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Deoxynucleotides can replace dideoxynucleotides in minisequencing by arrayed primer extension | Archive | ... Scientific literature describing arrayed primer extension and other array-based minisequencing technologies consistently cite the requirement for four fluorescent dideoxynucleotides (with concomitant absence/inactivation of deoxynucleotides) to ensure single-base extension and thus sequence-specific intensity data that can be interpreted as a base call or genotype. We present compelling evidence thatfluorescent deoxynucleotides can reliably be used in microarray minisequencing experiments, generating fluorescent sequence extension intensity profiles that are homologous to the single-base extensions obtained with terminator dideoxynucleotides. Due to the almost 10-fold higher costs (and limited fluorophore choice) of many commercially available fluorescent dideoxynucleotides, compared to fluorescent deoxynucleotides, as well as other potentially constraining intellectual property and licensing issues, this hitherto dismissed microarray chemistry represents an important reevaluation in the field of array-based genotyping and related enzymology. www.biotechniques.com /default.asp?page=article_archive&subsection=article_display&id=112111   (241 words)

DNA sequencing - Wikipedia, the free encyclopedia The oligonucleotide primer is extended using a DNA polymerase, an enzyme that replicates DNA. Included with the primer and DNA polymerase are the four deoxynucleotide bases (DNA building blocks), along with a low concentration of a chain terminating nucleotide (most commonly a di-deoxynucleotide). As the DNA strand is elongated the DNA polymerase catalyses the joining of deoxynucleotides to the corresponding bases. en.wikipedia.org /wiki/Sanger_sequencing   (1646 words)

SciTech DNA Tutorial: Jmol Conversion Nucleotides and deoxynucleotides are the building blocks that comprise the DNA and RNA polymers. Nucleotides and deoxynucleotides can be divided into two classes: those with a double ring base known as the purines, and those with a single ring base known as the pyrimidines. DNA is composed of deoxynucleotides connected by phosphodiester bonds. www.sciencetechnologies.com /examples/example7/example7   (1056 words)

A computational model of mitochondrial deoxynucleotide metabolism and DNA replication -- Bradshaw and Samuels 288 (5): ... The cytoplasmic deoxynucleotide concentrations were varied proportionately throughout the range shown for each cell type using the definitions in Table 5. Cytoplasmic deoxynucleotide levels were set as shown in Table 5 to represent the different cell types. The differential equations for the mitochondrial thymidine deoxynucleotide ajpcell.physiology.org /cgi/content/full/288/5/C989   (7113 words)

World Intellectual Property Organization (WO/2006/056142) CPG SINGLE-STRAND DEOXYNUCLEOTIDES FOR USE AS ADJUVANT The present invention provides an adjuvant which comprises at least one of single-strand deoxynucleotides with one or more CpG dinucleotides. The adjuvant can be used with hydrophobia vaccine, hepatitis B vaccine or other vaccines and can markedly reinforce the immunological effects of vaccines mentioned above. www.wipo.int /pctdb/en/ia.jsp?IA=CN2005002047&REF=RSS   (350 words)

Patent 6,147,056 The invention further comprises methods of prophylaxis against skin cancer or reduction in the likelihood of development of skin cancer, as well as reduction of severity of photoaging resulting from sun exposure, in a mammal, including humans. The methods comprise contacting cells (or introducing into cells) of a mammal with single-stranded DNA fragments, (e.g., oligonucleotides or polynucleotides) deoxynucleotides, dinucleotides, dinucleotide dimers or a mixture thereof, such that the DNA fragments, deoxynucleotides, dinucleotides, or dinucleotide dimers are available to the cells. The fragments, deoxynucleotides or dinucleotides, or agent that increase p53 activity resulting in an increase in nucleotide excision repair, can be introduced topically, orally, by aerosol, or by any other appropriate means, such as by instillation. www.pharmcast.com /Patents/November2000/111400OG/6147056_DNA111400.htm   (441 words)

