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Role of the p21 Protein in the Fanconi Anemia Pathway
Role of the p21 Protein in the Fanconi Anemia Pathway

... • Treat HCT116 p21+/+ and HCT116 p21-/- cells with the DNAcrosslinking agent mitomycin C (MMC). • Allow cells to grow for about 10 days. • Stain with crystal violet to quantify cells that survived. • Observe whether cells lacking p21 (HCT116 p21-/-) are more sensitive to MMC than wild type cells (HC ...
Binding of Hoechst with nucleic acids using fluorescence spectroscopy
Binding of Hoechst with nucleic acids using fluorescence spectroscopy

... Hoechst/t-RNA complex contains a number of water molecules. It can be concluded also that no multiple strong interactions, including multiple hydrogen bond formation of the dye with nucleotide chromophores, participate in the complex formation. Thus, there is no doubt that Hoechst, unlike of AMD and ...
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Gene silencing in mammalian cells and the spread of DNA
Gene silencing in mammalian cells and the spread of DNA

... Although a mechanism for direct removal of methyl groups from DNA has been proposed (Bhattacharya et al., 1999) and debated (Bird, 2002), the boundary model is more consistent with a replication dependent mechanism (Santos et al., 2002; Rougier et al., 1998) in which maintenance methylation is block ...
Laboratory manual for the diagnosis of whooping cough caused by... pertussis/ Bordetella parapertussis
Laboratory manual for the diagnosis of whooping cough caused by... pertussis/ Bordetella parapertussis

Non-Canonical Replication Initiation: You`re Fired!
Non-Canonical Replication Initiation: You`re Fired!

... an RNA:DNA hybrid, opposite to an unpaired non-template DNA strand, results in a so-called R-loop structure (for a review see [56]). RNA:DNA hybrids are also the onset of Okazaki fragments, which serve as primers during DNA lagging-strand replication (for a review see [57]; see Figure 1 and Table 1) ...
B. Eukaryotic RNA polymerases
B. Eukaryotic RNA polymerases

Changes in DNA and microtubules during loss and re
Changes in DNA and microtubules during loss and re

... ª The Author [2005]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: [email protected] ...
Lab (3) Report: Population Genetics
Lab (3) Report: Population Genetics

PPT - Bruce Blumberg
PPT - Bruce Blumberg

... • library construction and use • gene identification • functional analysis – point out some of the pitfalls of various methods and why certain methods are not appropriate to answer particular questions • Please feel free to ask me questions at any time ...
Equilibrium Statistics of Channel-confined DNA
Equilibrium Statistics of Channel-confined DNA

... questions and for helping me answer mine. I have also very much enjoyed sharing an office with Camilla, Joachim, Katarina, Marina and Jonas (not all at the same time). I’m sorry for ruining your workflow with questions, drumming and ice cream. Alexander Björling, Jonas Einarsson and Marina Rafajlovi ...
Analysis of Drosophila Species Genome Size and Satellite DNA
Analysis of Drosophila Species Genome Size and Satellite DNA

... ABSTRACT The size of eukaryotic genomes can vary by several orders of magnitude, yet genome size does not correlate with the number of genes nor with the size or complexity of the organism. Although ‘‘whole’’-genome sequences, such as those now available for 12 Drosophila species, provide informatio ...
light - Microbiology
light - Microbiology

... the effect is exclusively due to an increase in the fertility of the donor (F+ male) population ; irradiation of the recipient (F- female) parental bacteria decreases the number of recombinants in proportion to the survivors. Subsequent analysis showed that U.V. irradiation fails to increase the fer ...
Ultraviolet Induction of Chromosome Transfer by
Ultraviolet Induction of Chromosome Transfer by

... the effect is exclusively due to an increase in the fertility of the donor (F+ male) population ; irradiation of the recipient (F- female) parental bacteria decreases the number of recombinants in proportion to the survivors. Subsequent analysis showed that U.V. irradiation fails to increase the fer ...
Failures in Mitochondrial tRNA and tRNA Metabolism
Failures in Mitochondrial tRNA and tRNA Metabolism

