abstract：:Mammalian aminoacylase-1 (Acy1) participates in the breakdown of N-acetylated amino acids during intracellular protein catabolism. Acy1 is most abundantly expressed in the kidney tubular epithelium. Lately, Acy1 deficiency was identified in children with increased urinary excretion of several N-acetylamino acids. Here...

journal_title：Biochimie

authors： Lindner HA,Täfler-Naumann M,Röhm KH

更新日期：2008-05-01 00:00:00

abstract：:An unusual tri-domained (alpha-beta-beta) natural oyster metallothionein (MT) is known, and non-oxidative MT dimers occur in vivo in mollusk species and in mammals. To assess the respective role of the MT domains, two chimeric MTs were constructed: a tetra-domained oyster MT corresponding to the alpha-beta-alpha-beta ...

journal_title：Biochimie

authors： Moreau JL,Baudrimont M,Carrier P,Peltier G,Bourdineaud JP

更新日期：2008-05-01 00:00:00

abstract：:Current research in biology heavily depends on the availability and efficient use of information. In order to build new knowledge, various sources of biological data must often be combined. Semantic Web technologies, which provide a common framework allowing data to be shared and reused between applications, can be ap...

journal_title：Biochimie

authors： Pasquier C

更新日期：2008-04-01 00:00:00

abstract：:The iron absorption by duodenal enterocytes is a key step of its homeostasis. But the control of this absorption is complex and cannot be fully explicated with present knowledge. In a global transcriptome approach, we identified 60 genes over-expressed in hemin (iron) overload in Caco-2 cells, an in vitro model of duo...

journal_title：Biochimie

authors： Aubry M,Monnier A,Chicault C,Galibert MD,Burgun A,Mosser J

更新日期：2008-04-01 00:00:00

abstract：:The number of available genomic sequences is growing very fast, due to the development of massive sequencing techniques. Sequence identification is needed and contributes to the assessment of gene and species evolutionary relationships. Automated bioinformatics tools are thus necessary to carry out these identificatio...

journal_title：Biochimie

authors： Arigon AM,Perrière G,Gouy M

更新日期：2008-04-01 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：:We have previously proposed that the rate of ribosome function during balanced growth in E. coli, expressed as the rate of peptide chain elongation, is adjusted by a feedback mechanism: whenever that rate is submaximal (i.e. below 22 amino acid residues polymerized per active ribosome at 37 degrees C), the feedback si...

journal_title：Biochimie

authors： Bremer H,Dennis P

更新日期：2008-03-01 00:00:00

abstract：:Three mutanase (alpha-1,3-glucanase)-producing microorganisms isolated from soil samples were identified as a relatives of Paenibacillus. A mutanase was purified to homogeneity from cultures of each, and the molecular masses of the purified enzymes were approximately 132, 141, and 141kDa, respectively. The correspondi...

journal_title：Biochimie

authors： Hakamada Y,Sumitomo N,Ogawa A,Kawano T,Saeki K,Ozaki K,Ito S,Kobayashi T

更新日期：2008-03-01 00:00:00

abstract：:Human telomeres are intrinsically dynamic structures, with multiple biological processes operating to generate substantial length heterogeneity. Processes that operate specifically at the terminus, that include the end-replication problem coupled with C-strand resection, result in gradual telomere erosion with ongoing...

journal_title：Biochimie

authors： Baird DM

更新日期：2008-01-01 00:00:00

abstract：:Dyskeratosis congenita is an inherited syndrome characterised by mucocutaneous features, bone marrow failure, an increased risk of malignancy and other somatic abnormalities. There is a considerable range of clinical severity and in its occult form the disease may present as idiopathic aplastic anaemia. Genes responsi...

journal_title：Biochimie

authors： Vulliamy TJ,Dokal I

更新日期：2008-01-01 00:00:00

abstract：:Alteration of the epigenome is associated with a wide range of human diseases. Therefore, deciphering the pathways that regulate the epigenetic modulation of gene expression is a major milestone for the understanding of diverse biological mechanisms and subsequently human pathologies. Although often evoked, little is ...