Chapter 2   (Site not responding. Last check: 2007-10-13) 2b) Draw two deoxynucleotides, one on top of the other (similar to the way they are in the left-hand side of Fig. 2-3) but in such a way that the phosphate group of the bottom deoxynucleotide is between the two sugars and one of the phosphate -OH is pointing up (toward the sugar of the top deoxynucleotide). Next, imagine a condensation reaction in which a water molecule (H2O) is formed from the phosphate -OH and the H in sugar position 3'; this leaves the phosphate of the bottom deoxynucleotide attached to the 3' O of the sugar. www.unc.edu /courses/2003ss1/biol/050/001/chapter_2.htm   (2154 words)

The human DINB1 gene encodes the DNA polymerase Poltheta -- Johnson et al. 97 (8): 3838 -- Proceedings of the National ... DNA polymerase fidelity was calculated from deoxynucleotide incorporation kinetics as described (19, 20). Deoxynucleotide incorporation and DNA polymerase activity of hDinB1. (A) A 0.5 nM concentration of hDinB1 protein was incubated with 10 nM DNA substrate and with a 10 µM concentration of a single deoxynucleotide as indicated. www.pnas.org /cgi/content/full/97/8/3838   (4397 words)

Yeast Rev1 Protein Is a G Template-specific DNA Polymerase -- Haracska et al. 277 (18): 15546 -- Journal of Biological ... each) or all four deoxynucleotides plus 100-fold excess of nonradiolabeled DNA substrate as a trap followed by 10-min incubation at 30 °C. As the control to demonstrate the effectiveness of the trap, Rev1 was preincubated with the DNA trap and the primer-template substrate before the addition of dNTPs (lane 15). The percentage of Rev1 molecules incorporating at least n deoxynucleotides was calculated from quantitation of the intensity of each of the bands in Fig. The percentage of active Rev1 molecules was calculated from the intensities of bands in Fig. www.jbc.org /cgi/content/full/277/18/15546   (4175 words)

Terminal nucleotides of the preintegrative linear form of HIV-1 DNA deduced from the sequence of circular DNA junctions. For the avian and murine C-type retroviruses, the dinucleotide sequences reside two deoxynucleotides (usually AA and TT) from the LTR ends of unintegrated viral DNA (5' AATG...//...CATT3'). The number and identity of terminal deoxynucleotides in unintegrated HIV-1 linear DNA that extend beyond the conserved dinucleotides have not been determined. However, they had been presumed to consist of a single nucleotide (5'CTG...//...CAG3') on each end, based on inspection of the nucleotide sequence between the end of the supposed primer sites for retroviral DNA synthesis and the conserved proviral termini. www.aegis.com /aidsline/1990/nov/M90B0597.html   (466 words)

rDNA: Sequencing by the Enzymatic Method Not only are all four normal deoxynucleotide triphosphates present within the reaction mixture (dATP, dTTP, dGTP, dCTP), but also present are dideoxynucleotides, one of each type (eg. Dideoxynucleotides are deoxynucleotides which lack hydroxyl groups at both the 2' and 3' positions, therefore cannot extend the chain by linking to another nucleotide. In addition, either the primer, used to start the reaction, or one of the normal deoxynucleotides, is labelled; this could be through a radioactive atom or through a fluorescent tag. www.rvc.ac.uk /review/DNA_1/2_DNA_Sequencing.cfm   (314 words)

process of dna replication for you at cd replication   (Site not responding. Last check: 2007-10-13) When the replication process is complete two DNA molecules ' identical to each other and identical to the and replace them with the deoxynucleotides that make up DNA. Here is a link with a diagram of the overall process of DNA replication of and replace them with the deoxynucleotides that make up DNA. Here is a link with a diagram of the overall process of DNA replication of copy and transmit its genetic information to all of its progeny. replication.wheelfortune.info /process-of-dna-replication   (506 words)

RNA world - EvoWiki   (Site not responding. Last check: 2007-10-13) But despite DNA's greater stability, there is an abundance of evidence that it was RNA that had come before DNA, and not DNA before RNA. The deoxynucleotides are made from nucleotides with ribonucleotide reductases (RNR's), producing uracil-DNA or u-DNA. The uracil is then converted to thymine by adding a methyl group, making thymine-DNA or t-DNA, the kind that is actually used. wiki.cotch.net /index.php/RNA_world   (1347 words)

