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Expression of E. coli Phosphofructokinase Gene in an Autotrophic
Expression of E. coli Phosphofructokinase Gene in an Autotrophic

... slightly increased in E. coli DF1010 (pSDK-1) transformants, but decreased in A. thiooxidans Tt-7 (RP4, pSDK-1), compared to the wild-type E. coli K-12 cells. The result of SDS-PAGE showed that a major Mr 34,000 polypeptide band was detected in E. coli K-12, DF1010 (pSDK-1) and Tt-7 transconjugants, ...
Protein–DNA Interactions: Amino Acid Conservation and the Effects
Protein–DNA Interactions: Amino Acid Conservation and the Effects

... DNA-binding protein families and study the effects that mutations have on DNA-sequence recognition. The observations are best understood by assigning each protein family to one of three classes: (i) non-specific, where binding is independent of DNA sequence; (ii) highly specific, where binding is sp ...
Forensic ABO blood grouping by 4 SNPs analyses using an ABI
Forensic ABO blood grouping by 4 SNPs analyses using an ABI

... positive control (PCR-SSPPC) and confronting two pairs of primers (PCR-CTPP) for forensic ABO groupings using fragment analysis by ABI PRISMR 3100 genetic analyzer. The method allows the well-established base changes at four nucleotide positions 261, 796, 802, and 803 to be assayed, so that reliable ...
Slide 1
Slide 1

... S. pneumoniae with a central founder ST199 and 12 linked SLVs; two of the SLVs have diversified to produce DLVs. eBURST, unlike cluster diagrams, trees, or dendograms, uses a simple model of bacterial evolution in which an ancestral (or founding) genotype increases in frequency in the population and ...
Transgenerational Epigenetic Inheritance in Plants - 文献云下载
Transgenerational Epigenetic Inheritance in Plants - 文献云下载

... modified nucleosides such as 5-methylcytosine, N6-methyladenine, and 5-hydroxymethylcytosine as the minor components (Stacey 1965; Kappler 1971). In eukaryotic DNA, 5-methylcytosine is prevailing, comprising up to 4 and 30 % of total cytosine residues in mammals and plants, respectively (Kappler 197 ...
Alisch RS, Wang T, Chopra P, Visootsak J, Conneely KN, Warren ST . Genome-wide analysis validates aberrant methylation in fragile X syndrome is specific to the FMR1 locus. BMC Med Genet. 2013 Jan 29;14:18. doi: 10.1186/1471-2350-14-18.
Alisch RS, Wang T, Chopra P, Visootsak J, Conneely KN, Warren ST . Genome-wide analysis validates aberrant methylation in fragile X syndrome is specific to the FMR1 locus. BMC Med Genet. 2013 Jan 29;14:18. doi: 10.1186/1471-2350-14-18.

... marks are established at this locus, they are stable and resistant to current reprograming methodologies [10]. A long-standing question in the field is whether the full mutation triggers DNA methylation elsewhere in the genome or only at the FMR1 locus. Resolving this question could modify theories ...
Practical General Microbiology Lab
Practical General Microbiology Lab

... Latex Test consists of latex particles coated with human fibrinogen and IgG. On mixing the latex reagent with colonies of staphylococci which have clumping factor or Protein A present, cross-linking will occur giving visible agglutination of the latex particles. Such agglutination will occur notably ...
No Slide Title
No Slide Title

... - decreased liver size - embryonic anemia, resulting in a 50% mortality rate. •In both XPA +/+ and XPA+/- there were no abnormalities observed in this stage of development. ...
RecA maintains the integrity of chloroplast DNA molecules in
RecA maintains the integrity of chloroplast DNA molecules in

... nuclear genomes of many organisms, including plants (Lin et al., 2006). Repair and recombination of chloroplast DNA (cpDNA) in Chlamydomonas reinhardtii is suppressed when a dominant-negative version of E. coli RecA is targeted to chloroplasts (Cerutti et al., 1995). The prevalence of chloroplast-ta ...
Guidelines for separating DNA (Deoxyribonucleic Acid) using gel
Guidelines for separating DNA (Deoxyribonucleic Acid) using gel

... sequence for insulin production into bacterial plasmids. Genes (specific sections of the DNA) from different organisms (humans and the bacteria E. coli) are often combined in vitro to make a type of DNA called recombinant DNA. This recombinant DNA is often reintroduced into the prokaryotic cells whe ...
Document
Document

... elements – segments of noncoding DNA that serve as binding sites for transcription factors that help regulate transcription – distal elements– known as enhancers – proximal elements – associated with promoters ...
Product Information: Phusion U Green Multiplex PCR Master
Product Information: Phusion U Green Multiplex PCR Master

PA ALKF-[FY]-[STA]-[STAD]-[VM]
PA ALKF-[FY]-[STA]-[STAD]-[VM]

... Accession numbers give the community a unique label to attach to a biological entity, so we all know we are talking about the same thing. Sequences in databases evolve as their real biological counterparts do. They need to be updated, corrected and merged and we need to know which version of the seq ...
(162.4kB )
(162.4kB )

