BOL: Related items

pyScaf

Bulbul — Mon, 19 Dec 2016 14:20:33 -0600

pyScaf orders contigs from genome assemblies utilising several types of information:

paired-end (PE) and/or mate-pair libraries (NGS-based mode)
long reads (NGS-based mode)
synteny to the genome of some related species (reference-based mode)

Scaffolding

In reference-based mode, pyScaf uses synteny to the genome of closely related species in order to order contigs and estimate distances between adjacent contigs.

Contigs are aligned globally (end-to-end) onto reference chromosomes, ignoring:

matches not satisfying cut-offs (--identity and --overlap)
suboptimal matches (only best match of each query to reference is kept)
and removing overlapping matches on reference.

In preliminary tests, pyScaf performed superbly on simulated heterozygous genomes based on C. parapsilosis (13 Mb; CANPA) and A. thaliana (119 Mb; ARATH) chromosomes, reconstructing correctly all chromosomes always for CANPA and nearly always for ARATH (Figures in dropbox, CANPA table, ARATH table).
Runs took ~0.5 min for CANPA on 4 CPUs and ~2 min for ARATH on 16 CPUs.

Important remarks:

Reduce your assembly before (fasta2homozygous.py) as any redundancy will likely break the synteny.
pyScaf works better with contigs than scaffolds, as scaffolds are often affected by mis-assemblies (no de novo assembler / scaffolder is perfect...), which breaks synteny.
pyScaf works very well if divergence between reference genome and assembled contigs is below 20% at nucleotide level.
pyScaf deals with large rearrangements ie. deletions, insertion, inversions, translocations. Note however, this is experimental implementation!
Consider closing gaps after scaffolding.

Address of the bookmark: https://github.com/lpryszcz/pyScaf

MCscan

Bulbul — Thu, 22 Dec 2016 03:53:58 -0600

MCscan is a computer program that can simultaneously scan multiple genomes to identify homologous chromosomal regions and subsequently align these regions using genes as anchors. This is the toolset for generating the synteny correspondences in Plant Genome Duplication Database. It is intended as an easy-to-use and quick way to identify conserved gene arrays both within the same genome and across different genomes.

More at http://chibba.agtec.uga.edu/duplication/mcscan/

Address of the bookmark: http://chibba.agtec.uga.edu/duplication/mcscan/

YAHA

Jit — Fri, 20 Jan 2017 05:38:05 -0600

YAHA, a fast and flexible hash-based aligner. YAHA is as fast and accurate as BWA-SW at finding the single best alignment per query and is dramatically faster and more sensitive than both SSAHA2 and MegaBLAST at finding all possible alignments. Unlike other aligners that report all, or one, alignment per query, or that use simple heuristics to select alignments, YAHA uses a directed acyclic graph to find the optimal set of alignments that cover a query using a biologically relevant breakpoint penalty. YAHA can also report multiple mappings per defined segment of the query. We show that YAHA detects more breakpoints in less time than BWA-SW across all SV classes, and especially excels at complex SVs comprising multiple breakpoints.

Availability: YAHA is currently supported on 64-bit Linux systems. Binaries and sample data are freely available for download from http://faculty.virginia.edu/irahall/YAHA.

Contact:

http://genome.wustl.edu/people/groups/detail/hall-lab/

Address of the bookmark: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463118/

GenomeComp

Jit — Fri, 17 Feb 2017 08:38:32 -0600

GenomeComp is a tool for summarizing, parsing and visualizing the genome wide sequence comparison results derived from voluminous BLAST textual output, so as to locate the rearrangements, insertions or deletions of genome segments between species or strains.

It can be easily used to compare, parsing and visualize large genomic sequences, especially closely related genomes such as inter-species or inter-strains. In addition, it can also show other sequence features like repeat sequence distributions in one whole-genome DNA sequence by comparing the genome to itself.

It is a stand-alone graphical user interface (GUI) program which runs on Linux, Unix, Mac OS X (tested on version 10.2.4 only) and Microsoft Windows platforms and is written in Perl/Tk.

Address of the bookmark: http://www.mgc.ac.cn/GenomeComp/

Krona

Jit — Wed, 22 Mar 2017 04:47:35 -0500

Krona allows hierarchical data to be explored with zooming, multi-layered pie charts. Krona charts can be created using an Excel template or KronaTools, which includes support for several bioinformatics tools and raw data formats. The interactive charts are self-contained and can be viewed with any modern web browser (see Browser support).

Address of the bookmark: https://github.com/marbl/Krona/wiki

Fastq format

Jit — Wed, 03 May 2017 04:23:32 -0500

FASTQ format is a text-based format for storing both a biological sequence (usually nucleotide sequence) and its corresponding quality scores. Both the sequence letter and quality score are each encoded with a single ASCII character for brevity.

It was originally developed at the Wellcome Trust Sanger Institute to bundle a FASTA sequence and its quality data, but has recently become the de facto standard for storing the output of high-throughput sequencing instruments such as the Illumina Genome Analyzer.^[1]

Address of the bookmark: https://en.wikipedia.org/wiki/FASTQ_format

List of Bioinformatics and Computational Biology Journals

Jitendra Narayan — Wed, 17 Jul 2013 02:36:53 -0500

Hi Bioinformatician and Computational Biologist, this is the comprehensive list of all (?) the bioinformatics and computational biology journals. Please update me if you know any other good journals related with our domains. Feel free to add your comments and suggestions. You comments will be helpful for others...

