Simple tools for assembling and searching high-density picolitre pyrophosphate sequence data.

Source Code for Biology and Medicine
Nicolas J Parker, Andrew G Parker

Abstract

The advent of pyrophosphate sequencing makes large volumes of sequencing data available at a lower cost than previously possible. However, the short read lengths are difficult to assemble and the large dataset is difficult to handle. During the sequencing of a virus from the tsetse fly, Glossina pallidipes, we found the need for tools to search quickly a set of reads for near exact text matches. A set of tools is provided to search a large data set of pyrophosphate sequence reads under a "live" CD version of Linux on a standard PC that can be used by anyone without prior knowledge of Linux and without having to install a Linux setup on the computer. The tools permit short lengths of de novo assembly, checking of existing assembled sequences, selection and display of reads from the data set and gathering counts of sequences in the reads. Demonstrations are given of the use of the tools to help with checking an assembly against the fragment data set; investigating homopolymer lengths, repeat regions and polymorphisms; and resolving inserted bases caused by incomplete chain extension. The additional information contained in a pyrophosphate sequencing data set beyond a basic assembly is difficult to access due to a lack of tools. T...Continue Reading

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Citations

Apr 5, 2016·Biochemistry Research International·Suprava PatelEli Mohapatra

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Methods Mentioned

BETA
454 sequencing
PCR
454

Software Mentioned

Phrap
Open Office
Knoppix
Windows
Phred
cmpl
Red
Knoppix DVD
FAT32
NTiVector

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