The global regulator LaeA controls penicillin biosynthesis, pigmentation and sporulation, but not roquefortine C synthesis in Penicillium chrysogenum.

abstract：:Using natural inducers of beta-glucuronidase, methyl-glucuronide and fructuronate, under gratuitous conditions (without metabolic conversion of these two compounds), we corroborate the fact that both molecules are required simultaneously in order to derepress the enzyme synthesis to a maximum level. Structurally relat...

journal_title：Biochimie

authors： Mandrand-Berthelot MA,Novel G,Novel M

更新日期：1977-01-01 00:00:00

abstract：:After 30 years of effort, the mammalian adenylate cyclase catalytic subunit has now been purified. It is a glycoprotein of 155 kDa, representing less than 0.01% of synaptosomal membrane protein. As measured in the presence of forskolin, its specific activity is 10-20 mumol of cAMP X mg-1 X min-1. The enzyme obtained i...

journal_title：Biochimie

authors： Monneron A,d'Alayer J,Coussen F

更新日期：1987-04-01 00:00:00

abstract：:The class I glutamine (Gln) tRNA synthetase interacts with the anticodon and acceptor stem of glutamine tRNA. RNA hairpin helices were designed to probe acceptor stem and anticodon stem-loop contacts. A seven-base pair RNA microhelix derived from the acceptor stem of tRNA(Gln) was aminoacylated by Gln tRNA synthetase....

journal_title：Biochimie

authors： Wright DJ,Martinis SA,Jahn M,Söll D,Schimmel P

更新日期：1993-01-01 00:00:00

abstract：:Rhizopus oryzae lipase (ROL) was found to be a true lipase. This enzyme presents the interfacial activation phenomenon. The N-terminal amino acid sequence of ROL was compared to those of rhizopus lipases. Purified ROL possesses the same N-terminal sequence as the mature Rhizopus niveus lipase (RNL). This sequence was ...

journal_title：Biochimie

authors： Ben Salah A,Sayari A,Verger R,Gargouri Y

更新日期：2001-06-01 00:00:00

abstract：:A methylene group of camphor is hydroxylated by a P450 monoxygenase system containing in addition to the cytochrome and flavoprotein dehydrogenase a two-iron, two-sulfur redox protein termed putidaredoxin. The regulatory control of electron transport equilibrium occurs via ligation of substrate and redoxin to the cyto...

journal_title：Biochimie

authors： Gunsalus IC,Sligar SG

更新日期：1976-01-01 00:00:00

abstract：:When ribosomes encounter mRNAs lacking stop codons, two quality-control machineries, NSD for nonstop mRNA decay and ribosome quality control (RQC) for co-translational degradation of the nonstop protein by the proteasome, are triggered to eliminate aberrant molecules. In yeast, it is known that Dom34 (a homolog of eRF...

journal_title：Biochimie

authors： Kashima I,Takahashi M,Hashimoto Y,Sakota E,Nakamura Y,Inada T

更新日期：2014-11-01 00:00:00

abstract：:Synthetic antiestrogens such as Tamoxifen (Nolvadex) are currently used to treat postmenopausal breast cancer. Their mechanism of action is reviewed at the cellular and molecular level, through data of the literature and the current view of the author. Synthetic antiestrogens are mostly acting directly on breast cance...

journal_title：Biochimie

authors： Rochefort H

更新日期：1982-02-01 00:00:00

abstract：:Polysialylated neural cell adhesion molecule (NCAM) was immunoaffinity-purified from the brains of newborn calves. A degree of polymerization of up to 40 was chromatographically determined for released polysialic acid (PSA) chains. For characterization of N-glycan structures and attachment sites, PSA-NCAM was digested...

journal_title：Biochimie

authors： Wuhrer M,Geyer H,von der Ohe M,Gerardy-Schahn R,Schachner M,Geyer R

更新日期：2003-01-01 00:00:00

abstract：:The hbs operon of Bacillus subtilis comprises a single gene which is localized between the spoIVA and mtrA open reading frames, and is situated at 204 degrees of the standard map of B subtilis. Expression of hbs is initiated from two distinct promoters called P1 and P2. The transcription initiation sites have been map...

journal_title：Biochimie

authors： Micka B,Marahiel MA

更新日期：1992-07-01 00:00:00

abstract：:The mitochondria have arisen as a consequence of endosymbiosis of an ancestral α-proteobacterium with a methane-producing archae. The main function of the canonical aerobic mitochondria include ATP generation via oxidative phosphorylation, heme and phospholipid synthesis, calcium homeostasis, programmed cell death, an...

