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Next-generation DNA sequencing techniques
Next-generation DNA sequencing techniques

... as sieving separation media for the fluorescently labelled DNA fragments, the relatively low number of samples which could be analysed in parallel and the difficulty of total automation of the sample preparation methods. These limitations initiated efforts to develop techniques without gels, which w ...
Why BLAST is great - GENI
Why BLAST is great - GENI

... extremely large databases Sufficiently sensitive and selective for most purposes Robust - the default parameters can usually be used ...
Nucleic Acids: Revisiting the Central Dogma
Nucleic Acids: Revisiting the Central Dogma

... mutation and RNA-catalyzed recombinations to produce new phenotypes. Darwinian selection occurs by the most efficiently replicating molecules which will eventually dominate the pool until a new mutant arises that will take over and so on and so on. Why not RNA? RNA is “biochemically inept”. RNA is n ...
nucleicacidchemistry
nucleicacidchemistry

... Note that we said there wasn’t much mRNA around at any given moment The amount synthesized is much greater because it has a much shorter lifetime than the others Ribonucleases act more avidly on it We need a mechanism for eliminating it because the cell wants to control concentrations of specific pr ...
Chapter 13
Chapter 13

mRNA Codon
mRNA Codon

... Proteins are vital to living organisms. They are involved in chemical reactions, oxygen transport, muscle contraction, sensory perception, blood clotting, and many other activities. The great variety of roles requires equal variety in the structure of protein molecules. This variety is achieved by m ...
OVERVIEW OF THE BIO208 GFP LABORATORY PROJECT
OVERVIEW OF THE BIO208 GFP LABORATORY PROJECT

... the amount (in ug) of plasmid DNA used in the experiment. Transformation efficiency = Total number of transformed cells on plate Amount of plasmid DNA spread on plate 1. Examine the LB/amp/ara plate under UV light. Determine the number of individual glowing colonies and record in the laboratory note ...
a code for traits: dna structure and function
a code for traits: dna structure and function

... Sickle Cell Anemia (SCA) is a genetic disorder caused by a point mutation (single base substitution) on the 11th chromosome. Only individuals with the genotype “SS” inherit sickle cell disease, which can be fatal because not enough oxygen is transported to vital organs. Individuals with the genotype ...
An overview of the structures of protein-DNA complexes
An overview of the structures of protein-DNA complexes

Single Cell DNA Damage/Repair Assay Using HaloChip
Single Cell DNA Damage/Repair Assay Using HaloChip

... analysis. Comet assay or single cell gel electrophoresis can provide damage distribution in a population of cells.14 It is based on the fact that relaxed DNA loops induced by single strand break or DNA fragment migrate farther inside an agarose gel than undamaged DNA.15 Not only can the comet assay ...
Policy for sample drop-off and storage in the DNA Analysis Facility
Policy for sample drop-off and storage in the DNA Analysis Facility

... If the lab has grown to the point where a second box is needed we are happy to provide another, but not if the box is full because no one is removing old samples. Fragment Analysis: Samples for Fragment Analysis are to be placed on the top shelf of the “Fragment Analysis” refrigerator located in 305 ...
2 - Griffith Research Online
2 - Griffith Research Online

... of the reacting duplex. Interstrand disulfide crosslinks, introduced by oxidation of thiouracil and thioguanine bases, abolished the specificity of human FEN1 for hydrolysis one nucleotide into the 5'-duplex. Site-specific hydrolysis of the phosphate diester bonds of nucleic acids with aberrant stru ...
Analysis of Human DNA in Stool Samples as a Technique for
Analysis of Human DNA in Stool Samples as a Technique for

... Several cellular genetic alterations have been associated with CRC. In the proposed multistep model of carcinogenesis, the tumor suppressor gene p53 and the proto-oncogene K-ras are most frequently altered. Mutations in APC (adenomatous polyposis coli) genes and epigenetic markers (e.g., hypermethyl ...
Chapter 2. Structures of Nucleic Acids
Chapter 2. Structures of Nucleic Acids

