BOL: Related items

VICUNA: a software tool that enables consensus assembly of ultra-deep sequence derived from diverse viral or other heterogeneous populations.

biogeek — Tue, 25 Aug 2020 03:40:17 -0500

VICUNA is a de novo assembly program targeting populations with high mutation rates. It creates a single linear representation of the mixed population on which intra-host variants can be mapped. For clinical samples rich in contamination (e.g., >95%), VICUNA can leverage existing genomes, if available, to assemble only target-alike reads. After initial assembly, it can also use existing genomes to perform guided merging of contigs. For each data set (e.g., Illumina paired read, 454), VICUNA outputs consensus sequence(s) and the corresponding multiple sequence alignment of constituent reads. VICUNA efficiently handles ultra-deep sequence data with tens of thousands fold coverage.

http://software.broadinstitute.org/viral/docs/vicuna_v1.0.pdf

Address of the bookmark: https://www.broadinstitute.org/viral-genomics/vicuna

Postdoctoral scholarship in Bioinformatics at KTH

Thu, 21 Dec 2017 03:55:53 -0600

The School of Biotechnology offers a curriculum that reflects the multidisciplinary nature of Biotechnology, integrating theoretical and applied science in undergraduate and graduate courses. The school has six departments with about 300 employees, located at AlbaNova University Center in Stockholm and Science for Life Laboratory in Solna. The Biotechnology research within the school is internationally well recognized.

We are now seeking a postdoc scholarship holder with strong background in transcriptomics to use this large collection of data for integrative studies. Focus will be on advanced bioinformatics and statistical analysis of data from high-throughput sequencing including integration with the other platforms.

The scholarship holder must have a PhD with an outstanding research and publication record and will be selected based on her/his excellence and her/his skills. A PhD should have been awarded less than five years before the deadline of the application. The scholarship holder must have a strong background in bioinformatics, computer science, computational biology or equivalent with a profound knowledge about biology and biostatistics.

Your complete application must be received at KTH no later than 2018-01-15.

https://www.kth.se/en/om/work-at-kth/stipendier/postdoctoral-scholarship-in-bioinformatics-with-focus-on-transcriptomics-and-data-integration-1.779571

GraphUnzip: Phases an assembly graph using Hi-C data and/or long reads.

Jit — Fri, 05 Feb 2021 21:22:24 -0600

GraphUnzip, a fast, memory-efficient and accurate tool to unzip assembly graphs into their constituent haplotypes using long reads and/or Hi-C data. As GraphUnzip only connects sequences in the assembly graph that already had a potential link based on overlaps, it yields high-quality gap-less supercontigs. To demonstrate the efficiency of GraphUnzip, we tested it on a simulated diploid Escherichia coli genome, and on two real datasets for the genomes of the rotifer Adineta vaga and the potato Solanum tuberosum. In all cases, GraphUnzip yielded highly continuous phased assemblies.

https://www.biorxiv.org/content/biorxiv/early/2021/02/01/2021.01.29.428779.full.pdf

Address of the bookmark: https://github.com/nadegeguiglielmoni/GraphUnzip

Linux Commands Cheat Sheet for Bioinformatics and Computational Biology Professionals

Rahul Nayak — Mon, 05 Feb 2018 18:50:41 -0600

The purpose of this cheat sheet is to introduce biologist and bioinformatician to the frequently used tools for NGS analysis as well as giving experience in writing one-liners.