... 1. Introduction. Molecular robotics are a promising approach for biomedical applications. Molecular robots (nanobots) can operate inside a living body [2, 3, 1, 11], carrying out molecular actions, such as releasing a molecular payload only under some environmental conditions or shielding the body f ...
ACCOMMODATION OF GENE-CHROMOSOME CONFIGURATION
ACCOMMODATION OF GENE-CHROMOSOME CONFIGURATION

... (A~A~) (A!A~), where A{ is the ith allele at the jth locus, and the gene content within each set of parentheses indicates the association of genes within each homologous chromosome. More generally, if there are n such loci, the number of different genotypes for the given set of genes is 2n-l. From t ...
The specificity of regulatory protein binding to DNA is due to a
The specificity of regulatory protein binding to DNA is due to a

... tide sequences in double helical DNA without disrupture of the DNA structure^" . Therefore, it seems plausible that the recognition is based on the direct correspondence between the sequence of AT- and GC-specific reaction centres on the protein surface and base pair sequence in the corresponding co ...
DRIVING QUESTION: HOW DO RESEARCHERS COMPARE DNA?
DRIVING QUESTION: HOW DO RESEARCHERS COMPARE DNA?

... to determine which proteins are present. Each organism has a unique series of bands. ...
Development of Zinc Finger Domains for Recognition of the 5
Development of Zinc Finger Domains for Recognition of the 5

... gests that DNA binding is predominantly achieved by the interaction of amino acid residues of the ␣-helix in positions ⫺1, 3, and 6 with the 3⬘, middle, and 5⬘ nucleotides of a 3-bp DNA subsite, respectively (11, 12). Positions 1, 2, and 5 of the ␣-helix make direct or water-mediated contacts with t ...
Facts about the mini-Tn7 transposon system as a tool for
Facts about the mini-Tn7 transposon system as a tool for

... sequences located on the delivery plasmid between the transposon ends, Tn7L and Tn7R (see Fig. 2). The delivery plasmid is some times also named the carrier plasmid. Delivery plasmids The delivery plasmids presented here are all pUC19 derivatives, which can replicate in E. coli and other Enterics, b ...
Class XII biology Worksheet genetics and evolution
Class XII biology Worksheet genetics and evolution

... c) Why are some untranslated sequences of bases seen in mRNa coding for a polypeptide? Where exactly are they present on mRNA? F’09 68. In one family each of the four children has a different blood group. Their mother is group A and the father is group B. Explain this pattern of inheritance with the ...
AP Biology Essay Questions
AP Biology Essay Questions

... 11. The rate of photosynthesis may vary with changes that occur in environmental temperature, wavelength of light, and light intensity. Using a photosynthetic organism of your choice, choose only ONE of the three variables (temperature, wavelength of light, or light intensity) and for this variable ...
PDF version - EpiGeneSys
PDF version - EpiGeneSys

... chromatin samples extracted from native sources, analyses of such material have limitations because of their inherent heterogeneity. Native chromatin samples contain an ensemble of different core histones, linker histones and their variants, and other chromatin-associated proteins, all of which are ...
Significant enhancement of fatty acid composition in seeds of the
Significant enhancement of fatty acid composition in seeds of the

... DNA sequencing shown above were subjected to PCR amplification and DNA sequencing using Illumina Amplicon-Seq techniques in which thousands of DNA strands were sequenced from DNA isolated from each plant under study. ...
Nucleotide Sequence of the Osmoregulatory proU Operon of
Nucleotide Sequence of the Osmoregulatory proU Operon of

... genetic evidence for three cistrons (proV, proW, and proX) in this operon. Similarities in primary structure were observed between (i) the deduced sequence of ProV with membrane-associated components of other binding-protein-dependent transport systems, in the nucleotide-binding region of each of th ...
When epigenetics meets alternative splicing: the roles of DNA
When epigenetics meets alternative splicing: the roles of DNA

... contain higher levels of DNA methylation than noncoding regions. So the question remains: do high levels of DNA methylation on exons occur circumstantially, as an outcome of high exonic GC content, or does DNA methylation have a biological function in the exon selection process? To answer this quest ...
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Cre-Lox recombination



In the field of genetics, Cre-Lox recombination is known as a site-specific recombinase technology, and is widely used to carry out deletions, insertions, translocations and inversions at specific sites in the DNA of cells. It allows the DNA modification to be targeted to a specific cell type or be triggered by a specific external stimulus. It is implemented both in eukaryotic and prokaryotic systems.The system consists of a single enzyme, Cre recombinase, that recombines a pair of short target sequences called the Lox sequences. This system can be implemented without inserting any extra supporting proteins or sequences. The Cre enzyme and the original Lox site called the LoxP sequence are derived from bacteriophage P1.Placing Lox sequences appropriately allows genes to be activated, repressed, or exchanged for other genes. At a DNA level many types of manipulations can be carried out. The activity of the Cre enzyme can be controlled so that it is expressed in a particular cell type or triggered by an external stimulus like a chemical signal or a heat shock. These targeted DNA changes are useful in cell lineage tracing and when mutants are lethal if expressed globally.The Cre-Lox system is very similar in action and in usage to the FLP-FRT recombination system.
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