

authors： Ishino T,Ohtsuki S,Homma Ki,Natori S

更新日期：1998-03-01 00:00:00

abstract：:We have purified L-kynurenine 3-monooxygenase from pig liver mitochondria using a procedure involving seven steps composed of (1) preparation of mitochondrial outer membrane, (2) preparation of the zwitterionic detergent, 3-[(3-cholamidopropyl)dimethylammonio]-1-propane sulfonate (Chaps) insoluble outer membrane mater...

journal_title：Journal of biochemistry

authors： Uemura T,Hirai K

更新日期：1998-02-01 00:00:00

abstract：:Fluorescence resonance energy transfer spectroscopy has been used to study the spatial relationships between probes attached to actin and troponin in the reconstituted skeletal muscle thin filament in the presence and absence of Ca2+ ions. Gln-41 and the nucleotide-binding site of actin were selectively labeled with t...

journal_title：Journal of biochemistry

authors： Miki M,Kobayashi T,Kimura H,Hagiwara A,Hai H,Maéda Y

更新日期：1998-02-01 00:00:00

abstract：:Cytokine-induced neutrophil chemoattractant (CINC/Gro) is a chemotactic factor for neutrophils in the rat and a member of the CXC chemokine family. The refined three-dimensional structure of CINC/Gro was derived with the aid of heteronuclear magnetic resonance spectroscopy and a hybrid method of distance geometry and ...

journal_title：Journal of biochemistry

authors： Hanzawa H,Haruyama H,Konishi K,Watanabe K,Tsurufuji S

更新日期：1998-01-01 00:00:00

abstract：:LipB, the lipase activator protein of Pseudomonas aeruginosa TE3285, was overproduced in Escherichia coli, and purified 4.9-fold over the crude extract in the presence of SDS. The purified LipB reactivated the lipase from P. aeruginosa TE3285 denatured with guanidine hydrochloride, and its reactivation did not involve...

journal_title：Journal of biochemistry

authors： Shibata H,Kato H,Oda J

更新日期：1998-01-01 00:00:00

abstract：:The 565 amino-acid PRIB protein with a Zn(II)2Cys6 zinc-cluster DNA-binding motif is the expression product of the priB gene, which is most actively transcribed in an early stage of fruiting-body formation by the basidiomycete, Lentinus edodes. PRIB produced in Escherichia coli using the bacteriophage T7 expression sy...

journal_title：Journal of biochemistry

authors： Miyazaki Y,Tsunoka O,Shishido K

更新日期：1997-12-01 00:00:00

abstract：:The properties of phospholipase A1 (PLA1) obtained from the white muscle of bonito, Euthynnus pelamis (Linnaeus), were examined. The PLA1 activity had a pH optimum from 6.5 to 7.0 for phosphatidylcholine (PC), and calcium ion was not required. The optimum temperature was from 20 to 30 degrees C. When a fatty alcohol w...

journal_title：Journal of biochemistry

authors： Hirano K,Tanaka A,Yoshizumi K,Tanaka T,Satouchi K

更新日期：1997-12-01 00:00:00

abstract：:In this study, we demonstrated that glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is a phosphatidylserine (PS)-binding protein and localized the putative PS-binding site involved in the membrane fusion induced by this enzyme. In an attempt to identify the PS-binding proteins, we raised polyclonal antibodies against...

journal_title：Journal of biochemistry

authors： Kaneda M,Takeuchi K,Inoue K,Umeda M

更新日期：1997-12-01 00:00:00

abstract：:Site-directed mutagenesis studies of recombinant Trimeresurus flavoviridis venom gland phospholipase A2 (PLA2) showed that the Asn residue at position 67 takes part in recognition of the substrate 2-arachidonoyl sn-glycero-3-phosphocholine in both monomeric and micellar states. The amount of arachidonate released from...