File System
ls — list items in current directory
ls -l — list items in current directory and show in long format to see perimissions, size, and modification date
ls -a — list all items in current directory, including hidden files
ls -F — list all items in current directory and show directories with a slash and executables with a star
ls dir — list all items in directory dir
cd dir — change directory to dir
cd .. — go up one directory
cd / — go to the root directory
cd ~ — go to to your home directory
cd - — go to the last directory you were just in
pwd — show present working directory
mkdir dir — make directory dir
rm file — remove file
rm -r dir — remove directory dir recursively
cp file1 file2 — copy file1 to file2
cp -r dir1 dir2 — copy directory dir1 to dir2 recursively
mv file1 file2 — move (rename) file1 to file2
ln -s file link — create symbolic link to file
touch file — create or update file
cat file — output the contents of file
less file — view file with page navigation
head file — output the first 10 lines of file
tail file — output the last 10 lines of file
tail -f file — output the contents of file as it grows, starting with the last 10 lines
vim file — edit file
alias name 'command' — create an alias for a command
System
shutdown — shut down machine
reboot — restart machine
date — show the current date and time
whoami — who you are logged in as
finger user — display information about user
man command — show the manual for command
df — show disk usage
du — show directory space usage
free — show memory and swap usage
whereis app — show possible locations of app
which app — show which app will be run by default
Process Management
ps — display your currently active processes
top — display all running processes
kill pid — kill process id pid
kill -9 pid — force kill process id pid
Permissions
ls -l — list items in current directory and show permissions
chmod ugo file — change permissions of file to ugo - u is the user's permissions, g is the group's permissions, and o is everyone else's permissions. The values of u, g, and o can be any number between 0 and 7.
7 — full permissions
6 — read and write only
5 — read and execute only
4 — read only
3 — write and execute only
2 — write only
1 — execute only
0 — no permissions
chmod 600 file — you can read and write - good for files
chmod 700 file — you can read, write, and execute - good for scripts
chmod 644 file — you can read and write, and everyone else can only read - good for web pages
chmod 755 file — you can read, write, and execute, and everyone else can read and execute - good for programs that you want to share
Networking
wget file — download a file
curl file — download a file
scp user@host:file dir — secure copy a file from remote server to the dir directory on your machine
scp file user@host:dir — secure copy a file from your machine to the dir directory on a remote server
scp -r user@host:dir dir — secure copy the directory dir from remote server to the directory dir on your machine
ssh user@host — connect to host as user
ssh -p port user@host — connect to host on port as user
ssh-copy-id user@host — add your key to host for user to enable a keyed or passwordless login
ping host — ping host and output results
whois domain — get information for domain
dig domain — get DNS information for domain
dig -x host — reverse lookup host
lsof -i tcp:1337 — list all processes running on port 1337
Searching
grep pattern files — search for pattern in files
grep -r pattern dir — search recursively for pattern in dir
grep -rn pattern dir — search recursively for pattern in dir and show the line number found
grep -r pattern dir --include='*.ext — search recursively for pattern in dir and only search in files with .ext extension
command | grep pattern — search for pattern in the output of command
find file — find all instances of file in real system
locate file — find all instances of file using indexed database built from the updatedb command. Much faster than find
sed -i 's/day/night/g' file — find all occurrences of day in a file and replace them with night - s means substitude and g means global - sed also supports regular expressions
Compression
tar cf file.tar files — create a tar named file.tar containing files
tar xf file.tar — extract the files from file.tar
tar czf file.tar.gz files — create a tar with Gzip compression
tar xzf file.tar.gz — extract a tar using Gzip
gzip file — compresses file and renames it to file.gz
gzip -d file.gz — decompresses file.gz back to file
Shortcuts
ctrl+a — move cursor to beginning of line
ctrl+f — move cursor to end of line
alt+f — move cursor forward 1 word
alt+b — move cursor backward 1 word

LoReTTA, a user-friendly tool for assembling viral genomes from PacBio sequence data

Neel — Wed, 23 Jun 2021 07:54:53 -0500

LoReTTA (Long Read Template-Targeted Assembler), a tool designed for performing de novo assembly of long reads generated from viral genomes on the PacBio platform. LoReTTA exploits a reference genome to guide the assembly process, an approach that has been successful with short reads.

https://academic.oup.com/ve/article/7/1/veab042/6248116

Address of the bookmark: https://academic.oup.com/ve/article/7/1/veab042/6248116

Some useful Bioinformatics links

Jit — Fri, 16 Mar 2018 20:50:10 -0500

Reference-free prediction of rearrangement breakpoint reads | Bioinformatics | Oxford Academic

https://academic.oup.com/bioinformatics/article/30/18/2559/2475628
Reference-free SNP detection: dealing with the data deluge

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4083407/
GATB/DiscoSnp: DiscoSnp is designed for discovering all kinds of SNPs (not only isolated ones), as well as insertions and deletions, from raw set(s) of reads.