journal_title：Biochimie

authors： Makiuchi T,Nozaki T

更新日期：2014-05-01 00:00:00

abstract：:RNA phosphodiester bonds can be cleaved by metal ions, of which Pb2+ is one of the most effective. It can cleave both generally and site-specifically, depending on the substrate and the conditions. In addition, metal ions are also known to cleave ester bonds between amino acid and the 3'-end of transfer RNA. Here we r...

journal_title：Biochimie

authors： Otzen DE,Barciszewski J,Clark BF

更新日期：1994-01-01 00:00:00

abstract：:Gastrokine1 (GKN1), important for maintaining the physiological function of the gastric mucosa, is highly expressed in the stomach of healthy individuals but is down-regulated or absent in gastric tumor tissues and derived cell lines. The mechanisms underlying GKN1 gene inactivation are still unknown. We previously sh...

journal_title：Biochimie

authors： Stella di Stadio C,Faraonio R,Federico A,Altieri F,Rippa E,Arcari P

更新日期：2019-12-01 00:00:00

abstract：:The recent increase in the intake of folic acid by the general public through fortified foods and supplements, has raised safety concern based on early reports of adverse health outcome in elderly with low B12 status who took high doses of folic acid. These safety concerns are contrary to the 2015 WHO statement that "...

journal_title：Biochimie

authors： Selhub J,Rosenberg IH

更新日期：2016-07-01 00:00:00

abstract：:Our study highlights the tight relationship between protein binding to monolayers and the phase-state of the phospholipids. Interaction of mitochondrial creatine kinase with phospholipidic membranes was analysed using a two-phase monolayer system containing anionic phospholipids under chain mismatch conditions. Monola...

journal_title：Biochimie

authors： Vernoux N,Maniti O,Marcillat O,Vial C,Granjon T

更新日期：2009-06-01 00:00:00

abstract：:A thrombin-like enzyme, named BjussuSP-I, isolated from Bothrops jararacussu snake venom, is an acidic single-chain glycoprotein with M(r)=61,000, pI approximately 3.8 and 6% sugar. BjussuSP-I shows high proteolytic activity upon synthetic substrates, such as S-2238 and S-2288. It also shows procoagulant and kallikrei...

journal_title：Biochimie

authors： Sant'Ana CD,Bernardes CP,Izidoro LF,Mazzi MV,Soares SG,Fuly AL,Zingali RB,Magro AJ,Braz AS,Fontes MR,Stábeli RG,Sampaio SV,Soares AM

更新日期：2008-03-01 00:00:00

abstract：:Labeling of 21-kDa material was observed when bovine brain soluble fraction was incubated with [adenylate-32P]NAD+ in the presence of GTP. The 21-kDa substrate, slightly smaller than C3 substrate in size, was labeled even without C3 exoenzyme. GTP could be replaced by nucleoside triphosphates other than ATP while ATP ...

journal_title：Biochimie

authors： Badruzzaman M,Miyaoka T,Terashima M,Yamada K,Ohno T,Yamamori C,Tsuchiya M,Shimoyama M

更新日期：1997-07-01 00:00:00

abstract：:Attempts at isolating individual human milk proteins showed that cross interactions made it difficult to obtain of homogeneous components. A new method was devised, based on complete precipitation of milk proteins with saturated ammonium sulphate and progressive solubilization of the precipitate on a column of Sephade...

journal_title：Biochimie

authors： Brignon G,Ribadeau-Dumas B

更新日期：1982-03-01 00:00:00

abstract：:Triple-negative breast cancer (TNBC) is a heterogeneous group of breast cancer with one common feature: distinctly metastatic nature with higher rate of relapse and shorter survival compared with other subtypes of breast cancer. The epithelial to mesenchymal transition (EMT) is highly associated with cancer metastasis...

journal_title：Biochimie

authors： Liang L,Liu X,He J,Shao Y,Liu J,Wang Z,Xia L,Han T,Wu P

更新日期：2019-07-01 00:00:00

abstract：:Nephropathy is one of the most frequent complications of chronic diabetes. The main reason for nephropathy despite being hyperglycemia, but it progresses even after good glycemic control has been achieved in diabetic patients. The effects of prior exposure to high blood glucose conditions depend upon the severity and ...

journal_title：Biochimie

authors： Kushwaha K,Sharma S,Gupta J

更新日期：2020-03-01 00:00:00

abstract：:The chicken ovalbumin (Ov) gene is one of the best models to study tissue-specific gene regulation because it is only expressed in the oviduct. In this paper, a tissue-specific element was characterized by 5'-flanking region deletion in combination with in vivo gene electroporation (EP). Plasmids with varying lengths ...

