RNA-seq Bioinformatics

Introduction to bioinformatics for RNA sequence analysis

AWS Setup

Amazon AWS/AMI setup for use in workshop

This tutorial explains how Amazon cloud instances were configured for the course. This exercise is not to be completed by the students but is provided as a reference for future course developers that wish to conduct their hands on exercises on Amazon AWS.

Create AWS account

A helpful tutorial can be found here: https://rnabio.org/module-00-setup/0000/04/01/Intro_to_AWS/

  1. Create a new gmail account to use for the course
  2. Use the above email account to set up a new AWS/Amazon user account. Note: Any AWS account needs to be linked to an actual person and credit card account.
  3. Optional - Set up an IAM account. Give this account full EC2 but no other permissions. This provides an account that can be shared with other instructors but does not have access to billing and other root account privelages.
  4. Request limit increase for limit types you will be using. You need to be able to spin up at least one instance of the desired type for every student and TA/instructor. See: http://aws.amazon.com/about-aws/whats-new/2014/06/19/amazon-ec2-service-limits-report-now-available/. Note: You need to request an increase for each instance type and region you might use.
  5. Sign into AWS Management Console: http://aws.amazon.com/console/
  6. Go to EC2 services

Start with existing community AMI

  1. Launch a fresh Ubuntu Image (Ubuntu Server 18.04 LTS at the time of writing this). Choose an instance type of m5.2xlarge. Increase root volume (e.g., 32GB) and add a second volume (e.g., 250GB). Review and Launch. If necessary, create a new key pair, name and save somewhere safe. Select ‘View Instances’. Take note of public IP address of newly launched instance.
  2. Change permissions on downloaded key pair with chmod 400 [instructor-key].pem
  3. Login to instance with ubuntu user:

ssh -i [instructor-key].pem ubuntu@[public.ip.address]

Perform basic linux configuration

sudo apt-get update
sudo apt-get upgrade
sudo apt-get -y install make gcc zlib1g-dev libncurses5-dev libncursesw5-dev git cmake build-essential unzip python-dev python-numpy python3-dev python3-pip gfortran libreadline-dev default-jdk libx11-dev libxt-dev xorg-dev libxml2-dev libcurl4-openssl-dev apache2 csh ruby-full gnuplot cpanminus r-base libssl-dev gcc-4.8 g++-4.8 gsl-bin libgsl-dev apt-transport-https software-properties-common
sudo timedatectl set-timezone America/New_York

Set up additional storage for workspace

We first need to setup the additional storage volume that we added when we created the instance.

# Create mountpoint for additional storage volume
cd /
sudo mkdir workspace

# Mount ephemeral storage
sudo mkfs -t ext4 /dev/nvme1n1
sudo mount /dev/nvme1n1 /workspace

# Make ephemeral storage mounts persistent
# See http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html for guidance on setting up fstab records for AWS
echo -e "LABEL=cloudimg-rootfs / ext4 defaults,discard 0 0\n/dev/nvme1n1 /workspace ext4 defaults,nofail 0 2" | sudo tee /etc/fstab

# Change permissions on required drives
sudo chown -R ubuntu:ubuntu /workspace

# Create symlink to the added volume in your home directory
cd ~
ln -s /workspace workspace

Install any desired informatics tools

- All tools should be installed locally (e.g., /home/ubuntu/bin/) in a different location from where students will install tools in their exercises.
export MANPAGER=less

Install RNA-seq software

Create directory to install software to and setup path variables

mkdir ~/bin
cd bin

Install SAMtools

wget https://github.com/samtools/samtools/releases/download/1.11/samtools-1.11.tar.bz2
bunzip2 samtools-1.11.tar.bz2
tar -xvf samtools-1.11.tar
cd samtools-1.11
export PATH=/home/ubuntu/bin/samtools-1.11:$PATH

Install bam-readcount

cd ~/bin
export SAMTOOLS_ROOT=/home/ubuntu/bin/samtools-1.11
git clone https://github.com/genome/bam-readcount.git
cd bam-readcount
cmake -Wno-dev .
export PATH=/home/ubuntu/bin/bam-readcount/bin:$PATH

Install HISAT2

uname -m
cd ~/bin
curl -s https://cloud.biohpc.swmed.edu/index.php/s/4pMgDq4oAF9QCfA/download > hisat2-2.2.1-Linux_x86_64.zip
unzip hisat2-2.2.1-Linux_x86_64.zip
cd hisat2-2.2.1
./hisat2 -h
export PATH=/home/ubuntu/bin/hisat2-2.2.1:$PATH