... mice (Fig. 2.1.A.). Smooth (S) strains produce a capsular polysaccharide on their surface, which allow the Pneumococi to escape destruction by the mouse, and the infection proceeds, i.e. they are virulent. This polysaccaride can be type I, II, or III. Virulent S strains can be killed by heat (i.e., ...
Analysis by pulsed-field gel electrophoresis mutations in the
Analysis by pulsed-field gel electrophoresis mutations in the

... siderophore-independent direct interaction between host iron-binding glycoproteins, such as transferrin, and bacterial cell surface receptors (transferrin-binding proteins; TBPs).".' So far as H . i,nfluenzae type b is concerned, the transferrin receptor is thought to consist of at least two protein ...
Bacteria Transformation
Bacteria Transformation

... A number of tricks were performed on this gene to make the bacteria want to use it to constantly make insulin. Big vats of bacteria now make tons of human insulin. From this, pharmaceutical companies can isolate pure human insulin ...
Questions
Questions

... 1) in 5’ → 3’ direction with new nucleotide always added at 3’ site 2) in 3’ → 5’ direction with new nucleotide always added at 5’ site 3) in any direction along the entire length of single DNA strand 4) on both strands of DNA molecules 38. The nucleotides on mRNA are 1) complementary to transcripti ...
PHM 281N Pharmaceutical Biochemistry II
PHM 281N Pharmaceutical Biochemistry II

... *How do transcription and DNA synthesis differ? How are they the same? *What descriptors are used to refer to the DNA strand that is copied in transcription? The other DNA strand? *How are transcribed regions of DNA recognized in prokaryotes? In eukaryotes? *What is the function of the sigma factor ...
Document
Document

... expressed in E. coli cells grown in medium containing glucose or glucose + lactose but only in medium containing lactose and no glucose. ...
DNA - Gene - Website Staff UI
DNA - Gene - Website Staff UI

... a. DNA glycosilase enzyme recognized and then excises the damage bases in DNA b. DNA polymerase fills nucleotide in the gap c. DNA ligase seals the break to complete the repair process ...
Searching for Genes
Searching for Genes

... All branches on the tree of life share common roots. One way to study those roots is to look to DNA sequences. So, when the Roberts lab began studying the evolution of cellulose synthesis, one place they looked was at the available DNA sequence information. Even now, as they expand their studies to ...
A Variant within the DNA Repair Gene XRCC3 Is
A Variant within the DNA Repair Gene XRCC3 Is

... proteins involved in the regulation of DNA replication and progression through the cell cycle (6). Studies have shown that genes directly involved in DNA repair and the maintenance of genome integrity, or genes indirectly involved in the repair of DNA damage through the regulation of the cell cycle, ...
Modulation of base excision repair of 8
Modulation of base excision repair of 8

... first is false pairing of 8-oxoG (in syn-conformation) with adenine, resulting in increased frequency of replication errors (4–6). This lesion-templated misincorporation of dATP by DNA polymerases leads to mutations and cancer, particularly in individuals with mutated MUTYH gene whose product removes ...
pARA and pKAN-R
pARA and pKAN-R

... naturally in bacterial cells. The plasmids used in molecular biology have been modified through genetic engineering to facilitate gene cloning and protein production (gene expression) in bacteria. Antibiotic resistant genes have been engineered into these plasmids and function as selectable markers— ...
Long-span, mate-pair scaffolding and other methods for
Long-span, mate-pair scaffolding and other methods for

... the A-tailed fragments without the need for cleanup steps in between. ...
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DNA supercoil



DNA supercoiling refers to the over- or under-winding of a DNA strand, and is an expression of the strain on that strand. Supercoiling is important in a number of biological processes, such as compacting DNA. Additionally, certain enzymes such as topoisomerases are able to change DNA topology to facilitate functions such as DNA replication or transcription. Mathematical expressions are used to describe supercoiling by comparing different coiled states to relaxed B-form DNA.As a general rule, the DNA of most organisms is negatively supercoiled.
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