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Antibacterial Resistance and Antibiotic Use in Animals
Antibacterial Resistance and Antibiotic Use in Animals

... antimicrobial and (e) creation of altered enzymatic pathways around those targeted by the antimicrobial (4,10). The majority of antimicrobials used in veterinary medicine can be inactivated or blocked by one or more of these mechanisms. In fact, bacteria have the capability to employ multiple mechan ...
Charge Transport in DNA - Insights from
Charge Transport in DNA - Insights from

... The state of knowledge of DNA stretching in 2000 was summarized in two reviews. [24, 25] At that time, a dispute on the nature of the overstretched state of dsDNA started, and it is in fact still going on. In contrast to the proposal of S-DNA, the overstretching profile of DNA was attributed to force ...
Chromosomes
Chromosomes

Unit 1 Study Guide: Ecology and the Nature of Science
Unit 1 Study Guide: Ecology and the Nature of Science

... antiobiotics conjugation C. What did Fleming observe in 1928 and what did he conclude? D. What is meant by being antibiotic resistant? How does this arise in bacteria? E. Describe several important uses of bacteria. SG 3 – Genetic Engineering (228-230) [5d, 5e A. Relate genetic engineering to recomb ...
genes. Numbers of 6-10 copies per genome have
genes. Numbers of 6-10 copies per genome have

... The SSU genes and flanking regions in TSSU3-2 and TSSU3-8 were sequenced. Using sequences of other SSU genes, the leader peptide, mature coding regions and introns were located. In Figure 2, the sequence of these two genes is shown and compared to that of a previously sequenced tobacco SSU gene, NtS ...
The agouti mouse model: an epigenetic
The agouti mouse model: an epigenetic

... color of wild-type mice.2 The Avy metastable epiallele resulted from the insertion of an intracisternal A particle (IAP) murine retrotransposon upstream of the transcription start site of the Agouti gene (Fig. 1A).2,3 A cryptic promoter in the proximal end of the Avy IAP promotes constitutive ectopi ...
article in press - MRC
article in press - MRC

... sequences are incorporated at the end of each probe. Pairs of probes for many exons of one or more genes, all containing this same pair of universal primer sequences, can be hybridised, ligated and amplified in single multiplex reactions. The size of each amplified product is determined by the inclu ...
LESSON 4 Using Bioinformatics to Analyze Protein
LESSON 4 Using Bioinformatics to Analyze Protein

... the space bar or the forward arrow key on Slide #5 to advance each step in the animation. • First, the mRNA molecule will appear (black). This molecule is encoded by the template strand. The arrow below the sequence points left to right, 5’ to 3’, the direction in which the message is read. Point ou ...
Level 3, 2004
Level 3, 2004

... amino acids. There are 20 amino acids that make up proteins and the order, and how many of them are linked together, determines what the protein is and does. These amino acid sequences are coded for by sequenced triplets of bases on the DNA. If the DNA has a large part of the sequence replaced by an ...
University of Bucharest, Faculty of Biology, Molecular Biology Center
University of Bucharest, Faculty of Biology, Molecular Biology Center

... neutrophiles across membranes to destroy invading pathogens [6; 9; 10]. The molecular basis of BLAD is a single point mutation (A-G) at position 383 in the cDNA of the CD18 gene. This mutation results in a substitution of a glycine for an aspartic acid at position 128 in the D128G protein [2; 5; 8; ...
Part III: Laboratory – Electrophoresis
Part III: Laboratory – Electrophoresis

... evaluate the number of crossing-over events between different regions of the chromosome and the gene AGO1 and thus to locate the gene. The F2 plants that are homozygous for the mutation of interest (+/+), and thus showing the mutant phenotype, will be used for mapping. Since both of their chromosome ...
Severe oligozoospermia resulting from deletions
Severe oligozoospermia resulting from deletions

... patients therefore cannot be compared in detail. Our studies show that AZF is not strictly required for completion of spermatogenesis. Indeed, at least one of the men in whom we detected AZF deletions (in leucocytes) produced Y-bearing, AZF-deleted spermatozoa. We had previously suggested4 that AZF ...
Coffee, B, Zhang, F, Warren, ST and Reines, D: Acetylated histones are associated with the FMR1 gene in normal but not fragile X syndrome cells. Nature Genetics 22:98-101 (1999).
Coffee, B, Zhang, F, Warren, ST and Reines, D: Acetylated histones are associated with the FMR1 gene in normal but not fragile X syndrome cells. Nature Genetics 22:98-101 (1999).

