Saturday, March 16, 2019

Normalization of Genomic DNA Using Duplex-Specific Nuclease Essay

Whole genome shotgun sequencing (WGS) is an effective system for the study of wing sequences in genomes. It generates several sequences data, which result in overlapping sequences eventually. The aligning deoxyribonucleic acid sequences achieved overlapping sequence assembly into contigs that could read through the computer program. The WGS method is not applicable when redundant repetitive sequences exist in blown-up genomes1 (cited in 1). Several methods such as methylation-spanning linker libraries (MSLL), Methylation filtration (MF) and others have practiced eradicating wordiness in higher plant genomes that depended on the hypermethylation tendency of repetitive sequences. The use of enzymes or a genomic library set up could modify the genome, only it is applicable to limited plant genomes 2-4 (cited in 1). The authors proposed another method in this article called high-C0t DNA analysis that followed DNA renaturation kinetics in which sheared, denatured, and piecemeal re anneled genomic DNA is used. Then, hydroxyapatite chromatography is used for separation of repetitive sequences (dsDNA) from low-copy sequences (ssDNA). With the help of detailed experience of DNA reassociation kinetics and advance skills in spectrophotometry, high-C0t DNA analysis squeeze out be applied to any genome5-7 (cited in 1). Shagina and others (2010) has discovered duplex-specific nuclease (DSN) normalization technology for genomic DNA (1). It is a simple method that based on crossover kinetics excluding separation of both ssDNA and dsDNA. The authors isolated DSN enzyme from the Kamchatka crab that is thermostable and specific to dsDNA8 (cited in 1). They first denatured dsDNA that contained repetitive sequence and hydrolyzed it by DSN and then ran PCR on ssDNA (low-... ...tion of normalized cDNA libraries enriched with full-length sequences. Bioorganic Khim. 31170-177. 10Zhulidov PA, Bogdanova EA, Shcheglov AS, Vagner LL, Khaspekov GL, Kozhemyako VB, Matz MV, Mel eshkevitch E. (2004). Simple cDNA normalization using Kamchatka crab duplex-specific nuclease. Nucleic Acids Res 32e37. 11Rodrigue S, Malmstrom RR, Berlin AM, Birren BW, Henn MR, and Chisholm SW. (2009). Whole genome amplification and de novo assembly of oneness bacterial cells. PLoS One 4e6864. 12Cheung F, Haas BJ, Goldberg SM, May GD, Xiao Y, and Town CD. (2006). Sequencing Medicago truncatula show sequenced tags using 454 Life Sciences technology. BMC Genomics 7272. 13Lander ES, Linton LM, Birren B, Nusbaum C, Zody MC, Baldwin J, Devon K, Dewar K. (2001). Initial sequencing and analysis of the human genome. reputation 409860-921.

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