... solution, 500 mg of trypsin inhibitor, and 100 mg of RNase A, prevented dye binding to double-stranded RNA Third, the use of solution C (pH 7.6), containing 1,000 ml of stock solution, 416 mg of propidium ... number of DNA sites available for fluorochrome binding, thus resulting in an apparently sub-haploid DNA content [9] The appearance of round spermatids in weeks old rats marked the beginning of the ... changes in PIstained testicular cells of growing SD rats was characterized by FCM Because of the heterogeneity of cell classes involved in spermatogenesis, a detail assessment of changes in cell...
Ngày tải lên: 07/08/2014, 14:23
... detected on this sample, allowing the distinction of 22 haplotypes belonging to the three Mediterranean cpDNA lineages known as E1, E2 and E3 The discriminating power of cpDNA variation was particularly ... distinct cpDNA lineage Our objective was to develop new markers for a rapid genomic profiling (by Multiplex PCRs) of cpDNA haplotypes in the Mediterranean olive tree Results: Eight complete cpDNA ... represents one of the major cultivated species in the Mediterranean area [9] The origins of this species have been recently investigated using different molecular techniques, including looking at organelle...
Ngày tải lên: 11/08/2014, 11:20
Báo cáo sinh học: " Biodistribution and blood clearance of plasmid DNA administered in arginine peptide complexes" docx
... presence of plasmid DNA was determined at select times by using nested PCR analysis A PCR band of plasmid DNA was Figure Effects of DNA dose on plasmid DNA expression after delivery in arginine /DNA ... was evaluated in vivo The biodistribution of DNA complexes with arginine peptide after intraperitoneal administration was initially investigated using PCR analysis, indicating that intraperitoneally ... with heparin (Sigma, St Louis, MO, USA) to prevent aggregation Isolation of DNA and RNA At various time points following intraperitoneal administration of arginine /DNA complexes, samples of several...
Ngày tải lên: 14/08/2014, 19:22
Báo cáo y học: "Taxonomic distribution of large DNA viruses in the sea" pptx
... to find intein insertions by the TIGRFAM profiles TIGR01445 (intein amino terminus) and TIGR01443 (intein carboxyl terminus) [65], but none of these fragments had a detectable intein domain In ... (composed of 199 branches including internal ones) was also reduced by pruning branches leading to the non-selected leaves using BAOBAB [75] The reduced reference tree has 99 branches (including internal ... average number of reads overlapping with a part of a contig where a PolB domain was encoded, by taking into account the length of the PolB domain (as defined by the Pfam hit) and the length of the contig...
Ngày tải lên: 14/08/2014, 20:22
báo cáo khoa học: " Transcription profiles of mitochondrial genes correlate with mitochondrial DNA haplotypes in a natural population of Silene vulgaris" doc
... its siblings in mt DNA Southern-RFLP patterns, indicating, perhaps, co-paternal inheritance of both the mt DNA and transcriptional machinery (figure 5c) Similar patterns of transcription profiles ... variation of mt DNA markers in the offspring under study Within-sibship variation was attributable to paternal inheritance, lineage sorting or maybe to the rearrangement of mt DNA by recombination ... The branches differing in Southern-RFLP profiles produced flowers of the same gender Transcription profiles of mt genes To investigate variation in mt transcript patterns in S vulgaris we performed...
Ngày tải lên: 12/08/2014, 03:21
Annual and Diurnal Profiles of Cryptosporidium and Giardia in River Water in Japan
... diurnal profiles of Cryptosporidium and Giardia in river water which is used for drinking water sources For this purpose, frequent monitoring of protozoans was performed in tributary rivers of the ... basin in Japan where the surface water is utilized for the main production of drinking water for people living in the Tokyo metropolitan area In addition, the relationship between microbial indicators ... the discharge point of treated sewage wastewater Sampling sites for investigating annual profiles Sampling sites for investigating diurnal profiles River flow Tone River Site A Site B Tone Diversion...
Ngày tải lên: 05/09/2013, 10:17
Báo cáo khoa học: Assembly of nuclear DNA-encoded subunits into mitochondrial complex IV, and their preferential integration into supercomplex forms in patient mitochondria doc
... seen in mammalian mitochondria By tracking the subunit composition of subcomplexes using translational inhibitors and metabolic labeling of mtDNAencoded proteins, a model for the assembly of human ... 35S-labeled Cox6a for increasing times in the presence or absence of a membrane potential (Dwm) Each sample was treated with proteinase K before being solubilized in digitonin-containing buffer and ... early stages of assembly that involve formation of the catalytic core consisting of the mtDNA-encoded subunits CO1, CO2 and CO3 Thus details of the latter stages in which the majority of nDNA-encoded...