journal_title：Biochimie

authors： Park HM,Sanders MM,Suzuki T,Muramatsu T

更新日期：2006-12-01 00:00:00

abstract：:Human delta-aminolevulinic acid dehydratase (ALA-D) was purified 9 000-fold by salt precipitation, ion-exchange chromatography and gel filtration. These methods resulted into an electrophoretically and immunologically pure protein. The optimum pH of the enzyme is 6.6 and its Km with ALA : 4.8 X 10(-4) M. The enzymatic...

journal_title：Biochimie

authors： Despaux N,Comoy E,Bohuon C,Boudène C

更新日期：1979-01-01 00:00:00

abstract：:DNA replication in Escherichia coli is controlled at the initiation stage, possibly by regulation of the essential activity of DnaA protein. The cellular membrane has long been hypothesized to be involved in chromosomal replication. Accumulating evidence, both in vitro and in vivo, that supports the importance of memb...

journal_title：Biochimie

authors： Crooke E

更新日期：2001-01-01 00:00:00

abstract：:The mechanism responsible for creating the division site in the right place at the right time in bacteria is unknown. It has been attributed to the formation of proteolipid domains in the cytoplasmic membrane surrounding the nucleoids. We interpret the growing evidence for this hypothesis by invoking hyperstructures, ...

journal_title：Biochimie

authors： Norris V,Fishov I

更新日期：2001-01-01 00:00:00

abstract：:In the process of L-phenylalanine oxidation by Proteus mirabilis cytoplasmic membrane, hydrogen peroxide was produced at a rate corresponding to 1-3 per cent of the total electron flow (30-110 nmoles min-1mg-1). Peroxide was estimated using a fluorimetric assay with horseradish peroxidase, or by anodic oxidation on a ...

journal_title：Biochimie

authors： Sauret-Ignazi G,Laboure-Rossat AM,Jouve HM,Pelmont J

更新日期：1982-10-01 00:00:00

abstract：:Kinetic parameters characterizing the catalytic activities of enzymes are typically investigated in dilute solutions. However, in reality, these reactions occur in cells that, in addition to water and ions, are full of other macromolecules including proteins, nucleic acids, lipids, and metabolites. Such a crowded envi...

journal_title：Biochimie

authors： Popielec A,Ostrowska N,Wojciechowska M,Feig M,Trylska J

更新日期：2020-09-01 00:00:00

abstract：:The methylotrophic yeast Pichia pastoris is often used as an organism for the heterologous expression of proteins and has been used already for production of a number of glycosyltransferases involved in the biosynthesis of N- and O-linked oligosaccharides. In our recent studies, we have examined the expression in P. p...

journal_title：Biochimie

authors： Bencúrová M,Rendić D,Fabini G,Kopecky EM,Altmann F,Wilson IB

更新日期：2003-03-01 00:00:00

abstract：:A high level of subcellular compartmentalization is a hallmark of eukaryotic cells. This intricate internal organization was present already in the common ancestor of all extant eukaryotes, and the determination of the origins and early evolution of the different organelles remains largely elusive. Organellar proteome...

journal_title：Biochimie

authors： Gabaldón T,Pittis AA

更新日期：2015-12-01 00:00:00

abstract：:Dysfunction in lipid metabolism may result in a decrease in hepatic autophagy, which contributes to the pathogenesis of non-alcoholic steatohepatitis. ATP-binding cassette transporter A1 transports free cholesterol and phospholipids to apolipoprotein A-I (apoA-I) to form nascent high-density lipoprotein particles. Res...

journal_title：Biochimie

authors： Rao X,Wang Y

更新日期：2019-10-01 00:00:00

abstract：:Kinetic studies indicate that glucose-6-phosphatase is a multifunctional enzyme. a) Phosphohydrolase activities. The mannose-6-phosphatase activity is low (Km = 8 mM, VM = 90 nmoles. min-1mg-1). The enzyme shows a strong affinity for glucose-6-phosphate (Km = 2.5 mM, VM = 220 nmoles.min-1mg-1). beta-glycerophosphate (...

journal_title：Biochimie

authors： Benedetto JP,Martel MB,Got R

更新日期：1979-01-01 00:00:00

abstract：:Vegetable oils, consisting principally of triacylglycerols (TAG), are major sources of calories and essential fatty acids in the human diet. The fatty acid composition of TAG is a primary determinant of the nutritional quality and health-promoting properties of vegetable oils. TAG fatty acid composition also affects t...

journal_title：Biochimie

authors： Msanne J,Kim H,Cahoon EB

更新日期：2020-11-01 00:00:00