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PhD7Faster: predicting clones propagating faster from the Ph.D.-7 phage display peptide library
Beibei Ru1, Peter A C 't Hoen, Fulei Nie
1Center of Bioinformatics (COBI), Key Laboratory for NeuroInformation of Ministry of Education, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.
Journal of Bioinformatics and Computational Biology
|January 29, 2014
Summary
Phage display can identify unwanted clones that grow faster, not bind better. PhD7Faster uses machine learning to predict and remove these propagation-related target-unrelated peptides (PrTUPs), improving phage display library screening.
Area of Science:
- Biotechnology
- Molecular Biology
- Bioinformatics
Background:
- Phage display is a powerful technique for identifying specific peptide binders.
- The amplification step in phage display can introduce bias, favoring clones with faster growth over specific binding.
- This bias can lead to the selection of propagation-related target-unrelated peptides (PrTUPs), potentially misleading research.
Purpose of the Study:
- To develop a computational tool for predicting and removing PrTUPs from phage display libraries.
- To improve the accuracy and efficiency of identifying specific peptide binders using the Ph.D.-7 library.
Main Methods:
- Development of PhD7Faster, an ensemble predictor utilizing Support Vector Machine (SVM).
- Feature extraction using reduced dipeptide composition (ReDPC).
- Performance evaluation using 5-fold cross-validation, assessing accuracy (Acc) and Matthews correlation coefficient (MCC).
Main Results:
- PhD7Faster achieved an accuracy of 79.67% and an MCC of 0.595 in predicting clones with growth advantage.
- The SVM-based model outperformed several other representative machine learning algorithms.
- The predictor is specifically designed for the Ph.D.-7 phage display peptide library.
Conclusions:
- PhD7Faster can effectively assist biologists in excluding potential PrTUPs.
- The tool accelerates the discovery of specific binders by mitigating amplification bias in phage display.
- A web server for PhD7Faster is available for public use.
