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DNA damage and repair
DNA damage and repair

... •Occurs when DNA Polymerase puts in the wrong nucleotide during replication and the proofreading activity does not correct it. •Repair would ideally occur on the correct strand, the newly synthesized strand. •E. coli methylates A of GATC sequence. •There is a time lapse before newly synthesized stra ...
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... these plants challenging. DNA-based technology that can bypass these limitations has been particularly useful in forest trees, enabling genomic mapping, gene sequencing, genomic selection and genetic engineering. Whole-genome sequences are particularly powerful, because they provide a platform for a ...
Pharm 202 Computer Aided Drug Design
Pharm 202 Computer Aided Drug Design

... for identification of novel, potent and selective small molecule inhibitors of drug targets within a rapid six-month timeframe. The FAST™ process involves crystallographic screening of lead-like drug fragments followed by structure-guided elaboration of the fragments by parallel chemical synthesis, ...
Fulltext PDF - Indian Academy of Sciences
Fulltext PDF - Indian Academy of Sciences

... same DNA single strand as a template, a process referred to as co-directional replication and transcription, or, they may use alternate strands and move in opposite directions. In Escherichia coli for example, the rate of replication is known to be 10-15 times faster than the rate of transcription. ...
recombinant DNA
recombinant DNA

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... About 20% of all men who carry the famous surname share Sir John’s lineage while 30% are descended from Sir John’s brother, James, the 5th High Steward of Scotland. His son, Walter, married Marjorie Bruce, the daughter of Robert I, having helped him win the great victory at Bannockburn, and their so ...
Genetics-Essentials-Concepts-and-Connections
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Vectors: The carriers of DNA molecules DNA vectors and their

... Phasmids are particularly useful in the generation and analysis of mutations exhibiting non-selectable or lethal phenotypes, such as those affecting the replication of plasmids. Phasmids may also be used as phage replacement vectors and for directing the high level expression of protein from cloned ...
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... Properties of plasmids – as DNA cloning vectors Why are linear DNA fragments as vectors are not desirable? May not carry any sequence that specify replication by host cell DNA polymerase Susceptible to degradation by DNAse  Plasmids have origin of replication (ori) (50-100 bp) enable host cell poly ...
Infectious laryngotracheitis (ILT) is an acute and highly contagious
Infectious laryngotracheitis (ILT) is an acute and highly contagious

... determine and analyse the complete genome sequences of five Italian ILTV strains. Sequences were also compared to reveal the similarity of strains across time and to discriminate between wild-type and vaccine strains. Genomes of 3 ILTV field isolates from outbreaks occurred in Italy in 1980, 2007 an ...
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... A 517 bp DNA fragment from the PurE gene was amplified, cloned into pDIA5304 and integrated into B. stibtilis 168. Chromosomal DNA isolated from four transformants was restricted with EcoRI. The religated DNA was transformed into E . coli TP611. Only one chloramphenicol-resistant clone containing pl ...
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Genomic library



A genomic library is a collection of the total genomic DNA from a single organism. The DNA is stored in a population of identical vectors, each containing a different insert of DNA. In order to construct a genomic library, the organism's DNA is extracted from cells and then digested with a restriction enzyme to cut the DNA into fragments of a specific size. The fragments are then inserted into the vector using DNA ligase. Next, the vector DNA can be taken up by a host organism - commonly a population of Escherichia coli or yeast - with each cell containing only one vector molecule. Using a host cell to carry the vector allows for easy amplification and retrieval of specific clones from the library for analysis.There are several kinds of vectors available with various insert capacities. Generally, libraries made from organisms with larger genomes require vectors featuring larger inserts, thereby fewer vector molecules are needed to make the library. Researchers can choose a vector also considering the ideal insert size to find a desired number of clones necessary for full genome coverage.Genomic libraries are commonly used for sequencing applications. They have played an important role in the whole genome sequencing of several organisms, including the human genome and several model organisms.
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