... ardiovascular disease is the leading cause of death in America and the world. In particular, hypertension affects ⬇1 billion individuals worldwide and 130 million in China.1 The etiology of cardiovascular disease is not well understood because of the multifactorial causes. Cardiovascular disease can ...
ATM and Artemis promote homologous recombination of
ATM and Artemis promote homologous recombination of

... for repairing DNA double-strand breaks (DSBs), the lesion at the heart of many physiological and pathophysiological processes in mammalian cells. HR uses homologous sequences on the sister chromatid as a template to restore the genomic integrity upon DSB induction and involves genes of the Rad52 epi ...
Chpt9_Transposition.doc
Chpt9_Transposition.doc

Free Sample
Free Sample

... c. Cut DNA into smaller fragments d. Terminate translation of mRNA ____ 31. DNA is composed of all of the following except: a. adenine. c. cytosine. b. guanine. d. uracil. ...
DNA Gyrase Is Involved in Chloroplast Nucleoid
DNA Gyrase Is Involved in Chloroplast Nucleoid

... N. benthamiana Homologs of the DNA Gyrase A and B Subunits Previously, we have used tobacco rattle virus (TRV)-based VIGS in N. benthamiana to assess the functions of various signaling genes and other genes that may cause embryo or seedling lethality when their expression is suppressed (Kim et al., ...
Week 2. DNA isolation and PCR
Week 2. DNA isolation and PCR

... I begin the in-laboratory discussion by asking the students to share their compare and contrast paragraphs of PCR and DNA replication with a student from another group. Then, I lead a class discussion that begins with having the students volunteer similarities and differences between PCR and DNA rep ...
Plants` Epigenetic Secrets
Plants` Epigenetic Secrets

... There are three different types of DNA methylation in plants: CG, CHH (where H is any base except G), and CHG. In Arabidopsis, CG methylation is found on some genes, but primarily on repeat sequences that make up transposons, as well as other repeat sequences in the genome. CHH methylation is found ...
Homologous Recombination Generates T-Loop
Homologous Recombination Generates T-Loop

... to cancer and aging. Telomere attrition represents a tumor suppressor pathway that limits the replicative potential of potential cancer cells. The gradual loss of telomeric DNA with each round of DNA replication depletes the telomere reserve and leads to a growth arrest that is accompanied by senesc ...
DNA methylation controls histone H3 lysine 9 methylation
DNA methylation controls histone H3 lysine 9 methylation

... Fig. 2. Location of repetitive and single-copy sequences in leaf interphase nuclei. (A) Sequences corresponding to the 180 bp centromeric pAL repeat (red) are always located at chromocenters. Sequences corresponding to the pericentromeric BAC F28D6 (green) are located at chromocenters in wild type, ...
Replication of plasmids with the p15A origin in Shewanella
Replication of plasmids with the p15A origin in Shewanella

... Shewanella putrefaciens MR-1 (Myers and Nealson 1988a) and Escherichia coli JM109 (Yanisch-Perron et al. 1985) were grown aerobically on LB medium (Sambrook et al. 1989) supplemented, as needed, with antibiotics at the following concentrations : tetracycline (Tc), 8 mg ml−1 and chloramphenicol (Cm), ...
Grade 12 - Curriculum
Grade 12 - Curriculum

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DNA damage theory of aging

The DNA damage theory of aging proposes that aging is a consequence of unrepaired accumulation of naturally occurring DNA damages. Damage in this context is a DNA alteration that has an abnormal structure. Although both mitochondrial and nuclear DNA damage can contribute to aging, nuclear DNA is the main subject of this analysis. Nuclear DNA damage can contribute to aging either indirectly (by increasing apoptosis or cellular senescence) or directly (by increasing cell dysfunction).In humans and other mammals, DNA damage occurs frequently and DNA repair processes have evolved to compensate. In estimates made for mice, on average approximately 1,500 to 7,000 DNA lesions occur per hour in each mouse cell, or about 36,000 to 160,000 per cell per day. In any cell some DNA damage may remain despite the action of repair processes. The accumulation of unrepaired DNA damage is more prevalent in certain types of cells, particularly in non-replicating or slowly replicating cells, such as cells in the brain, skeletal and cardiac muscle.
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