NAME

Bio::ViennaNGS - A Perl distribution for Next-Generation Sequencing (NGS) data analysis

DESCRIPTION

Bio::ViennaNGS is a distribution of Perl modules and utilities for building efficient Next-Generation Sequencing (NGS) analysis pipelines. It covers various aspects of NGS data analysis, including (but not limited to) conversion of sequence annotation, evaluation of mapped data, expression quantification and visualization.

The main Bio::ViennaNGS module is shipped with a complementary set of (sub)modules:

Bio::ViennaNGS::Fasta: Routines for accessing genomic sequences implemented through a Moose interface to Bio::DB::Fasta.

Bio::ViennaNGS::AnnoC: A Moose interface for storage and conversion of sequence annotation data.

Bio::ViennaNGS::SpliceJunc: A collection of routines for alternative splicing analysis.

Bio::ViennaNGS::UCSC: Routines for visualization of genomics data with the UCSC genome browser.

Bio::ViennaNGS::Util: Commodity routines used throughout the Bio::ViennaNGS modules and utilities

Bio::ViennaNGS::MinimalFeature: A Moose interface for handling elementary gene annotation.

Bio::ViennaNGS::Feature: A Moose-ish BED6 wrapper.

Bio::ViennaNGS::FeatureChain: Yet another Moose class for chaining gene annotation features.

Bio::ViennaNGS comes with a collection of command line utilities for accomplishing routine tasks often required in NGS data processing. These utilities serve as reference implementation of the routines implemented throughout the modules and can readily be used for atomic tasks in NGS data processing:

assembly_hub_constructor.pl: The UCSC genome browser offers the possibility to visualize any organism (including organisms that are not included in the standard UCSC browser bundle) through hso called 'Assembly Hubs'. This script constructs Assembly Hubs from genomic sequence and annotation data.

bam_split.pl: Split (paired-end and single-end) BAM alignment files by strand and compute statistics. Optionally create BED output, as well as normalized bedGraph and bigWig files for coverage visualization in genome browsers (see dependencies on third-patry tools below).

bam_to_bigWig.pl: Produce bigWig coverage profiles from (aligned) BAM files, explicitly considering strandedness. The most natural use case of this tool is to create strand-aware coverage profiles in bigWig format for genome browser visualization.

bam_uniq.pl: Extract unique and multi mapping reads from BAM alignment files and create a separate BAM file for both uniqe (.uniq.) and multi (.mult.) mappers.

bed2bedGraph.pl: Convert BED files to (strand specific) bedGraph files, allowing additional annotation and automatic generation of bedGraph files which can easily be converted to big-type files for easy UCSC visualization.

extend_bed.pl: Extend genomic features in BED files by a certain number of nucleotides, either on both sides or specifically at the 5' or 3' end, respectively.

gff2bed.pl: Convert RefSeq GFF3 annotation files to BED12 format. Individual BED12 files are created for each feature type (CDS/tRNA/rRNA/etc.). Tested with RefSeq bacterial GFF3 annotation.

kmer_analysis.pl: Count k-mers of predefined length in FastQ and Fasta files

MEME_XML_motif_extractor.pl: Compute simple statistics from MEME XML output and return a list of found motifs with the number of sequences containing those motifs as well as nice ggplot graphs.

motiffinda.pl: Find motifs in annotated sequence features. The motif can be provided as regular expression.

newUCSCdb.pl: Create a new genome database (ie. add a novel organism) in a local instance of the UCSC genome browser.

normalize_multicov.pl: Compute normalized expression data in TPM/RPKM from (raw) read counts in bedtools multicov format. TPM reference: Wagner et al, Theory Biosci. 131(4), pp 281-85 (2012)

sj_visualizer.pl: Convert splice junctions from mapped RNA-seq data in segemehl BED6 splice junction format to BED12 for easy visualization in genome Browsers.

splice_site_summary.pl: Identify and characterize splice junctions from RNA-seq data by intersecting them with annotated splice junctions.

newUCSCdb.pl: Create a new genome database for a locally installed instance of the UCSC genome browser. Based on http://genomewiki.ucsc.edu/index.php/Building_a_new_genome_database

trim_fastq.pl: Trim sequence and quality string fields in a Fastq file by user defined length.

DEPENDENCIES

Bio::Perl >= 1.00690001

BIO::DB::Sam >= 1.39

File::Basename

File::Temp

Path::Class

IPC::Cmd

Carp

Bio::ViennaNGS uses third-party tools for computing intersections of BED files: bedtools intersect from the BEDtools suite is used to compute overlaps and bedtools sort is used to sort BED output files. Make sure that those third-party utilities are available on your system, and that hey can be found and executed by the Perl interpreter. We recommend installing the latest version of BEDtools on your system.

NOTES

The Bio::ViennaNGS suite is actively developed and tested on different flavours of Linux and Mac OS X. We have taken care of writing platform-independent code that should run out of the box on most UNIX-based systems, however we do not have access to machines running Microsoft Windows. To put it straight: We have not tested and will not test Windows compatibility.

SEE ALSO

Bio::ViennaNGS::Util

Bio::ViennaNGS::AnnoC

Bio::ViennaNGS::UCSC

Bio::ViennaNGS::SpliceJunc

Bio::ViennaNGS::Fasta

Bio::ViennaNGS::MinimalFeature

Bio::ViennaNGS::Feature

Bio::ViennaNGS::FeatureChain

AUTHORS

Michael T. Wolfinger <michael@wolfinger.eu>

Jörg Fallmann <fall@tbi.univie.ac.at>

Florian Eggenhofer <florian.eggenhofer@tbi.univie.ac.at>

Fabian Amman <fabian@tbi.univie.ac.at<gt>

COPYRIGHT AND LICENSE

Copyright (C) 2014 Michael T. Wolfinger <michael@wolfinger.eu>

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.12.4 or, at your option, any later version of Perl 5 you may have available.

This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.