SBNet - H. Eklund   (Site not responding. Last check: 2007-10-13) The overall enzymatic activity is regulated by ATP (activation) and dATP (feedback inhibition at high concentrations, except for viruses). RNR has a unique additional allosteric regulation since triphosphate nucleotides regulate the substrate specificity in such a way that a balanced supply of the different deoxynucleotides is present during DNA synthesis. The reduction of a ribonucleotide to a deoxyribonucleotide is a chemically difficult reaction to perform and the reaction has to be initiated by an organic free radical. xray.bmc.uu.se /sbnet/eklund.html   (3690 words)

Sequencing Protocols   (Site not responding. Last check: 2007-10-13) Step 1: A DNA sequence of interest is first amplified using the polymerase chain reaction (PCR). Taq DNA polymerase (a heat-resistant enzyme that catalyzes the addition of deoxynucleotides) A primer (a short single-stranded DNA sequence that base pairs to the DNA sequence of interest and serves as a site from which to add complementary bases.) www.bscs.org /onco/sprotocol.htm   (318 words)

Biocompare - Product Literature Center Assuring the highest possible functionality, PCR-Grade Deoxynucleotides are function-tested in a RT-PCR assay, the most sensitive and demanding amplification assay. PCR-Grade Deoxynucleotides are supplied as sodium salts in highly purified water at pH 8.3 without the addition of additives or stabilizers. Since most amplification reactions are performed between pH 8 and pH 9, PCR-Grade Deoxynucleotides are — compared to deoxynucleotides stored at pH 7 or 7,5 — more resistant to chemical stress caused by pH shifts (Figure 3). www.biocompare.com /techart.asp?id=758   (572 words)

Joint Meeting Immunology Duesseldorf 2000 - Abstract R.18   (Site not responding. Last check: 2007-10-13) Eradication of established tumors by peritumoral injection of CpG-oligo deoxynucleotides Thus, strategies are required that induce a successful anti-tumor response. Unmethylated CpG containing oligo deoxynucleotides (CpG-ODN) are known to induce Th1 responses, activation of subsets of immune cells. www.uni-duesseldorf.de /dgfi2000/abstract/r18.htm   (311 words)

Nucleotides DNA (deoxyribonucleic acid) is a polymer of deoxynucleotides Both cellular and ingested nucleic acids are degraded, their products being turned over, or salvaged, or excreted from the body. We will describe the mechanism of this effect later on, when we look at the formation of deoxynucleotides. www.rpi.edu /dept/bcbp/molbiochem/BiochSci/sbello/nucleotides.htm   (4977 words)

Davidson College: WWW Homepage Template for Biology Students C, and formation of a new DNA strand (complementary to the template) using deoxynucleotides. 3) Deoxynucleotides: components necessary to DNA synthesis (equal amounts of Adenine, Cytosine, Guanine, and Thymine deoxynucleotides should be used). 5) Taq Polymerase: Heat resistant enzyme that adds deoxynucleotides complementarily to the DNA template strand. www.bio.davidson.edu /Courses/Molbio/MolStudents/01jerusin/pcr.html   (584 words)

Differential Incorporation and Removal of Antiviral Deoxynucleotides by Human DNA Polymerase gamma -- Lim and Copeland ... Differential Incorporation and Removal of Antiviral Deoxynucleotides by Human DNA Polymerase gamma -- Lim and Copeland 276 (26): 23616 -- Journal of Biological Chemistry Articles by Lim, S. Articles by Copeland, W. Differential Incorporation and Removal of Antiviral Deoxynucleotides by Human DNA Polymerase From the Laboratory of Molecular Genetics, NIEHS, National Institutes of Health, Research Triangle Park, North Carolina 27709 www.jbc.org /cgi/content/abstract/276/26/23616   (637 words)

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