PyamilySeq - A a tool to look for sequence-based gene families identified by clustering methods such as CD-HIT, DIAMOND, BLAST or MMseqs2.
Project description
PyamilySeq
PyamilySeq (Family Seek) is a Python tool for clustering gene sequences into families based on sequence similarity identified by tools such as CD-HIT, DIAMOND or MMseqs2. This work is an extension of the gene family / pangenome tool developed for the StORF-Reporter publication in NAR (https://doi.org/10.1093/nar/gkad814).
Features
- Clustering: Supports input from CD-HIT formatted files as well as TSV and CSV Edge List formats.
- Reclustering: Allows for the addition of new sequences post-initial clustering.
- Output: Generates a gene 'Roary' presence-absence CSV formatted file for downstream analysis.
Installation
PyamilySeq requires Python 3.6 or higher. Install dependencies using pip:
pip install PyamilySeq
Usage
Clustering Analysis
To perform clustering analysis:
python pyamilyseq.py -c clusters_file -f format
Replace clusters_file
with the path to your clustering output file and format
with one of: CD-HIT
, CSV
, or TSV
.
Reclustering
To add new sequences and recluster:
PyamilySeq -c clusters_file -f format --reclustered reclustered_file
Replace reclustered_file
with the path to the file containing additional sequences.
Output
PyamilySeq generates various outputs, including:
- Gene Presence-Absence File: This CSV file details the presence and absence of genes across genomes.
Gene Family Groups
After analysis, PyamilySeq categorizes gene families into several groups:
- First Core: Gene families present in all analysed genomes initially.
- Extended Core: Gene families extended with additional sequences.
- Combined Core: Gene families combined with both initial and additional sequences.
- Second Core: Gene families identified only in the additional sequences.
- Only Second Core: Gene families exclusively found in the additional sequences.
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