*The journals are not listed in any ascending, descending, or impact factors oders.

Bioinformatics

Journal of Computational Biology

Briefings in Bioinformatics

Protein Engineering

Nucleic Acids Research

Trends in Biotechnology

Proceedings of the National Academy of Sciences

Folding and Design

Genome Biology

Journal of Biomedical Informatics

Bioinformation

Journal of Computational Intelligence in Bioinformatics

Journal of Structural and Functional Genomics

Journal of Molecular Graphics and Modelling

Metabolic Engineering

Computers & Chemistry

Artificial Intelligence in Medicine

Journal of Biomedical Science

Artificial Intelligence

Machine Learning

Applied Bioinformatics

Applied Genomics and Proteomics

BMC Bioinformatics

Online Journal of Bioinformatics (OJB)

PSB On-Line Proceedings

Bioinformatics: Information Technology & Systems (BITS)

Data Mining and Knowledge Discovery

The EMBO Journal

Current Opinions in Structural Biology

Journal of Molecular Microbiology and Biotechnology

Nature

Nature Structural Biology

Journal of Machine Learning Research

Nature Genetics

Current Opinion in Genetics & Development

Nature Biotechnology

Trends in Biochemical Sciences

Proteins: Structure, Function, and Genetics

Nature Cell Biology

Trends in Genetics

ChemBioChem

Trends in Molecular Medicine

Journal of Molecular Modelling

Trends in Pharmacological Sciences

Drug Discovery Today

Others Free Online Full-text Journals

BioPython Cookbook

Jitendra Narayan — Thu, 08 Aug 2013 06:43:02 -0500

If you are planning to start learning BioPython ( it does not bite but swallow :P just kidding) then this online cookbook will be really helpful for you.

http://biopython.org/DIST/docs/tutorial/Tutorial.html

List of pharmacogenomics companies worldwide

Jitendra Narayan — Fri, 09 Aug 2013 13:24:47 -0500

Pharmacogenomics are the most promising area of research. Here is the list of some Pharmacogenomics companies worldwide. Feel free to add more pharmacogenomics companies if not mentioned in here.

Great Pharmacogenomics companies
www.aruplab.com
www.clarientinc.com
www.cns-hts.com
www.dnanow.com
www.dnavision.be
www.dnavision.com
www.dxsdiagnostics.com
www.entrogen.com
www.exiqon.com
www.gene.com
www.genomichealth.com
www.genoptix.com
www.genpathdiagnostics.com
www.gentris.com
www.immunicon.com
www.ingenuity.com
www.lab21.com
www.labcorp.com
www.lion-ag.de
www.lynxgen.com
www.mayoclinic.com
www.mesoscale.com
www.microcide.com
www.mitokor.com
www.monarchlifesciences.com
www.mplnet.com
www.orchidbio.com
www.pebio.com
www.phenomenome.com
www.phenopath.com
www.ppgx.com
www.prometheuslabs.com
www.protogene.com
www.questdiagnostics.com
www.rigelinc.com
www.rii.com
www.saladax.com
www.tmdlab.com
www.transgenomic.com
www.twt.com
www.uslabs.net
www.variagenics.com

Great Equipment Companies for Genomics
www.affymetrix.com
www.illumina.com
www.iontorrent.com
www.sequenom.com
www.appliedbiosystems.com
www.454.com
www.appliedbiosystems.com

Genomics in India
www.ganitlabs.in
www.sandor.co.in
www.igib.res.in
www.genotypic.co.in
www.ocimumbio.com
www.abcgenomics.com
www.xcelrisgenomics.com
www.ayugen.com
www.geneombiotech.com

Large Global Whole Genome Companies
www.decode.com
www.23andme.com
www.navigenics.com
www.pathway.com

Global companies offering genomics services
www.asuragen.com
www.baseclear.com
www.agtcenter.com
www.ambrygen.com
www.arosab.com
www.agrf.org.au
www.beckmangenomics.com
www.genomics.cn
www.bsf.a-star.edu.sg
www.cbm.fvg.it
www.cincinnatichildrens.org
www.cofactorgenomics.com
www.covance.com
www.dnalandmarks.ca
www.dnavision.com
www.expressionanalysis.com
www.fasteris.com
www.gatc-biotech.com
www.genesdiffusion.com
www.geneseek.com
www.geneticvisions.com
www.geneworks.com.au
www.genizon.com
www.genoskan.dk/uk
www.gpbio.jp
www.igatechnology.com
www.igenixinc.com
www.auxologico.it
www.lifeandbrain.com
www.macrogen.co.kr/eng
www.gqinnovationcenter.com
www.mftservices.de
www.ncgr.org
www.ramaciotti.unsw.edu.au
www.rikengenesis.jp
www.SABiosciences.com
www.sequensysbio.com
www.servicexs.com
www.snp-genetics.com
www.takara-bio.com
www.gen-probe.com
www.traitgenetics.com

Cancer's origins revealed

Jitendra Narayan — Thu, 15 Aug 2013 13:06:56 -0500

Researchers have provided the first comprehensive compendium of mutational processes that drive tumour development. Together, these mutational processes explain most mutations found in 30 of the most common cancer types. This new understanding of cancer development could help to treat and prevent a wide-range of cancers.

More at >> http://www.sanger.ac.uk/about/press/2013/130814.html