... patients appears to be associated with unacetylated histones. RT-PCR analysis of total RNA from five normal and five fragile X cell lines showed that FMR1 was transcriptionally active in the former and transcriptionally silent in the latter (Fig. 1b). These results show a direct correlation between ...
NIH Public Access
NIH Public Access

... development is highly coordinated. Crosstalk between these two organs and fertilization signals appear to ensure synchronized development of each organ residing in the same ovule. However, mutations in a specific class of genes disrupt such developmental synchrony and seeds eventually abort. The Ara ...
Coordination of replication and transcription along a Drosophila
Coordination of replication and transcription along a Drosophila

... ster DHFR (Vaughn et al. 1990) and human rDNA loci (Little et al. 1993; Yoon et al. 1995) are consistent with initiation occurring over broad regions (5–50 kb), although there are sites of preferred initiation within these regions (Kobayashi et al. 1998). The binding of the origin recognition comple ...
Altering gene expression by aminocoumarins: the role of DNA
Altering gene expression by aminocoumarins: the role of DNA

... Figure 4 Genome map of S. aureus HG001 genes, differently expressed after novobiocin treatment. Colour ramp from dark blue (at least twofold repressed in novobiocin treated bacteria) via light grey (unchanged) to dark orange (at least twofold induced in novobiocin treated cells). Strain HG001 was gr ...
- Wiley Online Library
- Wiley Online Library

... conjugation), natural transformation appears to be the least widespread. Still, 4 60 bacterial species have been reported to be naturally transformable, a number that is probably considerably underestimated (Johnsborg et al., 2007b). In the broadest sense, sex can be defined as any natural process t ...
Lecture #7
Lecture #7

... - Distrubution of mating alleles - Mating occurs only when coupled isolates have different alleles at two unlinked, multiallelic loci: A and B. (They have an incompatibility system) - If fruit bodies had the same alleles at A and B, and were collected from the same area, they were assumed to be from ...
SEC62 Encodes a Putative Membrane Protein Required for Protein
SEC62 Encodes a Putative Membrane Protein Required for Protein

... Sephadex G25 (medium), G50 (medium), and 5-fluoroorotic acid were purchased from Pharmacia Fine Chemicals (Piscataway, NJ); exonnclease III and low melting point agarose were purchased from Bcthesda Research Laboratories (Gaithersburg, MD); T7 RNA polymerase was purchased from New England Biolabs, ( ...
Nucleoid occlusion and bacterial cell division
Nucleoid occlusion and bacterial cell division

... time and place to ensure equality of the progeny and integrity of the genome. Nucleoid occlusion is a defence mechanism that prevents the chromosome from being bisected and broken by the division septum. It does so by preventing Z ring formation near the nucleoid, which also helps to determine the l ...
The coiled-coil of the human Rad50 DNA repair protein contains
The coiled-coil of the human Rad50 DNA repair protein contains

... Edited by Nancy Kleckner, Harvard University, Cambridge, MA, and approved April 21, 2003 (received for review February 6, 2003) ...
FUN2: 11:00-12:00 Scribe: Taylor Nelson Wednesday, December
FUN2: 11:00-12:00 Scribe: Taylor Nelson Wednesday, December

... XII. Other Factors That May Increase Antimicrobial Resistance in Hospitals [S15] a. There are many different pathways through which we are seeing more resistance b. New community acquired MRSA, some concern that these strains will cause more illness in the hospitals than the strains already present ...
B3a Worksheet 3: DNA
B3a Worksheet 3: DNA

... believed that the characteristics gained by an individual during its lifetime would be passed on to the next generation. He called this the theory of ‘acquired characteristics’. These characteristics would include use and misuse of the body, as well as accidents. This is how Lamarck’s theory would e ...
source file - MIMG — UCLA
source file - MIMG — UCLA

... Maybe your gene is in the middle or at the end of an operon. And perhaps only the first gene in the operon has a S-D upstream of the start codon and has a stop codon within 5-15 nt of the start codon for the next gene in the operon. In this case, the genes may be close enough that the ribosome does ...
arsenic life
arsenic life

... why life is the way that it is, and why its chemistry is the way that it is) lead her to consider why phosphorus, often in the form of phosphate in the cell (that is, a phosphorus atom linked to four oxygen atoms), was chosen during the course of evolution to form many biological molecules. Phosphor ...
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Extrachromosomal DNA



Extrachromosomal DNA is any DNA that is found outside of the nucleus of a cell. It is also referred to as extranuclear DNA or cytoplasmic DNA. Most DNA in an individual genome is found in chromosomes but DNA found outside of the nucleus also serves important biological functions.In prokaryotes, nonviral extrachromosomal DNA is primarily found in plasmids whereas in eukaryotes extrachromosomal DNA is primarily found in organelles. Mitochondrial DNA is a main source of this extrachromosomal DNA in eukaryotes. Extrachromosomal DNA is often used in research of replication because it is easy to identify and isolate.Extrachromosomal DNA was found to be structurally different from nuclear DNA. Cytoplasmic DNA is less methylated than DNA found within the nucleus. It was also confirmed that the sequences of cytoplasmic DNA was different from nuclear DNA in the same organism, showing that cytoplasmic DNAs are not simply fragments of nuclear DNA.In addition to DNA found outside of the nucleus in cells, infection of viral genomes also provides an example of extrachromosomal DNA.
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