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This is the development version of OmaDB; for the stable release version, see OmaDB.

R wrapper for the OMA REST API

Bioconductor version: Development (3.20)

A package for the orthology prediction data download from OMA database.

Author: Klara Kaleb

Maintainer: Klara Kaleb <klara.kaleb18 at>, Adrian Altenhoff <adrian.altenhoff at>

Citation (from within R, enter citation("OmaDB")):


To install this package, start R (version "4.4") and enter:

if (!require("BiocManager", quietly = TRUE))

# The following initializes usage of Bioc devel


For older versions of R, please refer to the appropriate Bioconductor release.


To view documentation for the version of this package installed in your system, start R and enter:

Exploring Hierarchical orthologous groups with OmaDB HTML R Script
Exploring Taxonomic trees with OmaDB HTML R Script
Get started with OmaDB HTML R Script
Sequence Mapping with OmaDB HTML R Script
Reference Manual PDF


biocViews Annotation, ComparativeGenomics, FunctionalGenomics, FunctionalPrediction, GO, Genetics, Software
Version 2.21.0
In Bioconductor since BioC 3.7 (R-3.5) (6 years)
License GPL-3
Depends R (>= 3.5), httr (>= 1.2.1), plyr (>= 1.8.4)
Imports utils, ape, Biostrings, GenomicRanges, IRanges, methods, topGO, jsonlite
System Requirements
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Suggests knitr, rmarkdown, testthat
Linking To
Depends On Me
Imports Me
Suggests Me orthogene, PhyloProfile
Links To Me
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Package Archives

Follow Installation instructions to use this package in your R session.

Source Package OmaDB_2.21.0.tar.gz
Windows Binary (64-bit only)
macOS Binary (x86_64) OmaDB_2.21.0.tgz
macOS Binary (arm64) OmaDB_2.21.0.tgz
Source Repository git clone
Source Repository (Developer Access) git clone
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