Related Experiment Video
Updated: Jun 3, 2026

A Protocol for Computer-Based Protein Structure and Function Prediction
Published on: November 3, 2011
Outer membrane proteins can be simply identified using secondary structure element alignment
Ren-Xiang Yan1, Zhen Chen, Ziding Zhang
1State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, PR China.
Background:
Outer membrane proteins (OMPs) are frequently found in the outer membranes of gram-negative bacteria, mitochondria and chloroplasts and have been found to play diverse functional roles. Computational discrimination of OMPs from globular proteins and other types of membrane proteins is helpful to accelerate new genome annotation and drug discovery.
Results:
Based on the observation that almost all OMPs consist of antiparallel β-strands in a barrel shape and that their secondary structure arrangements differ from those of other types of proteins, we propose a simple method called SSEA-OMP to identify OMPs using secondary structure element alignment. Through intensive benchmark experiments, the proposed SSEA-OMP method is better than some well-established OMP detection methods.
Conclusions:
The major advantage of SSEA-OMP is its good prediction performance considering its simplicity. The web server implements the method is freely accessible at http://protein.cau.edu.cn/SSEA-OMP/index.html.
Insights
A new method, SSEA-OMP, identifies outer membrane proteins (OMPs) by analyzing their unique beta-barrel structures. This simple yet effective approach aids in accelerating genome annotation and drug discovery.
Area of Science:
- Biochemistry
- Structural Biology
- Bioinformatics
Background:
- Outer membrane proteins (OMPs) are crucial in gram-negative bacteria, mitochondria, and chloroplasts, performing diverse functions.
- Accurate identification of OMPs is vital for advancing genome annotation and drug discovery.
Purpose of the Study:
- To develop a computational method for distinguishing OMPs from other proteins.
- To leverage the distinct structural characteristics of OMPs for improved identification.
Main Methods:
- Proposed SSEA-OMP method based on secondary structure element alignment.
- Analysis of antiparallel beta-strand arrangements characteristic of OMPs.
- Benchmarking against established OMP detection techniques.
Main Results:
- SSEA-OMP effectively identifies OMPs based on their unique beta-barrel structure.
- The method demonstrates superior performance compared to existing OMP detection tools.
- Achieved high prediction accuracy due to the distinct secondary structure arrangements in OMPs.
Conclusions:
- SSEA-OMP offers a simple yet highly effective approach for OMP identification.
- The method's simplicity and strong predictive power are key advantages.
- A publicly accessible web server for SSEA-OMP is available at http://protein.cau.edu.cn/SSEA-OMP/index.html.
Related Concept Videos
Protein and Protein Structure
A protein's shape is critical to its function. For example, an enzyme can...
Protein Folding
Protein Folding
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Folding
Single-pass Transmembrane Proteins
Multi-pass Transmembrane Proteins and β-barrels
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as G-protein-linked receptors (GPCRs) and...