journal_title：Biochimie

authors： Ottaviani A,Gilson E,Magdinier F

更新日期：2008-01-01 00:00:00

abstract：:PA1b (Pea Albumin 1b) is a peptide toxin lethal for certain insects. This paper shows that the cultured insect cells Sf9 are sensitive to the toxin and display a high-affinity binding site for PA1b. Mammalian cells are not sensitive and no binding activity was detected. Signs of apoptosis of the Sf9 cells were observe...

journal_title：Biochimie

authors： Rahioui I,Laugier C,Balmand S,Da Silva P,Rahbe Y,Gressent F

更新日期：2007-12-01 00:00:00

abstract：:In order to demonstrate the in vivo antioxidant properties of metallothioneins (MTs), the bacteria Escherichia coli was used as a cell reactor in which we compared the metal binding and antioxidative functions of MTs from different species, with different structures and polypeptide lengths. No protective effects of cy...

journal_title：Biochimie

authors： Achard-Joris M,Moreau JL,Lucas M,Baudrimont M,Mesmer-Dudons N,Gonzalez P,Boudou A,Bourdineaud JP

更新日期：2007-12-01 00:00:00

abstract：:The poisonous bite by Hippasa partita, a funnel web spider from the Indian subcontinent has been demonstrated to give rise to severe dermo- and myonecrosis. In this work a hemorrhagic metalloprotease, Partitagin was purified from H. partita venom by successive chromatography on Sephadex G-100, DEAE Sephadex A-50 and B...

journal_title：Biochimie

authors： Nagaraju S,Girish KS,Fox JW,Kemparaju K

更新日期：2007-11-01 00:00:00

abstract：:HIV-1 reverse transcriptase uses the host tRNA3(Lys) as a primer for the synthesis of the minus DNA strand. The first event in viral replication is thus the annealing of tRNA to the primer binding site (PBS) in the 5' UTR of the viral RNA. This event requires a major RNA rearrangement which is chaperoned by the viral ...

journal_title：Biochimie

authors： Barraud P,Gaudin C,Dardel F,Tisné C

更新日期：2007-10-01 00:00:00

abstract：:Adenosine to inosine (A-to-I) modification by the ADAR (adenosine deaminase that acts on RNA) enzymes perform the most common type of RNA editing in metazoans. ADARs use double stranded RNA as substrates but allow interruptions of bulges and loops in the structure. It is well known that these enzymes can use messenger...

journal_title：Biochimie

authors： Ohman M

更新日期：2007-10-01 00:00:00

abstract：:In most cancer cells, the ATP necessary for survival and proliferation is derived from glycolysis rather than from oxidative phosphorylations (OXPHOS) even when oxygen supply would be adequate to sustain them. This phenomenon, named "aerobic glycolysis" by Warburg many years ago, can now be explained by a mechanism up...

journal_title：Biochimie

authors： Hervouet E,Simonnet H,Godinot C

更新日期：2007-09-01 00:00:00

abstract：:Sphingolipids are degraded by sphingomyelinase and ceramidase in the gut to ceramide and sphingosine, which may inhibit cell proliferation and induce apoptosis, and thus have anti-tumour effects in the gut. Although previous rodent studies including experiments on knockout mice indicate a role of neutral ceramidase in...

journal_title：Biochimie

authors： Ohlsson L,Palmberg C,Duan RD,Olsson M,Bergman T,Nilsson A

更新日期：2007-08-01 00:00:00

abstract：:Halophilic proteins have evolved to be soluble, stable and active in high salt concentration. Crystallographic studies have shown that surface enrichment by acidic amino acids is a common structural feature of halophilic proteins. In addition, ion-binding sites have also been observed in most of the cases. The role of...

journal_title：Biochimie

authors： Madern D,Ebel C

更新日期：2007-08-01 00:00:00

abstract：:IL-28 and IL-29 were recently described as members of a new cytokine family that shares with type I interferon (IFN) the same Jak/Stat signalling pathway driving expression of a common set of genes. Accordingly, they have been named IFN lambda. IFNs lambda exhibit several common features with type I IFNs: antiviral ac...

journal_title：Biochimie

authors： Uzé G,Monneron D

更新日期：2007-06-01 00:00:00

abstract：:Interferons (IFNs) were considered for the treatment of patients with multiple sclerosis (MS) after the demonstration, based on small studies, of the efficacy of type IFN beta in decreasing the frequency of exacerbations in relapsing-remitting multiple sclerosis when administered intrathecally, subcutaneously, or intr...

