Hi,
I'm not sure if this is exactly what you are looking for, it requires
some synthesis, but maybe it will give you an idea:
Chemistry Letters
Vol. 37 (2008) , No. 6 p.584
Site-selective Termination of DNA Replication by Using a Caged Template
Keita Tanaka, Akinori Kuzuya and Makoto Komiyama
Barbara MacGregor
>>> is there a way how one can make the DNA polymerase (ordinary Taq
> should do, no proofreading activity is desired) stop within a sequence
> introduced by a synthetic primer? I thought of something like several
> sugar building blocks without any base attached or a modified base
> which is so bulky that the pol must stop and slip off.
> The modified position does not need to align to the parent DNA strand
> as it may be placed in a loop. It just should be able to be
> synthesized with standard phosphoramidite technology.
>> Many thanks for sharing your thoughts,
>> Wo
>
