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- W2984312899 abstract "Abstract Nanoscale transport through nanopores and live-cell membranes plays a vital role in both key biological processes as well as biosensing and DNA sequencing. Active translocation of DNA through these nanopores usually needs enzyme assistance. Here we present a nanopore derived from truncated helicase E1 of bovine papillomavirus (BPV) with a lumen diameter of c.a. 1.3 nm. Cryogenic electron microscopy (cryo-EM) imaging and single channel recording confirm its insertion into planar lipid bilayer (BLM). The helicase nanopore in BLM allows the passive single-stranded DNA (ssDNA) transport and retains the helicase activity in vitro. Furthermore, we incorporate this helicase nanopore into the live cell membrane of HEK293T cells, and monitor the ssDNA delivery into the cell real-time at single molecule level. This type of nanopore is expected to provide an interesting tool to study the biophysics of biomotors in vitro, with potential applications in biosensing, drug delivery and real-time single cell analysis." @default.
- W2984312899 created "2019-11-22" @default.
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- W2984312899 date "2019-11-08" @default.
- W2984312899 modified "2023-10-16" @default.
- W2984312899 title "Active DNA unwinding and transport by a membrane-adapted helicase nanopore" @default.
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- W2984312899 doi "https://doi.org/10.1038/s41467-019-13047-y" @default.
- W2984312899 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6841704" @default.
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