https://github.com/GATB/DiscoSnp
De novo assembly | Oxford Nanopore Technologies

https://nanoporetech.com/taxonomy/term/131
De novo long-read assembly of a complex animal genome | bioRxiv

https://www.biorxiv.org/content/early/2017/09/10/187054
Rapid de novo assembly of the European eel genome from nanopore sequencing reads | Scientific Reports

https://www.nature.com/articles/s41598-017-07650-6.epdf?author_access_token=dktG7e98wyRJnaEEMTcPqtRgN0jAjWel9jnR3ZoTv0P7E7t-wVGo30iojNO7dICajNY_7PE5xVPv6OoLe7hn9TeUjcZ5umREOzNoPMWkfYH58RS6uxm3vm4e4BG2AA_WKW84i6egKK271NwMq-NfzA%3D%3D
nanoporetech/ont-assembly-polish: ONT assembly and Illumina polishing pipeline

https://github.com/nanoporetech/ont-assembly-polish
Generade-nl/TULIP: TULIP - The Uncorrected Long read Itegration Pipeline

https://github.com/Generade-nl/TULIP
www.nature.com

https://www.nature.com/articles/s41598-017-03996-z
Example gallery of NanoPlot – Gigabase or gigabyte

https://gigabaseorgigabyte.wordpress.com/2017/06/01/example-gallery-of-nanoplot/
Tool documentation

https://broadinstitute.github.io/picard/command-line-overview.html
Chromosome-scale scaffolding of de novo genome assemblies based on chromatin interactions. - PubMed - NCBI

https://www.ncbi.nlm.nih.gov/pubmed/24185095
MAFFT ver.7 - a multiple sequence alignment program

https://mafft.cbrc.jp/alignment/software/algorithms/algorithms.html
Measuring the distance between multiple sequence alignments | Bioinformatics | Oxford Academic

https://academic.oup.com/bioinformatics/article/28/4/495/212883
The MUMmer 3 examples

http://mummer.sourceforge.net/examples/
MAFFT ver.7 - a multiple sequence alignment program

https://mafft.cbrc.jp/alignment/software/tips.html
Omega | Overlap-graph de novo Assembler for Metagenomics

https://omega.omicsbio.org/
abiswas-odu/Disco: Multi-threaded Distributed Memory Overlap-Layout-Consensus (OLC) Metagenome Assembler

https://github.com/abiswas-odu/Disco
SAGE: String-overlap Assembly of GEnomes | BMC Bioinformatics | Full Text

https://bmcbioinformatics.biomedcentral.com/articles/10.1186/1471-2105-15-302

Fast and sensitive mapping of nanopore sequencing reads with GraphMap | Nature Communications

https://www.nature.com/articles/ncomms11307
lumpy-sv/extractSplitReads_BwaMem at master · arq5x/lumpy-sv

https://github.com/arq5x/lumpy-sv/blob/master/scripts/extractSplitReads_BwaMem
jts/nanocorrect: Experimental pipeline for correcting nanopore reads

https://github.com/jts/nanocorrect

video - how to install flash plugin on ubuntu 14.04 LTS 64-bit version - Ask Ubuntu

https://askubuntu.com/questions/469553/how-to-install-flash-plugin-on-ubuntu-14-04-lts-64-bit-version
lh3/fermi: A WGS de novo assembler based on the FMD-index for large genomes

https://github.com/lh3/fermi
Multi-metagenome

http://madsalbertsen.github.io/multi-metagenome/docs/step9.html
Bandage by rrwick

https://rrwick.github.io/Bandage/
Codon Optimization OnLine (COOL): a web-based multi-objective optimization platform for synthetic gene design | Bioinformatics | Oxford Academic

https://academic.oup.com/bioinformatics/article/30/15/2210/2391162
Genome Architecture and Evolution of a Unichromosomal Asexual Nematode - ScienceDirect

https://www.sciencedirect.com/science/article/pii/S096098221731076X?via%3Dihub#fig4
How to determine chimeras in my de novo assembly? - SEQanswers

http://seqanswers.com/forums/showthread.php?t=26721
samtools(1) manual page

http://www.htslib.org/doc/samtools.html
How To Filter Mapped Reads With Samtools

https://www.biostars.org/p/56246/
The MUMmer 3 manual

http://mummer.sourceforge.net/manual/#nucmer
assembly_olc.pdf

http://www.cs.jhu.edu/~langmea/resources/lecture_notes/assembly_olc.pdf
SAM and BAM filtering oneliners

https://gist.github.com/davfre/8596159
Inroduction to dot-plots

http://www.code10.info/index.php%3Foption%3Dcom_content%26view%3Darticle%26id%3D64:inroduction-to-dot-plots%26catid%3D52:cat_coding_algorithms_dot-plots%26Itemid%3D76
RepeatFinder Home Page