journal_title：Biochimie

authors： Tourbah A,Lyon-Caen O

更新日期：2007-06-01 00:00:00

abstract：:Interferon-gamma is a key cytokine in tumor immunosurveillance. The recently described interferon-producing killer dendritic cell (IKDC), can be distinguished from other innate effectors by its ability to kill a large variety of tumor cells and to produce high amounts of interferon-gamma after encountering tumors in t...

journal_title：Biochimie

authors： Bonmort M,Ullrich E,Mignot G,Jacobs B,Chaput N,Zitvogel L

更新日期：2007-06-01 00:00:00

abstract：:The interferon (IFN) system is a major effector of the innate immunity that allows time for the subsequent establishment of an adaptive immune response against wide-range pathogens. The effectiveness of IFN to control initial infection requires the cooperation between several pathways induced in the target cells. Rece...

journal_title：Biochimie

authors： Degols G,Eldin P,Mechti N

更新日期：2007-06-01 00:00:00

abstract：:In 1956, when we started our collaboration, both Alick Isaacs and myself had done previous work on interference between inactive and active influenza viruses. We were aware of the state interference research had reached and of the two alternative explanations that had been envisaged. ...

journal_title：Biochimie

authors： Lindenmann J

更新日期：2007-06-01 00:00:00

abstract：:Interferons-alpha (IFN-alpha) are pleiotropic cytokines belonging to type I IFNs, extensively used in the treatment of patients with some types of cancer and viral disease. IFN-alpha can affect tumor cell functions by multiple mechanisms. In addition, these cytokines can promote the differentiation and activity of hos...

journal_title：Biochimie

authors： Ferrantini M,Capone I,Belardelli F

更新日期：2007-06-01 00:00:00

abstract：:The phosphotriesterase PTE, identified in the soil bacterium Pseudomonas diminuta, is thought to have evolved in the last several decades to degrade the pesticide paraoxon with proficiency approaching the limit of substrate diffusion (k(cat)/K(M) of 4 x 10(7)M(-1)s(-1)). It belongs to the amidohydrolase superfamily, b...

journal_title：Biochimie

authors： Porzio E,Merone L,Mandrich L,Rossi M,Manco G

更新日期：2007-05-01 00:00:00

abstract：:Ten new defensins have been isolated from seeds of Triticum kiharae and related species of the Triticum and Aegilops genera by a combination of chromatographic procedures including affinity-, size-exclusion, and reversed-phase high-performance liquid chromatography. Nine were completely sequenced and shown to represen...

journal_title：Biochimie

authors： Odintsova TI,Egorov TA,Musolyamov AKh,Odintsova MS,Pukhalsky VA,Grishin EV

更新日期：2007-05-01 00:00:00

abstract：:The exosome is a complex of eleven subunits in yeast, involved in RNA processing and degradation. Despite the extensive in vivo functional studies of the exosome, little information is yet available on the structure of the complex and on the RNase and RNA binding activities of the individual subunits. The current mode...

journal_title：Biochimie

authors： Luz JS,Tavares JR,Gonzales FA,Santos MC,Oliveira CC

更新日期：2007-05-01 00:00:00

abstract：:A depletion in long-chain polyunsaturated omega3 fatty acids may affect fuel homeostasis. In such a perspective, the present study deals mainly with the in vitro fate of D-[U-(14)C]glucose in hemidiaphragms, stretched soleus and plantaris muscle pieces obtained from normal and omega3-depleted rats (second generation) ...

journal_title：Biochimie

authors： Agascioglu E,Zhang Y,Sener A,Portois L,Chardigny JM,Malaisse WJ,Carpentier YA

更新日期：2007-03-01 00:00:00

abstract：:Cell sterol supply is subjected to tight negative feedback regulation through the SREBP pathway. Upon cholesterol depletion, SREBP transcription factors become activated by cleavage of a membrane bound precursor form, which stimulates the expression of the genes encoding proteins of the cholesterol synthesis pathway. ...

