Volume 31, Issue 9 pp. 1123-1132
Review

Molecular Similarity: Methods and Performance

Chaoqian Cai

Chaoqian Cai

School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Search for more papers by this author
Jiayu Gong

Jiayu Gong

School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Search for more papers by this author
Xiaofeng Liu

Xiaofeng Liu

State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Search for more papers by this author
Daqi Gao

Corresponding Author

Daqi Gao

School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Daqi Gao, School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Honglin Li, State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China, Tel.: 0086-021-64250213; Fax: 0086-021-64250213

Search for more papers by this author
Honglin Li

Corresponding Author

Honglin Li

State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Daqi Gao, School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Honglin Li, State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China, Tel.: 0086-021-64250213; Fax: 0086-021-64250213

Search for more papers by this author
First published: 16 September 2013
Citations: 14

Abstract

Molecular similarity has long been a hot topic, which has been evaluated and compared by various approaches and plays a significant role in protein-ligand and protein-protein interactions recognition. There are currently many types of molecular similarity evaluation methods with their own advantages and disadvantages. Molecular fingerprints are the most common methods for molecular similarity evaluation which only concern about rapid 2D common substructure retrieval but lack the ability to encode the information about 3D conformers. 3D molecular descriptor based methods bear the advantages of representing the structure information of a conformer, but the descriptors are not guaranteed to describe the molecules precisely. Molecular alignment based methods try to superimpose two molecules and evaluate the similarity using the optimal poses which are generally more precise than the molecular descriptor but require a time-consuming optimization process. Pharmacophore based methods only focus on the chemical features about a molecule and are not capable of dealing with the molecular shape similarity. In order to evaluate the performance of molecular similarity based screening, many kinds of metrics are available, e.g., visual representation, quantitative measurements and scaffold hopping ability measurements. Further applications of molecular similarity include construction of molecule interaction network or generation of diverse compounds library.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.