Install StringTie

cd ~/bin
wget http://ccb.jhu.edu/software/stringtie/dl/stringtie-2.1.4.Linux_x86_64.tar.gz
tar -xzvf stringtie-2.1.4.Linux_x86_64.tar.gz
cd stringtie-2.1.4.Linux_x86_64
./stringtie -h
export PATH=/home/ubuntu/bin/stringtie-2.1.4.Linux_x86_64:$PATH

Install gffcompare

cd ~/bin
wget http://ccb.jhu.edu/software/stringtie/dl/gffcompare-0.12.1.Linux_x86_64.tar.gz
tar -xzvf gffcompare-0.12.1.Linux_x86_64.tar.gz
cd gffcompare-0.12.1.Linux_x86_64/
export PATH=/home/ubuntu/bin/gffcompare-0.12.1.Linux_x86_64:$PATH

Install htseq-count

cd ~/bin
git clone https://github.com/htseq/htseq.git
cd htseq/
git fetch --all --tags
git checkout release_0.12.4
python setup.py install --user
chmod +x scripts/htseq-count
./scripts/htseq-count -h
export PATH=/home/ubuntu/bin/htseq:$PATH

Install TopHat

cd ~/bin
wget https://ccb.jhu.edu/software/tophat/downloads/tophat-2.1.1.Linux_x86_64.tar.gz
tar -zxvf tophat-2.1.1.Linux_x86_64.tar.gz
cd tophat-2.1.1.Linux_x86_64/
export PATH=$/home/ubuntu/bin/tophat-2.1.1.Linux_x86_64:$PATH

Install kallisto

cd ~/bin
wget https://github.com/pachterlab/kallisto/releases/download/v0.44.0/kallisto_linux-v0.44.0.tar.gz
tar -zxvf kallisto_linux-v0.44.0.tar.gz
cd kallisto_linux-v0.44.0/
export PATH=/home/ubuntu/bin/kallisto_linux-v0.44.0:$PATH

Install FastQC

cd ~/bin
wget http://www.bioinformatics.babraham.ac.uk/projects/fastqc/fastqc_v0.11.9.zip
unzip fastqc_v0.11.9.zip
cd FastQC/
chmod 755 fastqc
./fastqc --help
export PATH=/home/ubuntu/bin/FastQC:$PATH

Install MultiQC

cd ~/bin
pip3 install --user multiqc
export PATH=/home/ubuntu/.local/bin:$PATH
python3 -m multiqc --help

Install Picard

cd ~/bin
wget https://github.com/broadinstitute/picard/releases/download/2.23.8/picard.jar -O picard.jar
java -jar ~/bin/picard.jar

Install Flexbar

cd ~/bin
wget https://github.com/seqan/flexbar/releases/download/v3.5.0/flexbar-3.5.0-linux.tar.gz
tar -xzvf flexbar-3.5.0-linux.tar.gz
cd flexbar-3.5.0-linux/
export LD_LIBRARY_PATH=~/bin/flexbar-3.5.0-linux:$LD_LIBRARY_PATH
export PATH=/home/ubuntu/bin/flexbar-3.5.0-linux:$PATH

Install Regtools

cd ~/bin
git clone https://github.com/griffithlab/regtools
cd regtools/
mkdir build
cd build/
cmake ..
export PATH=/home/ubuntu/bin/regtools/build:$PATH

Install RSeQC

pip3 install RSeQC
export PATH=~/.local/bin/:$PATH

Install bedops

cd ~/bin
mkdir bedops_linux_x86_64-v2.4.39
cd bedops_linux_x86_64-v2.4.39
wget -c https://github.com/bedops/bedops/releases/download/v2.4.39/bedops_linux_x86_64-v2.4.39.tar.bz2
tar -jxvf bedops_linux_x86_64-v2.4.39.tar.bz2
export PATH=~/bin/bedops_linux_x86_64-v2.4.39/bin:$PATH

Install gtfToGenePred

cd ~/bin
mkdir gtfToGenePred
cd gtfToGenePred
wget -c http://hgdownload.cse.ucsc.edu/admin/exe/linux.x86_64/gtfToGenePred
chmod a+x gtfToGenePred
export PATH=/home/ubuntu/bin/gtfToGenePred:$PATH

Install genePredToBed

cd ~/bin
mkdir genePredtoBed
cd genePredtoBed
wget -c http://hgdownload.cse.ucsc.edu/admin/exe/linux.x86_64/genePredToBed
chmod a+x genePredToBed
export PATH=/home/ubuntu/bin/genePredToBed:$PATH

Install how_are_we_stranded_here

pip3 install git+https://github.com/kcotto/how_are_we_stranded_here.git

Install Cell Ranger

cd ~/bin
wget `download_link`
tar -xzvf cellranger-4.0.0.tar.gz
export PATH=/home/ubuntu/bin/cellranger-4.0.0:$PATH

Install R

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/'
sudo apt-get update
sudo apt-get install r-base r-base-core r-recommended

Note, if X11 libraries are not available you may need to use --with-x=no during config, on a regular linux system you would not use this option. Also, linking the R-patched bin directory into your PATH may cause weird things to happen, such as man pages or git log to not display. This can be circumvented by directly linking the R* executables (R, RScript, RCmd, etc.) into a PATH directory.

