路瑶, 胡正利, 应佚伦, 龙亿涛. Direct Single molecule Discrimination of Acetylene linked Deoxyribonucleoside Triphosphates with an Aerolysin Nanopore[J]. 2019, 38(2): 129-133.
路瑶, 胡正利, 应佚伦, 龙亿涛. Direct Single molecule Discrimination of Acetylene linked Deoxyribonucleoside Triphosphates with an Aerolysin Nanopore[J]. 2019, 38(2): 129-133.DOI: doi:10.3969/j.issn.1004-4957.2019.02.001.
Aerolysin could self assemble and oligomerize heptameric complex which insert into the lipid bilayer to form a nanopore.Due to the electrochemically confined effects
the aerolysin shows the high sensitivity in single molecule analysis of DNAs.Here
aerolysin was used to directly discriminate the single acetylene linked deoxyribonucleoside triphosphates from a single oligonucleotide without label or PCR operations.After modifying with acetylene derivative
a single oligonucleotide produced seven times longer blockade duration inside an aerolysin nanopore
increasing the blockage current amplitude by 7% and narrowing the current distribution by 44%.Therefore
the modification of the linear side chain of acetylene derivative could be further used to improve the temporal and spatial resolution in single DNA analysis via the aerolysin nanopore.