Abstract:
:Certain transcription factors have recently been shown to interact with DNA in living cells, through very short binding cycles, contrasting with the data previously obtained in vitro, and with the view of a stepwise building of transcription initiation complexes. These short cycles are triggered by active dissociation mechanisms, suggesting that they ensure important biological functions. Various interpretations of these observations have been proposed, including a mechanism allowing the cell to switch off gene expression after removal of the inducer, or increasing the availability of free transcription factors. The interpretation examined here is that the brevity of the transcription factor turnovers favors the determinism of gene expression. For the genes with open chromatin and subject to this mode of interaction, the differential dynamics between promoter occupancy and the following processes mediating protein accumulation, can be essential for the dosage of gene expression. Biological activities and quantitative conditions allowing to increase the frequency of DNA-protein binding cycles are proposed. The unexpected dynamics of certain DNA-protein interactions can provide a concrete example of the notion of apparent gradation of single-site occupancy, which is a general solution allowing to extend the mass action determinism to low copy number molecules.
journal_name
Biochimiejournal_title
Biochimieauthors
Michel Ddoi
10.1016/j.biochi.2009.03.022subject
Has Abstractpub_date
2009-07-01 00:00:00pages
933-41issue
7eissn
0300-9084issn
1638-6183pii
S0300-9084(09)00101-1journal_volume
91pub_type
杂志文章相关文献
BIOCHIMIE文献大全abstract::Extracellular Hsp70 (eHsp70) can activate immune cells via Toll-like receptors (TLR) 2 and 4, and induce cytokine synthesis. The aim of this study was to explore inflammation-associated effects of eHsp70 alone and in combination with cigarette smoke extract (CSE) in primary bronchial epithelial cells. We assessed IL-6...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2018.09.010
更新日期:2019-01-01 00:00:00
abstract::Diacylglycerol kinase (DGK) phosphorylates diacylglycerol to produce phosphatidic acid (PA). The η isozyme of DGK is abundantly expressed in C2C12 myoblasts. However, the role of DGKη in skeletal muscle cells remains unknown. In the present study, we showed that DGKη was downregulated at an early stage of myogenic dif...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2020.07.018
更新日期:2020-10-01 00:00:00
abstract::Long non-coding RNAs constitute the most abundant part of the transcribed mammalian genome. lncRNAs affect all essential processes in the living cell including transcription, splicing, translation, replication, shaping of chromatin and post translational modification of proteins. Alterations in lncRNA expression have ...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/j.biochi.2016.06.007
更新日期:2016-12-01 00:00:00
abstract::The structure of the F0 part of ATP synthases from E. coli and Neurospora crassa was analyzed by hydrophobic surface labeling with [125I]TID. In the E. coli F0 all three subunits were freely accessible to the reagent, suggesting that these subunits are independently integrated in the membrane. Labeled amino acid resid...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/s0300-9084(86)80010-4
更新日期:1986-03-01 00:00:00
abstract::Plant vacuolar invertases, which belong to family 32 of glycoside hydrolases (GH32), are key enzymes in sugar metabolism. They hydrolyse sucrose into glucose and fructose. The cDNA encoding a vacuolar invertase from Solanum lycopersicum (TIV-1) was cloned and heterologously expressed in Pichia pastoris. The functional...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2013.12.013
更新日期:2014-06-01 00:00:00
abstract::Cell walls of flocculent strains (0006) and non flocculent strains (0019) of Saccharomyces uvarum (Carlsbergensis), grown in different media and taken in both growth and stationary phases, were treated with water and with 2 per cent (W/V) potassium hydroxide. This treatment yielded four fractions (FI, FII, FIII and FR...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(81)80055-7
更新日期:1981-07-01 00:00:00
abstract::Analysis of the nucleotide sequence of 1,400 transfer RNAs has revealed the imprint of a prototypic genetic code in position 3-4-5 of the acceptor stem. It appears only in the transfer RNAs for the primordial amino acids ie those found by chemical condensation of a nitrogen-methane-water-ammonia mixture. The model for...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/0300-9084(90)90033-d
更新日期:1990-05-01 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
pub_type: 杂志文章
