Rcpi

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Overview

Rcpi offers a molecular informatics toolkit with a comprehensive integration of bioinformatics and cheminformatics tools for drug discovery. For more information, please see our paper <DOI:10.1093/bioinformatics/btu624> (PDF).

Paper Citation

Formatted citation:

Dong-Sheng Cao, Nan Xiao, Qing-Song Xu, and Alex F. Chen. (2015). Rcpi: R/Bioconductor package to generate various descriptors of proteins, compounds and their interactions. Bioinformatics 31 (2), 279-281.

BibTeX entry:

@article{Rcpi2015,
  author = {Cao, Dong-Sheng and Xiao, Nan and Xu, Qing-Song and Alex F. Chen.},
  title = {{Rcpi: R/Bioconductor package to generate various descriptors of proteins, compounds and their interactions}},
  journal = {Bioinformatics},
  year = {2015},
  volume = {31},
  number = {2},
  pages = {279--281},
  doi = {10.1093/bioinformatics/btu624},
  issn = {1367-4803},
  url = {http://bioinformatics.oxfordjournals.org/content/31/2/279}
}

Installation

To install the Rcpi package:

install.packages("BiocManager")
BiocManager::install("Rcpi")

To make the package fully functional (especially the Open Babel related functions), we recommend installing the Enhances packages by:

BiocManager::install("Rcpi", dependencies = c("Imports", "Enhances"))

Several dependencies of the Rcpi package may require some system-level libraries, check the corresponding manuals of these packages for detailed installation guides.

Browse the package vignettes: [1], [2] for a quick-start.

Features

Rcpi implemented and integrated the state-of-the-art protein sequence descriptors and molecular descriptors/fingerprints with R. For protein sequences, the Rcpi package could

Calculate six protein descriptor groups composed of fourteen types of commonly used structural and physicochemical descriptors that include 9920 descriptors.
Calculate six types of generalized scales-based descriptors derived by various dimensionality reduction methods for proteochemometric (PCM) modeling.
Parallellized pairwise similarity computation derived by protein sequence alignment and Gene Ontology (GO) semantic similarity measures within a list of proteins.

For small molecules, the Rcpi package could

Calculate 307 molecular descriptors (2D/3D), including constitutional, topological, geometrical, and electronic descriptors, etc.
Calculate more than ten types of molecular fingerprints, including FP4 keys, E-state fingerprints, MACCS keys, etc., and parallelized chemical similarity search.
Parallelized pairwise similarity computation derived by fingerprints and maximum common substructure search within a list of small molecules.

By combining various types of descriptors for drugs and proteins in different methods, interaction descriptors representing protein-protein or compound-protein interactions could be conveniently generated with Rcpi, including:

Two types of compound-protein interaction (CPI) descriptors
Three types of protein-protein interaction (PPI) descriptors

Several useful auxiliary utilities are also shipped with Rcpi:

Parallelized molecule and protein sequence retrieval from several online databases, like PubChem, ChEMBL, KEGG, DrugBank, UniProt, RCSB PDB, etc.
Loading molecules stored in SMILES/SDF files and loading protein sequences from FASTA/PDB files
Molecular file format conversion

The computed protein sequence descriptors, molecular descriptors/fingerprints, interaction descriptors and pairwise similarities are widely used in various research fields relevant to drug disvery, primarily bioinformatics, cheminformatics, proteochemometrics, and chemogenomics.

Contribute

To contribute to this project, please take a look at the Contributing Guidelines first. Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

foton263 / Rcpi