By monitoring the modulation of an ionic current passing through a nanoreactor formed from a protein pore, the step-by-step growth of an individual polymer chain was monitored. The observation of polymer growth at the single-molecule level will be useful for studying the kinetics of chain growth or the movement of polymers under confinement. It might also be used to synthesize “molecular fishing lines” in situ, for applications in stochastic sensing.
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Shin et al. (2005) studied this question.
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