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Recombinant DNA
Recombinant DNA

... • Now we run a process called a transformation in order to get the recombinant plasmids into the bacterial cells. • The bacterial host cells are manipulated in order to make them more permeable to adoption of the plasmids. This can be done using electroporators, gene guns or chemicals such as calciu ...
Genes
Genes

... Both exons and introns are transcribed into premature mRNA.  Introns are excised and exons are brought together before mRNA leaves nucleus and enters cytoplasm for translation. Activator proteins bound to enhancer transiently bind to RNApII by looping out intervening DNA. Folding DNA enables protei ...
Genome Annotation - Virginia Commonwealth University
Genome Annotation - Virginia Commonwealth University

... includes regions preceding and following the coding region (leader and trailer) as well as intervening sequences (introns) Entire DNA sequence including exons, introns, and noncoding transcription-control regions ...
Test 2
Test 2

... DNA binding protein comes in to prevent the unwound DNA from winding back up The DnaB then serves as the start of the DNA polymerase complex that will include DNA gyrase and primase a well as DNA polymerase, but that is considered part of the elongation step This process only occurs once in the cell ...
glossary - UMass Extension
glossary - UMass Extension

... compartment the cell and from channels for molecular transport. environment: The physical, chemical and biological conditions surrounding something. enzyme: A large, complex molecule, usually protein but also RNA, that speeds the rate of a reaction by lowering the activation energy. epithelial cells ...
Lesson 3 | DNA and Genetics
Lesson 3 | DNA and Genetics

... Scientists estimate that in some areas of Africa, up to 40 percent of the population carries at least one sickle-cell gene. Those people who carry two sickle cell genes, one from each parent, have sickle-cell disease. The mutation is most common in those parts of the continent that are hit hardest b ...
Point mutation of bacterial artificial chromosomes by ET recombination
Point mutation of bacterial artificial chromosomes by ET recombination

... 2000; Hill et al., 2000; Yu et al., 2000). Here, we present a twostep procedure that combines ET recombination with selection and counterselection to allow subtle manipulation of BACs. The strategy used confers all of the advantages of other ET recombination applications, including the following. (i ...
Chapter 3
Chapter 3

... Although most of the steps of chemical evolution have not been demonstrated under hydrothermalvent conditions, abundant life does exist at the vents, thriving in an ecosystem that does not depend on photosynthetic organisms as the primary producers—unlike all other ecosystems on the surface of the E ...
2.5.2 Heredity and Gene Expression
2.5.2 Heredity and Gene Expression

... The fact that DNA is able to replicate or make an exact copy of itself means that the exact same DNA is passed on to each new generation of cells. Replication is the reason why both cells produced as a result of mitosis are genetically identical to each other and to the original parent. It is also t ...
Activating the MSH2/MSH6 Apoptotic Pathway in Cancer Cells
Activating the MSH2/MSH6 Apoptotic Pathway in Cancer Cells

... highly regulated process. This essential stage in the lifecycle of a cell is regulated by a suite of proteins that, collectively, unwind the DNA to be replicated, replicate the parent DNA, and terminate the replicative process once the daughter strands have been successfully polymerized (Frouin, Mon ...
Introduction to Analytical Techniques
Introduction to Analytical Techniques

3.4: Transcription and Translation - ISM-Online
3.4: Transcription and Translation - ISM-Online

... This was later modified to state that one gene produces one polypeptide, when it was discovered that some proteins are composed of more than one polypeptide subunit and that each subunit is coded for by its own specific gene. Hemoglobin is an example because it’s composed of two pairs of subunits an ...
Gene Therapy and Genetic Counseling
Gene Therapy and Genetic Counseling

... • Simply forcing raw DNA into nucleus: – Microinjection, electroporation ...
Cell Division, Genetics, Molecular Biology
Cell Division, Genetics, Molecular Biology

... - proteins consist of sequence of molecules called amino acids - specific sequence of amino acids determines chemical properties of each protein - proteins produced by cell determine structure, function & development of cell  Proteins responsible for inherited traits  Sequence of base pairs in DNA ...
Chapter 8: Cell Division
Chapter 8: Cell Division

... 1. Understand the two-step process of protein synthesis (transcription and translation); also define what a protein is. 2. Know the difference between DNA and RNA. 3. Know the three different types of RNA. 4. Know what codons are and their role in determining the amino acid composition of proteins; ...
General Genetics Exam 1
General Genetics Exam 1

... 12. _____ Which of the following is not an essential attribute that a biological molecule would need to be a useful genetic material? a) It must carry all of the information needed to direct the specific organization and metabolic activities of the cell b) It must replicate accurately so that the in ...
Glowing Pets
Glowing Pets

... Bacterial have circular plasmids that are usually several thousand base pairs in length. Plasmids are used in recombinant DNA technology to transfer genes from one organism to another. A plasmid will have an origin of replication site and may also contain genes for antibiotic resistance. Recombinant ...
Asbury Park School District
Asbury Park School District

... All living organisms contain DNA. Some fruits are especially suited for DNA extractions due to their multiple sets of chromosomes. Strawberries are octoploid, which means they have 8 copies of each chromosome (human body cells are diploid; they contain two copies of each chromosomes). Students will ...
DNA technology
DNA technology

... 1. The normal gene is isolated from healthy human tissue and are inserted into a plasmid that is then taken up by a bacterial cell. 2. Gene markers are used to indemnify the bacteria with the healthy gene 3. The bacterial cells then multiply and so clone the plasmid with the gene 4. The plasmid is i ...
The DNA Structure
The DNA Structure

... created single gene mutations that incapacitated specific enzymes, so that the molds with these mutations required an external supply of the substance that the enzyme normally produced, and the substance that the enzyme normally used, piled up in the cell • These results confirmed their one geneone ...
printer-friendly version
printer-friendly version

... During the first half of the 20th century a debate among biologists centered around whether proteins or deoxyribonucleic acid (DNA) was the molecule of inheritance. In 1928, Fredrick Griffith first proposed that the transfer of DNA between bacteria caused transformation, but could not provide convin ...
Chapter 27 Bacteria and Archaea
Chapter 27 Bacteria and Archaea

... Transduction is a type of horizontal gene transfer that occurs when a phage carries bacterial genes from one host cell to another, as a result of aberrations in the phage reproductive cycle. ...
Biotechnology
Biotechnology

... injected it. The insulin used was “impure” and generally a mixture from cows and pigs. Biosynthetic Insulin, introduced in 1983, was the first biotech product released and eliminated the need for animal pancreases. Synthesized insulin eliminates potential allergic reactions. Most insulins today are ...
Mdr and xdr tuberculosis
Mdr and xdr tuberculosis

... F3 also called Forward outer Primer major role during strand displacement – Strand displacing primer B3 also called backward outer Primer major role during strand displacement – Strand displacing primer FIP (Forward Inner Primer) function in loop formation BIP (Backward Inner Primer) function in loo ...
Lecture 7: Life`s Information Molecule II
Lecture 7: Life`s Information Molecule II

... First mRNA base (5 end of codon) ...
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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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