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Identification of Uptake Mechanism of Cell-Penetrating Peptides by their Polar Profile

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In the recent years, so-called cell-penetrating peptides (CPPs) have been in constant study due to its ability to penetrate cell membranes. CCPs are characterized by a length of less than 60 amino acids, its highly cationic nature and by a positive net charge at neutral pH. For the CPPs either an endocytic or non-endocytic uptake mechanism has been identified. This work presents the computational polarity index method that is able to predict the uptake mechanism of CPPs with an accuracy of 72% in a double-blind test. This was achieved by reading the peptide sequence and measuring the polarity as one single physico-chemical property. The method was verified by extracting all peptides from the CPPsite database (April 21, 2014) and its efficiency was tested with seven specialized databases of peptides and proteins.
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Keywords: Polarity index method; cell-penetrating peptides; endocytic pathway; non-endocytic pathway

Document Type: Research Article

Publication date: 01 November 2015

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  • Current Bioinformatics aims to publish all the latest and outstanding developments in bioinformatics. Each issue contains a series of timely, in-depth reviews written by leaders in the field, covering a wide range of the integration of biology with computer and information science.

    The journal focuses on reviews on advances in computational molecular/structural biology, encompassing areas such as computing in biomedicine and genomics, computational proteomics and systems biology, and metabolic pathway engineering. Developments in these fields have direct implications on key issues related to health care, medicine, genetic disorders, development of agricultural products, renewable energy, environmental protection, etc.

    Current Bioinformatics is an essential journal for all academic and industrial researchers who want expert knowledge on all major advances in bioinformatics.
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