Papers › Unbiased organism-agnostic and highly sensitive signal peptide predictor with deep...
Unbiased organism-agnostic and highly sensitive signal peptide predictor with deep protein language model
Junbo Shen, Qinze Yu, Shenyang Chen, Qingxiong Tan, Jingcheng Li, Yu Li
Signal peptide (SP) is a short peptide located in the N-terminus of proteins. It is essential to target and transfer transmembrane and secreted proteins to correct positions. Compared with traditional experimental methods to identify signal peptides, computational methods are faster and more efficient, which are more practical for analyzing thousands or even millions of protein sequences, especially for metagenomic data. Here we present Unbiased Organism-agnostic Signal Peptide Network (USPNet), a signal peptide classification and cleavage site prediction deep learning method that takes advantage of protein language models. We propose to apply label distribution-aware margin loss to handle data imbalance problems and use evolutionary information of protein to enrich representation and overcome species information dependence.
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