journal_title：Journal of biochemistry

authors： Ogawa T,Shimohigashi Y,Ohno M

更新日期：1997-11-01 00:00:00

abstract：:The binding of nuclear envelope precursor vesicles and chromatin was characterized by using an in vitro system constituted from a Xenopus egg extract and demembranated Xenopus sperm chromatin. The results of binding studies in the presence of salts, urea, and a chelator showed that the binding involves an ionic intera...

journal_title：Journal of biochemistry

authors： Imai N,Sasagawa S,Yamamoto A,Kikuchi F,Sekiya K,Ichimura T,Omata S,Horigome T

更新日期：1997-11-01 00:00:00

abstract：:The Basidiomycete ras gene possesses a pyrimidine-rich stretch (CT-motif) with a short (7 bases) mirror repeat in which its major transcription start point is contained. To analyze the tertiary structure induced by the CT/AG-biased sequence and its effect on gene expression in supercoiled plasmids in Escherichia coli,...

journal_title：Journal of biochemistry

authors： Yamazaki T,Hasebe T,Shouguchi J,Amano H,Kajiwara S,Shishido K

更新日期：1997-10-01 00:00:00

abstract：:Gram-positive thermophilic Bacillus species contain cytochrome caa3-type cytochrome c oxidase as their main terminal oxidase in the respiratory chain. To identify alternative oxidases, we isolated several mutants from B. stearothermophilus defective in the caa3-type oxidase activity [Sakamoto, J. et al (1996) FEMS Mic...

journal_title：Journal of biochemistry

authors： Sakamoto J,Handa Y,Sone N

更新日期：1997-10-01 00:00:00

abstract：:A gene for a methionine aminopeptidase (MAP; EC 3.4.11.18), which catalyzes the removal of amino-terminal methionine from the growing peptide chain on the ribosome, has been cloned from the hyperthermophilic Archaeon, Pyrococcus furiosus, by a novel method effectively using its cosmid protein library, sequenced and ex...

journal_title：Journal of biochemistry

authors： Tsunasawa S,Izu Y,Miyagi M,Kato I

更新日期：1997-10-01 00:00:00

abstract：:Soluble guanylate cyclase (sGC) consisting of two different subunits (alpha: Mr = 74,000, beta: Mr = 69,000) was purified more than 12,000-fold in terms of specific activity from the supernatant of bovine lung homogenates and characterized. The heme content determined with the pyridine hemochromogen method and Bradfor...

journal_title：Journal of biochemistry

authors： Tomita T,Tsuyama S,Imai Y,Kitagawa T

更新日期：1997-09-01 00:00:00

abstract：:We cloned and sequenced the Serratia marcescens prolyl aminopeptidase (SPAP) gene. Nucleotide sequence analysis revealed an open reading frame of 951 bp, encoding a protein of 317 amino acids with a predicted molecular weight of 36,083. The expressed enzyme was purified about 90-fold on columns of Toyopearl HW65C and ...

journal_title：Journal of biochemistry

authors： Kabashima T,Kitazono A,Kitano A,Ito K,Yoshimoto T

更新日期：1997-09-01 00:00:00

abstract：:The position in the acyl phosphate linkage of the phosphorylated intermediate of (Na+, K+)-ATPase that is cleaved by N-methylhydroxylamine was compared with that of the model compound acetylphosphate. The products of the cleavage of the phosphoenzyme by methylhydroxylamine were the active enzyme and a N-P compound, no...

journal_title：Journal of biochemistry

authors： Ushimaru M,Shinohara Y,Fukushima Y

更新日期：1997-09-01 00:00:00

abstract：:Proteolytic trimming of isoprenylated proteins, including Ras, at the C-terminal CAAX motifs is a key event in their activation. However, the protease responsible for the proteolysis has not been well characterized yet. In this study, we established a novel assay method for the enzyme using a fluorescent substrate, da...

journal_title：Journal of biochemistry

authors： Nishii W,Muramatsu T,Kuchino Y,Yokoyama S,Takahashi K

更新日期：1997-08-01 00:00:00