An unnatural base pair system for efficient PCR amplification and functionalization of DNA molecules.
An unnatural base pair system for efficient PCR amplification and functionalization of DNA molecules.
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DOI:
10.1093/nar/gkn956
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发表时间:
2009-02
影响因子:
14.9
通讯作者:
Hirao I
中科院分区:
文献类型:
--
作者:
Kimoto M;Kawai R;Mitsui T;Yokoyama S;Hirao I
Toward the expansion of the genetic alphabet, we present an unnatural base pair system for efficient PCR amplification, enabling the site-specific incorporation of extra functional components into DNA. This system can be applied to conventional PCR protocols employing DNA templates containing unnatural bases, natural and unnatural base triphosphates, and a 3′→5′ exonuclease-proficient DNA polymerase. For highly faithful and efficient PCR amplification involving the unnatural base pairing, we identified the natural-base sequences surrounding the unnatural bases in DNA templates by an in vitro selection technique, using a DNA library containing the unnatural base. The system facilitates the site-specific incorporation of a variety of modified unnatural bases, linked with functional groups of interest, into amplified DNA. DNA fragments (0.15 amol) containing the unnatural base pair can be amplified 107-fold by 30 cycles of PCR, with <1% total mutation rate of the unnatural base pair site. Using the system, we demonstrated efficient PCR amplification and functionalization of DNA fragments for the extremely sensitive detection of zeptomol-scale target DNA molecules from mixtures with excess amounts (pmol scale) of foreign DNA species. This unnatural base pair system will be applicable to a wide range of DNA/RNA-based technologies.
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影响因子:
14.9
作者:
HENDRICKSON, ER;TRUBY, TMH;EBERSOLE, RC
通讯作者:
EBERSOLE, RC
影响因子:
15
作者:
TOR, Y;DERVAN, PB
通讯作者:
DERVAN, PB
影响因子:
15
作者:
Hirao, Ichiro;Mitsui, Tsuneo;Yokoyama, Shigeyuki
通讯作者:
Yokoyama, Shigeyuki
影响因子:
64.8
作者:
BAIN, JD;SWITZER, C;BENNER, SA
通讯作者:
BENNER, SA
影响因子:
15
作者:
Ogawa, AK;Wu, YQ;Romesberg, FE
通讯作者:
Romesberg, FE