http://www.cbcb.umd.edu/software/RepeatFinder/
RepeatFinderReprint.pdf

http://www.cbcb.umd.edu/software/RepeatFinder/RepeatFinderReprint.pdf
https://bernatgel.github.io/karyoploter_tutorial//Tutorial/CreateIdeogram/CreateIdeogram.html

https://bernatgel.github.io/karyoploter_tutorial//Tutorial/CreateIdeogram/CreateIdeogram.html
Circular Visualization in R

http://zuguang.de/circlize_book/book/introduction.html#a-qiuck-glance
Creating a coverage plot using BEDTools and R

https://davetang.org/muse/2015/08/05/creating-a-coverage-plot-using-bedtools-and-r/
Eval: A software package for analysis of genome annotations | BMC Bioinformatics | Full Text

https://bmcbioinformatics.biomedcentral.com/articles/10.1186/1471-2105-4-50
eval-documentation.pdf

http://mblab.wustl.edu/media/software/eval-documentation.pdf
OmicCircos: A Simple-to-Use R Package for the Circular Visualization of Multidimensional Omics Data

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3921174/
sequence - download.tardigrades.org > v1 > sequence

http://download.tardigrades.org/v1/sequence/
ksahlin/BESST: BESST - scaffolder for genomic assemblies

https://github.com/ksahlin/BESST
reubwn/scripts: Useful scripts for various things

https://github.com/reubwn/scripts
ICEberg

http://db-mml.sjtu.edu.cn/ICEberg/index.php
Satsuma - Evolution and Genomics

http://evomics.org/learning/genomics/satsuma/
A complete bacterial genome assembled de novo using only nanopore sequencing data | Nature Methods

https://www.nature.com/articles/nmeth.3444
vezzi/FRC_align: Computes FRC from SAM/BAM file and not from afg files

https://mail.google.com/mail/u/0/#inbox
Read GTF file into R - Dave Tang's blog

https://davetang.org/muse/2017/08/04/read-gtf-file-r/

https://bernatgel.github.io/karyoploter_tutorial//Tutorial/CustomGenomes/CustomGenomes.html

https://bernatgel.github.io/karyoploter_tutorial//Tutorial/CustomGenomes/CustomGenomes.html
Dot: Interactive dot plot for genome-genome alignments

https://dnanexus.github.io/dot/
Zoho Accounts

https://accounts.zoho.eu/signin?servicename=ZohoProjects&serviceurl=https%3A%2F%2Fprojects.zoho.eu%2Fportal%2Favaga2
lh3/minimap2: A versatile pairwise aligner for genomic and spliced nucleotide sequences

https://github.com/lh3/minimap2
SSPACE-LongRead: scaffolding bacterial draft genomes using long read sequence information | BMC Bioinformatics | Full Text

https://bmcbioinformatics.biomedcentral.com/articles/10.1186/1471-2105-15-211
Palindromic gene amplification — an evolutionarily conserved role for DNA inverted repeats in the genome | Nature Reviews Cancer

https://www.nature.com/articles/nrc2591
bioinformatics - BLAST DNA Sequences Reversed - Biology Stack Exchange

https://biology.stackexchange.com/questions/8160/blast-dna-sequences-reversed
LASTZ

http://www.bx.psu.edu/miller_lab/dist/README.lastz-1.02.00/README.lastz-1.02.00a.html
SOGo - (1652) Inbox

https://sogo.unamur.be/SOGo/so/jnarayan/Mail/view
Tetra-Nucleotide Analysis (TNA) | BIOiPLUG Help center

http://help.bioiplug.com/tetra-nucleotide-analysis-tna/

Clustering metagenomic contigs on tetranucleotide frequency — CGAT documentation

http://cgat.readthedocs.io/en/latest/recipes/metagenome_contigs_kmers.html

Spades tutorial PDF

Abhimanyu Singh — Tue, 01 Feb 2022 04:56:43 -0600

SPAdes—St. Petersburg genome Assembler—was originally developed for de novo assembly of genome sequencing data produced for cultivated microbial isolates and for single-cell genomic DNA sequencing. With time, the functionality of SPAdes was extended to enable assembly of IonTorrent data, as well as hybrid assembly from short and long reads (PacBio and Oxford Nanopore). In this article we present protocols for five different assembly pipelines that comprise the SPAdes package and that are used for assembly of metagenomes and transcriptomes as well as assembly of putative plasmids and biosynthetic gene clusters from whole-genome sequencing and metagenomic datasets.

