期刊
BIOMATERIALS
卷 214, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2019.119222
关键词
Bacteriophage DNA packaging motor; T7 channel; Nanopore; Analysis of protein sequence; Detection of protein mutation; Biomotor
资金
- NIH [ROl EB012135]
- Oxford Nanopore Technologies Ltd.
Protein mutations can result in dysfunctional cell signaling pathways; therefore it is of significance to develop a robust platform for the detection of protein mutations. Here, we report that the channel of bacterial virus T7 DNA packaging motor is able to discriminate peptides containing a mixture of acidic (negatively charged) and basic (positively charged) amino acids. Peptides were differentiated based on their current signatures created by their unique charge compositions. In combination with protease digestion, peptides with the locational differences of single amino acid were also identified. The results suggest that the T7 motor channel has the potential for peptide differentiation, mutation verification, and analysis of protein sequence.
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