doi:10.1016/j.biochi.2008.01.008
更新日期:2008-05-01 00:00:00
abstract::We have proposed an allosteric ATP inhibition mechanism of Pfk-2 determining the structure of different forms of the enzyme together with a kinetic enzyme analysis. Here we complement the mechanism by using hybrid oligomers of the homodimeric enzyme to get insights about the allosteric communication pathways between t...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2016.08.013
更新日期:2016-09-01 00:00:00
abstract::RNA editing alters genomically encoded cytidines to uridines posttranscriptionally in higher plant mitochondria. Most of these editing events occur in translated regions and consequently alter the amino acid sequence. In Oenothera berteriana more than 500 editing sites have been detected and the total number of editin...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/0300-9084(96)88108-9
更新日期:1995-01-01 00:00:00
abstract::We have purified, by a three step procedure, a yeast C-nitrosoreductase and studied its action on p-nitroso-N,N-dimethylaniline. Microcalorimetric measurements performed on the microcalorimeter LKB "batch", have been given the number of protons exchanged during the reaction : four protons are involved. Two are given b...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(75)80132-5
更新日期:1975-01-01 00:00:00
abstract::Four full-length cDNAs encoding the precursors of four K(+)-toxin-like peptides (named BmKK(1), BmKK(2), BmKK(3) and BmmKK(4), respectively) were first isolated from a venom gland cDNA library of the Chinese scorpion Buthus martensii Karsch. The deduced precursors of BmKK(1), BmKK(2) and BmKK(3) are all made of 54 ami...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(01)01326-8
更新日期:2001-09-01 00:00:00
abstract::Streptomyces sp. 139 produces a novel exopolysaccharide (EPS) designated Ebosin which can bind IL-1R specifically and exhibits anti-rheumatic arthritis activity in vivo. With the Ebosin biosynthesis gene cluster (ste) consisting of 27 ORFs identified previously the focus of this study was to characterize the protein e...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2011.04.014
更新日期:2011-09-01 00:00:00
abstract::The efficiency of oxidative phosphorylation was estimated in intact resting cells of Escherichia coli K 12, strain PA 601 (chl-s) and its chl-r mutants, all of them grown anaerobically in the presence of nitrate. The oxidation of endogenous NADH in intact chl-s cells was accompanied by the formation of ATP whatever th...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(77)80316-7
更新日期:1977-01-01 00:00:00
abstract::It has been shown that two Proteus morganii strains produce an inducible cephalosporinase. No significative difference was shown between them: they present the same isoelectric poit: 8,3 and very similar kinetic constants. The parameter tau, proportional to the half life of antibiotic at low concentration, in presence...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(76)80086-7
更新日期:1976-11-13 00:00:00
abstract::The quantitative formalism called Metabolic Control Theory makes it possible to be precise in discussions of metabolic control. To illustrate this, I will mention 2 experimental systems where free energy is converted from one form to another, i.e., bacteriorhodopsin liposomes and mitochondrial oxidative phosphorylatio...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/0300-9084(89)90071-0
更新日期:1989-08-01 00:00:00
abstract::After the assessment of the antitumor activity of the anthracycline pigments, the S peucetius group of metabolites was discovered and eventually doxorubicin, a major anticancer agent of established clinical usefulness was developed in the early seventies. A second generation of compounds followed, represented mainly b...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/s0300-9084(98)80003-5
更新日期:1998-03-01 00:00:00
abstract::The rate of hydrolysis of long chain triglycerides by pure bovine pancreatic lipase has been determined in the presence of variable amounts of bile salts and colipase. Cofactor-free lipase is strongly inhibited by sodium taurodesoxycholate and by mixed bovine bile salts at concentrations higher than the critical micel...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(76)80572-x
更新日期:1975-01-01 00:00:00
abstract::Pseudouridine [Ψ] is a frequent base modification in the ribosomal RNA [rRNA] and may be involved in the modulation of the conformational flexibility of rRNA helix-loop structures during protein synthesis. Helix 69 of 23S rRNA contains pseudouridines at the positions 1911, 1915 and 1917 which are formed by the helix 6...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2010.12.018
更新日期:2011-05-01 00:00:00