journal_title：Biochimie

authors： Robichon C,Dugail I

更新日期：2007-02-01 00:00:00

abstract：:In man the brain represents about 2% of the body weight, but contains 25% of the body's cholesterol. Cholesterol itself does not cross the blood-brain barrier and is synthesised in situ. Excess cholesterol from brain is exported in the form of oxysterols, or metabolised to steroids, which in contrast to cholesterol ca...

journal_title：Biochimie

authors： Wang Y,Karu K,Griffiths WJ

更新日期：2007-02-01 00:00:00

abstract：:Endothelial nitric oxide synthase (eNOS) plays a crucial role in the regulation of a variety of cardiovascular functions. Many studies have shown that dietary n-3 polyunsaturated fatty acids (PUFAs) have beneficial effects on coronary atherosclerosis. However, the mechanisms of n-3 PUFAs regulation in eNOS activation ...

journal_title：Biochimie

authors： Li Q,Zhang Q,Wang M,Zhao S,Ma J,Luo N,Li N,Li Y,Xu G,Li J

更新日期：2007-01-01 00:00:00

abstract：:The effect of alpha-tocopherol on the structure and thermotropic phase behaviour of 1-palmitoyl-2-oleoyl-phosphatidylethanolamine dispersed in excess water was examined by synchrotron X-ray diffraction and differential scanning calorimetry. Small- and wide-angle X-ray scattering intensity profiles were recorded from m...

journal_title：Biochimie

authors： Wang X,Quinn PJ

更新日期：2006-12-01 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：:Dimethyl selenide (DMSe) and dimethyl diselenide (DMDSe) emissions by soil samples spiked with selenite or (methyl)selenocysteine, with or without a supplement of nutrient broth and glucose were measured. DMSe was the main form of volatile Se produced, and was observed for both Se-substrates. DMDSe was only emitted fr...

journal_title：Biochimie

authors： Favre-Bonté S,Ranjard L,Champier L,Cournoyer B,Nazaret S

更新日期：2006-11-01 00:00:00

abstract：:Over the past 200 years emissions of toxic heavy metals have risen tremendously and significantly exceed those from natural sources for practically all metals. Uptake and accumulation by crop plants represents the main entry pathway for potentially health-threatening toxic metals into human and animal food. Of major c...

journal_title：Biochimie

authors： Clemens S

更新日期：2006-11-01 00:00:00

abstract：:NikR proteins are bacterial metallo-regulatory transcription factors that control the expression of the nickel uptake system and/or nickel containing enzymes such as urease, and are involved in the acid stress response. Here, a comparative study is reported on NikR from Helicobacter pylori (HpNikR) and Escherichia col...

journal_title：Biochimie

authors： Fauquant C,Diederix RE,Rodrigue A,Dian C,Kapp U,Terradot L,Mandrand-Berthelot MA,Michaud-Soret I

更新日期：2006-11-01 00:00:00

abstract：:Starting from total pancreatic mRNAs, turkey pancreatic lipase (TPL) cDNA was synthesized by RT-PCR and cloned into the PGEM-T vector. Amino acid sequence of the TPL is compared to that of human pancreatic lipase (HPL). A 3-D structure model of TPL was built using the 3-D structure of HPL as template, given the high a...

journal_title：Biochimie

authors： Fendri A,Frikha F,Miled N,Gargouri Y

更新日期：2006-10-01 00:00:00

abstract：:Versican and decorin, two proteoglycans (PGs) with contradictory roles in the pathophysiology of cancer, comprise important stromal components in many tumor types and play a crucial role in the progression of cancer. In this study, we provide direct evidence for a significant and stage-related accumulation of versican...

journal_title：Biochimie

authors： Skandalis SS,Theocharis AD,Papageorgakopoulou N,Vynios DH,Theocharis DA

更新日期：2006-09-01 00:00:00

abstract：:Conformational changes induced by the binding of nickel to horseradish peroxidase C (HRPC) were studied by electronic absorption spectroscopy, fluorescence spectroscopy and circular dichroism spectroscopy. Incubation of HRPC with various concentrations of Ni(2+) for 5 minutes resulted in changes in the enzyme absorpti...

journal_title：Biochimie

authors： Tayefi-Nasrabadi H,Keyhani E,Keyhani J

更新日期：2006-09-01 00:00:00