A fundamental study of the PCR amplification of GC-rich DNA templates.
A fundamental study of the PCR amplification of GC-rich DNA templates.
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DOI:
10.1016/j.compbiolchem.2008.07.021
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发表时间:
2008-12
影响因子:
3.1
通讯作者:
Viljoen, H. J.
中科院分区:
文献类型:
--
作者:
Mamedov, T. G.;Pienaar, E.;Whitney, S. E.;TerMaat, J. R.;Carvill, G.;Goliath, R.;Subramanian, A.;Viljoen, H. J.
A theoretical analysis is presented with experimental confirmation to conclusively demonstrate the critical role that annealing plays in efficient PCR amplification of GC-rich templates. The analysis is focused on the annealing of primers at alternative binding sites (competitive annealing) and the main result is a quantitative expression of the efficiency (η) of annealing as a function of temperature (TA), annealing period tA) and template composition. The optimal efficiency lies in a narrow region of TA and tA for GC-rich templates and a much broader region for normal GC templates. To confirm the theoretical findings, the following genes have been PCR amplified from human cDNA template: ARX, and HBB (with 78.72% and 52.99% GC respectively). Theoretical results are in excellent agreement with the experimental findings. Optimum annealing times for GC-rich genes lie in the range of 3 to 6 seconds and depend on annealing temperature. Annealing times greater than 10 seconds yield smeared PCR amplified products. The non-GC-rich gene did not exhibit this sensitivity to annealing times. Theory and experimental results show that, shorter annealing times are not only sufficient but also necessary for efficient PCR amplification of GC-rich templates.
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影响因子:
2.9
作者:
REES, WA;YAGER, TD;VONHIPPEL, PH
通讯作者:
VONHIPPEL, PH
影响因子:
14.9
作者:
McDowell, DG;Burns, NA;Parkes, HC
通讯作者:
Parkes, HC
DOI:
10.1073/pnas.85.24.9436
发表时间:
1988-12-01
影响因子:
11.1
作者:
INNIS, MA;MYAMBO, KB;BROW, MAD
通讯作者:
BROW, MAD
DOI:
10.1073/pnas.94.7.3195
发表时间:
1997-04-01
影响因子:
11.1
作者:
Wilson, AG;Symons, JA;Duff, GW
通讯作者:
Duff, GW
影响因子:
14.9
作者:
Mytelka, DS;Chamberlin, MJ
通讯作者:
Chamberlin, MJ