abstract::In order to identify conserved potential secondary structures within translational start sites, mRNA sequences derived from different species were studied with programs able to depict such features. The potential secondary structure of 71 bases around the initiator AUG or AUGs in the coding sequences of 290 eukaryotic...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/0300-9084(94)90120-1
更新日期:1994-01-01 00:00:00
abstract::In order to study the relationship between bile cholesterol and free cholesterol carried by high and low density lipoproteins (HDL and LDL), 10 male Wistar rats, 11 weeks old and fed with a standard diet were divided into 3 groups which received an intravenous infusion (jugular vein) of either LDL, HDL or liposomes. L...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/0300-9084(87)90270-7
更新日期:1987-01-01 00:00:00
abstract::Over-expression of efflux transporter P-glycoprotein (PgP) encoded by ABCB1 gene has been implicated in poor responsive epilepsy. Several genetic variants have been shown to influence the expression levels of P-glycoprotein. The aim of the present study was to investigate the role of ABCB1 polymorphisms: C1236T, G2677...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2010.04.008
更新日期:2010-09-01 00:00:00
abstract::Here we report two novel 17-mer amidated linear peptides (TsAP-1 and TsAP-2) whose structures were deduced from cDNAs cloned from a venom-derived cDNA library of the Brazilian yellow scorpion, Tityus serrulatus. Both mature peptides were structurally-characterised following their location in chromatographic fractions ...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2013.06.003
更新日期:2013-09-01 00:00:00
abstract::Zika and Dengue viruses have attracted substantial attention from researchers in light of recent outbreaks of Dengue fever and increases in cases of congenital microcephaly in areas with Zika incidence. This review summarizes the current state of knowledge about Zika and Dengue proteases. These enzymes have several in...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/j.biochi.2019.05.004
更新日期:2019-11-01 00:00:00
abstract::Replication protein A (RPA) is a heterotrimeric single-stranded DNA binding protein whose role in DNA replication, recombination and repair has been mainly elucidated through in vitro biochemical studies utilizing the mammalian complex. However, the identification of homologs of all three subunits in Saccharomyces cer...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(00)00183-8
更新日期:2000-01-01 00:00:00
abstract::NDPK-A, NDPK-B and NDPK-D are three enzymes which belong to the NDPK group I isoforms and are not only involved in metabolism process but also in transcriptional regulation, DNA cleavage, histidine protein kinase activity and metastasis development. Those enzymes were reported to bind to membranes either in mitochondr...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2014.06.025
更新日期:2014-10-01 00:00:00
abstract::In vertebrates, mannose 6-phosphate receptors [MPR300 (Mr 300 kDa) and MPR46 (Mr 46 kDa)] are highly conserved transmembrane glycoproteins that mediate transport of lysosomal enzymes to lysosomes. Our studies have revealed the appearance of these putative receptors in invertebrates such as the molluscs and deuterostom...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/j.biochi.2012.02.007
更新日期:2012-05-01 00:00:00
abstract::Tri(n-butyl)phosphate (TNBP) and sodium cholate (SC) mixtures have been used to inactivate lipid-enveloped viruses like HIV and hepatitis B. We exploited the use of this combination to purify fibroblast growth factor-2 (FGF-2) from human placenta. Human placentas were extracted in the presence of 0.3% TNBP/0.2% SC and...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/0300-9084(96)89504-6
更新日期:1996-01-01 00:00:00
abstract::Over the last couple of decades, the PPAR family of transcription factors has received much attention from the pharmaceutical industry due to their profound ability to improve glucose and lipid metabolism upon agonist activation. However, more recently the interest in these nuclear receptors has faded because several ...
journal_title:Biochimie
pub_type: 杂志文章,评审
doi:10.1016/j.biochi.2016.10.017
更新日期:2017-05-01 00:00:00
abstract::Estradiol-PAB-cellulose, an easily prepared adsorbent, has been proposed to purify the uterine estradiol receptor according to the principle of biospecific affinity chromatography. It apparently removes all hormone binding sites when cytosol preparations are incubated with it. A systematic study of this adsorbent was ...
journal_title:Biochimie
pub_type: 杂志文章
doi:10.1016/s0300-9084(76)80317-3
更新日期:1976-01-01 00:00:00