BINC (Bioinformatics National Certification) Examination 2018

Jit — Mon, 23 Apr 2018 03:34:53 -0500

Bioinformatics National Certification (BINC) was instituted by Department of Biotechnology, Government of India in 2005 at Savitribai Phule Pune University, formerly University of Pune, Pune to certify bioinformatics professionals and recognizing candidate's theoretical and practical ability and fostering interdisciplinary research. Later on, it was transferred to Jawaharlal Nehru University, New Delhi and then to Pondicherry University, Puducherry. Pondicherry University conducted the BINC examination in 2015, 2016 and 2017.

Biotech Consortium India Limited (BCIL), New Delhi is conducting the BINC 2018 examination on behalf Department of Biotechnology, Government of India.

BINC is a certification programme for graduate and post-graduate students for recognizing their exceptional bioinformatics knowledge and skills and to improve their employment opportunities. There is a growing need for trained manpower in the area of Bioinformatics. Currently, various universities and institutions, both government and private, impart Bioinformatics education in India. The qualifying candidates will be awarded a lifetime certificate. This certification would facilitate industries and potential employers in recruitment of Bioinformatics professionals having exceptionally good bioinformatics skills.

The certification under Bioinformatics National Certification (BINC) scheme is given to the candidates after three tier selection process. The successful candidates are also eligible for availing Junior Research Fellowship (JRF) for pursuing Ph.D. in Bioinformatics at recognized Indian universities/institutes. The research fellowships of all BINC qualified Indian nationals are funded by DBT. BINC qualified candidates are called DBT certified Bioinformaticians while the individuals availing the fellowships are called as DBT-BINC Junior Research Fellows (DBT-BINC-JRF). Cash prize of 10,000/- each is awarded to the top 10 BINC qualifiers.

Eligibility

i) Bachelor's/Master's degree in Life Sciences, Physical Sciences, Chemical Sciences, Mathematical Sciences, Agriculture, Veterinary, Medicine, Pharmacy, Engineering and Technology.

ii) No formal training, diploma or certificate in bioinformatics is required.

iii) Candidates in final year of Bachelor's/ Master's degree are also eligible to apply.

Pattern of Examination

Syllabus

The syllabus consists of six sections - Bioinformatics, Biology, Physical Science, Chemical Science, Mathematics & Statistics, and Information Technology.

Note: Paper-III will be computer based practical and will include programming on Bioinformatics

Important Dates

Examination Centers

BINC Fellowship

Forms & Downloads

FAQs

Contact Us

Nisha Singh
Biotech Consortium India Limited
(CIN: U73100DL1990PLC041486)
5th Floor, Anuvrat Bhawan 210, Deen Dayal Upadhyaya Marg New Delhi - 110 002
Tel.: 011-2321 9064-67 Ext. 231, 236
Email - For general BINC queries:binc.dbt@biotech.co.in
Helpline for Application submission related queries:binchelpdesk@biotech.co.in
Website: www.bcil.nic.in/BINC.html

ContigExtender: a new approach to improving de novo sequence assembly for viral metagenomics data

LEGE — Wed, 08 May 2024 07:32:45 -0500

ContigExtender, was developed to extend contigs, complementing de novo assembly. ContigExtender employs a novel recursive Overlap Layout Candidates (r-OLC) strategy that explores multiple extending paths to achieve longer and highly accurate contigs. ContigExtender is effective for extending contigs significantly in in silico synthesized and real metagenomics datasets.

More at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7953547/

Address of the bookmark: https://github.com/dengzac/contig-extender

Interview Puzzles for Bioinformatician !

Rahul Nayak — Tue, 17 Jul 2018 05:26:18 -0500

These are some of the most famous Interview Puzzles being asked in top tech companies.

Here is a list of Top 25 puzzles which have been asked in top Tech Interview.

Specially for Microsoft Interview Puzzles, you may refer,
Top 15 Microsoft Interview Puzzles
Microsoft Interview Puzzles

Other MOST COMMON Interview Puzzles-
Top 25 Tech Interview Logical Puzzles

Each of the puzzles got repeated a number of times in interviews even for top tech companies