Amplicon melting analysis with labeled primers: A closed-tube method for differentiating homozygotes and heterozygotes

From: Clinical Chemistry | Date: March 1, 2003| Author: | Copyright information

Background: Common methods for identification of DNA sequence variants use gel electrophoresis or column separation after PCR.

Methods: We developed a method for sequence variant analysis requiring only PCR and amplicon melting analysis. One of the PCR primers was fluorescently labeled. After PCR, the melting transition of the amplicon was monitored by high-resolution melting analysis. Different homozygotes were distinguished by amplicon melting temperature (T^sub m^). Heterozygotes were identified by low-temperature melting of heteroduplexes, which broadened the overall melting transition. ...

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