* locigenesis

locigenesis is a tool that generates a human T-cell receptor (TCR), runs it through a sequence reader simulation tool and extracts CDR3.

The goal of this project is to generate both HVR sequences with and without sequencing errors, in order to create datasets for a Machine Learning algorithm.

** Technologies

- [[https://github.com/GreiffLab/immuneSIM/][immuneSIM]]: in silico generation of human and mouse BCR and TCR repertoires
- [[http://www.pegase-biosciences.com/curesim-a-customized-read-simulator/][CuReSim]]: read simulator that mimics Ion Torrent sequencing

** Installation

This project uses [[https://nixos.org/][Nix]] to ensure reproducible builds.

1. Install Nix (compatible with MacOS, Linux and [[https://docs.microsoft.com/en-us/windows/wsl/about][WSL]]):

#+begin_src shell
curl -L https://nixos.org/nix/install | sh
#+end_src

1. Clone the repository:

#+begin_src shell
git clone https://git.coolneng.duckdns.org/coolneng/locigenesis
#+end_src

3. Change the working directory to the project:

#+begin_src shell
cd locigenesis
#+end_src

4. Enter the nix-shell:

#+begin_src shell
nix-shell
#+end_src

After running these commands, you will find yourself in a shell that contains all the needed dependencies.

** Usage

An execution script that accepts 2 parameters is provided, the following command invokes it:

#+begin_src shell
./generation.sh <number of sequences> <number of reads>
#+end_src

- <number of sequences>: an integer that specifies the number of different sequences to generate
- <number of reads>: an integer that specifies the number of reads to perform on each sequence

The script will generate 2 files under the data directory:

| HVR.fastq         | Contains the original CDR3 sequence                             |
| CuReSim-HVR.fastq | Contains CDR3 after the read simulation, with sequencing errors |