Sequencing by ligation variation with endonuclease V digestion and deoxyinosine-containing query oligonucleotides.
Sequencing by ligation variation with endonuclease V digestion and deoxyinosine-containing query oligonucleotides.
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DOI：
10.1186/1471-2164-12-598
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发表时间：
2011-12-12
期刊：
影响因子：
4.4
通讯作者：
Edwards JS
中科院分区：
文献类型：
--
作者：
Ho A;Murphy M;Wilson S;Atlas SR;Edwards JS
Sequencing-by-ligation (SBL) is one of several next-generation sequencing methods that has been developed for massive sequencing of DNA immobilized on arrayed beads (or other clonal amplicons). SBL has the advantage of being easy to implement and accessible to all because it can be performed with off-the-shelf reagents. However, SBL has the limitation of very short read lengths. To overcome the read length limitation, research groups have developed complex library preparation processes, which can be time-consuming, difficult, and result in low complexity libraries. Herein we describe a variation on traditional SBL protocols that extends the number of sequential bases that can be sequenced by using Endonuclease V to nick a query primer, thus leaving a ligatable end extended into the unknown sequence for further SBL cycles. To demonstrate the protocol, we constructed a known DNA sequence and utilized our SBL variation, cyclic SBL (cSBL), to resequence this region. Using our method, we were able to read thirteen contiguous bases in the 3' - 5' direction. Combining this read length with sequencing in the 5' - 3' direction would allow a read length of over twenty bases on a single tage. Implementing mate-paired tags and this SBL variation could enable > 95% coverage of the genome.
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