R Libraries

For this tutorial we require:


Bioconductor libraries

For this tutorial we require:

# Install Bioconductor
if (!requireNamespace("BiocManager", quietly = TRUE))

Install CONICSmat

devtools::install_github("diazlab/CONICS/CONICSmat", dep = TRUE)

Install Signac

# Install Bioconductor
if (!requireNamespace("BiocManager", quietly = TRUE))

# Tell R to also check bioconductor when installing dependencies

# Install Signac (GO.db must installed with Bioconductor)

Install Sleuth


Install TABIX (GEMINI pre-req)

sudo apt-get install tabix

Install BWA

git clone https://github.com/lh3/bwa.git
cd bwa

Install bedtools

wget https://github.com/arq5x/bedtools2/releases/download/v2.29.1/bedtools-2.29.1.tar.gz
tar -zxvf bedtools-2.29.1.tar.gz
cd bedtools2

Set up Apache web server

We will start an apache2 service and serve the contents of the students home directories for convenience. This allows easy download of files to their local hard drives, direct loading in IGV by url, etc. Note that when launching instances a security group will have to be selected/modified that allows http access via port 80.

sudo vim /etc/apache2/apache2.conf
<Directory /home/ubuntu/>
       Options Indexes FollowSymLinks
       AllowOverride None
       Require all granted
sudo vim /etc/apache2/sites-available/000-default.conf
DocumentRoot /home/ubuntu
sudo service apache2 restart

Save a public AMI

Finally, save the instance as a new AMI by right clicking the instance and clicking on “Create Image”. Enter an appropriate name and description and then save. If desired, you may choose at this time to include the workspace snapshot in the AMI to avoid having to explicitly attach it later at launching of AMI instances. Change the permissions of the AMI to “public” if you would like it to be listed under the Community AMIs. Copy the AMI to any additional regions where you would like it to appear in Community AMI searches.

Current Public AMIs

Modification for SeqTech 2020:

cd /
sudo mkdir workspace2
sudo mount /dev/nvme1n1 /workspace2
echo -e "LABEL=cloudimg-rootfs / ext4 defaults,discard 0 0\n/dev/nvme0n1 /workspace ext4 defaults,nofail 0 2\n/dev/nvme1n1 /workspace2 ext2 defaults,nofail 0 2" | sudo tee /etc/fstab
cd workspace2/
sudo chown -R ubuntu:ubuntu /workspace2
rsync -av /workspace/* /workspace2/
rm -rf lost+found/
rm -rf workspace
ln -s /workspace2 workspace

Create IAM account

From AWS Console select Services -> IAM. Go to Users, Create User, specify a user name, and Create. Download credentials to a safe location for later reference if needed. Select the new user and go to Security Credentials -> Manage Password -> ‘Assign a Custom Password’. Go to Groups -> Create a New Group, specify a group name and Next. Attach a policy to the group. In this case we give all EC2 privileges but no other AWS privileges by specifying “AmazonEC2FullAccess”. Hit Next, review and then Create Group. Select the Group -> Add Users to Group, select your new user to add it to the new group.

Launch student instance

  1. Go to AWS console. Login. Select EC2.
  2. Launch Instance, search for “cshl-seqtech-2020” in Community AMIs and Select.
  3. Choose “m5.2xlarge” instance type.
  4. Select one instance to launch (e.g., one per student and instructor), and select “Protect against accidental termination”
  5. Make sure that you see two snapshots (e.g., the 32GB root volume and 80GB EBS volume you set up earlier)
  6. Create a tag with name=StudentName
  7. Choose existing security group call “SSH_HTTP_8081_IN_ALL_OUT”. Review and Launch.
  8. Choose an existing key pair (CSHL.pem)
  9. View instances and wait for them to finish initiating.
  10. Find your instance in console and select it, then hit connect to get your public.ip.address.
  11. Login to node ssh -i CSHL.pem ubuntu@[public.ip.address].
  12. Optional - set up DNS redirects (see below)

Set up a dynamic DNS service

Rather than handing out ip addresses for each student instance to each student you can instead set up DNS records to redirect from a more human readable name to the IP address. After spinning up all student instances, use a service like http://dyn.com (or http://entrydns.net, etc.) to create hostnames like , , etc that point to each public IP address of student instances.

Host necessary files for the course

Currently, all miscellaneous data files, annotations, etc. are hosted on an ftp server at the Genome Institute. In the future more data files could be pre-loaded onto the EBS snapshot.

After course reminders