Ngày tải lên: 07/03/2014, 00:20
Báo cáo khoa học: DNA-binding characteristics of the regulator SenR in response to phosphorylation by the sensor histidine autokinase SenS from Streptomyces reticuli doc
... the SenR-binding sites To identify the exact DNA- binding site(s) within up-furS1 and up-hbpS1, DNaseI footprinting experiTable Relative binding affinity of wild-type and mutated SenR proteins for ... use of DNA fragments lacking either binding site II, binding site III or both showed that each of them is necessary for specific targeting by SenR Further single replacements within each binding ... upstream of hbpS and ending at the 5¢-end of binding site III, and containing a deleted binding site II) To determine whether SenR had already been in a phosphorylated form within E coli, the obtained...
Ngày tải lên: 07/03/2014, 10:20
Báo cáo khoa học: Origins of DNA replication in the three domains of life pdf
... and 1L8Q (DnaA) The AAA+ domains of both proteins are shown in cyan with ADP indicated in red The helix-turn-helix (HTH)-containing DNA binding domain of DnaA is in green and the winged helix ... position of the origin of replication in Pyrococcus, providing the first experimental proof of a localized origin of replication in the archaea [52] Interestingly, in a situation reminiscent of that in ... structures of DnaA [59] and Orc1 ⁄ Cdc6 proteins [60,61] As can be seen in Fig 4, both proteins possess N-terminal AAA+ domains and C-terminal DNA binding domains (DBDs) In DnaA, the DBD contains a...
Ngày tải lên: 07/03/2014, 21:20
Báo cáo khoa học: Molecular dynamics structures of peptide nucleic acidÆDNA hybrid in the wild-type and mutated alleles of Ki-ras proto-oncogene ppt
... domain Discussion Base pair mismatch in duplex DNA contributes an element of instability resulting in lowering of the melting temperature and increase in free energy Surprisingly, the presence of ... destabilization and hence, diminution of the melting temperature (Tm) in the former Base stacking in the vicinity of A C mismatch in PNA DNA and DNA duplexes Intra strand base stacking at the AC(6–7) (Fig ... 2005 FEBS T Rathinavelan and N Yathindra Effect of A .C mismatch in PNA DNA and DNA duplexes Variation of A C mismatch hydrogen bond in PNA DNA and DNA duplexes Fig Stacking interactions seen...
Ngày tải lên: 07/03/2014, 21:20
Báo cáo khoa học: Drosophila proteins involved in metabolism of uracil-DNA possess different types of nuclear localization signals pdf
... the importin b binding (IBB) domain in its N-terminus and the C-terminal NLSbinding domain In the absence of importin b, an auto-inhibiting part of the IBB domain forms an intramolecular interaction ... NLS-binding domain, preventing the association with NLS on the cargo protein Thus, the presence or absence of importin b regulates the NLS binding ability of importin a The relatively large NLS-binding ... Characterization of NLS segments molecular surface The NLS peptide of the cargo binds in extended conformation to the binding pockets of the superhelical surface of importin a These binding pockets contain...
Ngày tải lên: 15/03/2014, 11:20
Báo cáo khoa học: Antioxidant defences and homeostasis of reactive oxygen species in different human mitochondrial DNA-depleted cell lines pot
... proteins causing half-maximal inhibition of the rate of NBT reduction GST activity was assayed in the supernatant of cell lysates, as described [39] Briefly, 150 lg protein were incubated in 50 ... function normally in the absence of mtDNA These findings are in line with results found in hepatoma-derived Hep1q0 cells [16] ROS When DCF signal was assessed as a direct index of ROS, all of the q0 cells ... quantities of protein utilizing the principle of protein-dye binding Anal Biochem 72, 248–254 Prohaska, J.R & Ganther, H.E (1976) Selenium and glutathione peroxidase in developing rat brain J Neurochem...
Ngày tải lên: 16/03/2014, 18:20
Báo cáo khoa học: Initiation of JC virus DNA replication in vitro by human and mouse DNA polymerase a-primase ppt
... the synthesis of products greater than four nucleotides in length Murine DNA polymerase a-primase is absolutely inactive in initiating SV40 DNA replication in an assay consisting of purified enzymes ... facilitate initiation of replication in vivo but not in vitro, perhaps by alleviating nucleosome repression or by assisting in origin unwinding under conditions of altered template DNA superhelicity ... liquid scintillation counting [46] Results Replication of JCV DNA in crude cell extracts with recombinant human and murine DNA polymerase a-primase Previously we reported the establishment of in vitro...
Ngày tải lên: 17/03/2014, 03:20
Báo cáo Y học: DNA supercoiling in Escherichia coli is under tight and subtle homeostatic control, involving gene-expression and metabolic regulation of both topoisomerase I and DNA gyrase docx
... previously [17] Supercoiling assay DNA supercoiling was assessed in terms of the linking number of intracellular plasmid pBR322 [18] DNA supercoiling was expressed as the active linking number, aLk, ... esupercoilingI and esupercoiling , re¯ecting the sensitivity of transcription of topoisomerase I and DNA gyrase for DNA supercoiling Certain simpli®cations were made in [25], i.e grouping of transcription ... fold increase upon inhibition of gyrase with coumermycin [27] Our results are in good agreement with this: Extrapolation of our ®ts in Fig to an aLk of (corresponding to coumermycin inhibition) indicates...
