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coRdon

Codon Usage Analysis and Prediction of Gene Expressivity


R package for analysis and visualization of codon usage in DNA sequences.

Main functionalities:

  • calculates different measures of CU bias and CU-based predictors of gene expressivity
  • performs gene set enrichment analysis for unannotated or KEGG/COG annotated DNA sequences
  • implements several methods for visualization of codon usage and enrichment analysis results.

Although specifically aimed at the analysis of metagenomic samples, coRdon allows for the inspection and quantification of codon usage in DNA sequences using any of the 20 different variants of genetic code, with the additional options to include stop codons and alternative start codons in calculations.

The following statistics are implemented in the package:

The package also implements B plot for visualization of CU bias, both within a single sample and between different samples for which CU bias statistics are calculated.

Additionally, if the input sequences are annotated in either KEGG or COG orthology database, functional analysis can be performed in order to determine significantly enriched functions in the imput sample. This is aimed particularly at metagenomic samples, as a way of determining functional fingerprint of a microbial community. There are also several methods for visualisation of enrichment analysis results, including MA-like plot and bar plot.


Geting started

To install coRdon, run the following in R:

if (!requireNamespace("BiocManager", quietly=TRUE))
    install.packages("BiocManager")
BiocManager::install("coRdon")

The developmental version can be installed directly from from GitHub:

devtools::install_github("BioinfoHR/coRdon")

For worked example on how to do analysis of codon usage with coRdon, please see the package vignette.


bioinfo.hr

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