Ngày tải lên: 18/03/2014, 01:20
Báo cáo khoa học: Determination of the reopening temperature of a DNA hairpin structure in vitro pptx
... suggesting that it can be useful for evaluating the reopening temperature for a DNA hairpin in a local region of DNA, and for comparing the reopening temperatures for a group of hairpin structures ... hairpin-forming region (as indicated in Fig 1A) can indeed affect primer DNA primer extension, most likely due to hairpin structure formation (Fig 1B) Measuring the reopening temperature for a single ... measuring the reopening temperature for a single type of hairpin structure in DNA has been established The reopening temperature obtained experimentally was fairly close to the Tm values obtained...
Ngày tải lên: 23/03/2014, 13:20
Báo cáo Y học: The N-terminus of m5C-DNA methyltransferase Msp I is involved in its topoisomerase activity docx
... quantities of protein utilizing the principle of protein-dye binding Anal Biochem 72, 248–254 25 Jost, J.P & Saluz, H.P (1991) A Laboratory Guide to in Vitro Studies of Protein DNA Interactions ... multiple Zn-binding domains at the N terminus of human DNA- (cytosine-5) methyltransferase: modulating the property of a DNA- binding domain by contiguous Zn-binding motifs J Mol Biol 257, 935–948 15 ... mechanism-based crosslinking of Dcm DNA cytosine-C5 methyltransferase of E coli K-12 to synthetic oligonucleotides containing 5-fluoro-2¢-deoxycytidine Nucleic Acids Res 2, 303–309 16 Szilak, L., Finta, C.,...
Ngày tải lên: 24/03/2014, 00:21
Báo cáo Y học: Proteolytic action of duodenase is required to induce DNA synthesis in pulmonary artery fibroblasts A role for phosphoinositide 3-kinase pot
... Employing a range of selective inhibitors, we investigated the roles of PtdIns 3-kinase, MEK1/ERK, protein kinase C and pertussis toxin-sensitive G-proteins Only partial inhibition of DNA synthesis ... concur with our findings that inhibition of protein kinase C results in partial inhibition of DNA synthesis To date, identification of downstream signalling pathways for PARs have principally concentrated ... localization of duodenase in bovine intestine and lung Representative positively stained mast cells are indicated by large arrows Panels (a–e) show localization of duodenase in bovine jejenum In panel...
Ngày tải lên: 24/03/2014, 03:21
THE RELEVANCE OF FORENSIC ACCOUNTING TO FINANCIAL CRIMES IN PRIVATE AND PUBLIC SECTORS OF THIRD WORLD ECONOMIES: A STUDY FROM NIGERIA potx
... Organization of Forensic Accounting Profession Forensic Accounting is an offshoot of the general professional accounting and it is affiliated to professional accounting institutes For the purpose of practice, ... Reviewing of the relevant documentation to form an initial assessment of the case in an identified area of loss Examination for discovering, including the formulation of the act regarding the financial ... refer to forensic scientists as examiners and interpreters of evidence and facts in legal cases that also offers expert opinions regarding their findings in court of law The science in question...
Ngày tải lên: 29/03/2014, 14:20
Mining Association Rules between Sets of Items in Large Databases pptx
... factor of c Given the set of transactions T , we are interested in generating all rules that satisfy certain additional constraints of two di erent forms: Syntactic Constraints: These constraints involve ... s | the union of items in the consequent and antecedent of the rule is present in a minimum of s of transactions in the database Minimum dence c | at least c of transactions in the database ... database mining is an important new application area for databases, combining commercial interest with intriguing research questions Acknowledgments We thank Mike Monnelly for his help in obtaining...
Ngày tải lên: 30/03/2014, 13:20
Báo cáo hóa học: " Role of protease-activated receptor-2 on cell death and DNA fragmentation in Helicobacter pylori-infected gastric epithelial cells" ppt
... membranes (Amersham Inc., Arlington Heights, IL, USA) by electroblotting The transfer of protein and equality of loading in all lanes was verified using reversible staining with Ponceau S Cell culture ... concentration-dependently H pylori-induced DNA fragmentations increased by treatment of 0.5 μM of SBTI (Figure 4B) These results suggest that inhibition of trypsin activity, which induces the suppression of PAR-2 activity, ... pylori- induced cell death and DNA fragmentation Soybean trypsin inhibitor (SBTI) suppresses H pyloriinduced activation of MAPK in gastric epithelial cells H pylori -induced increases in phospho-specific...
Ngày tải lên: 18/06/2014, 16:20