What are the advantages and disadvantages of TaqMan and SYBR Green I chemistries?
The main advantage of TaqMan chemistry is that a fluorescent signal is generated only when there is specific hybridization of the probe to the target sequence. No signal is generated from any non-specific amplification products that were formed during the reaction. Another advantage is that probes can be labeled with different, spectrally distinct reporter dyes, which allows the amplification of multiple target sequences within a single tube (multiplex Real-Time PCR). The main disadvantage of TaqMan chemistry is that design and synthesis of different dual-labeled probes is required for each target sequence, which increases assay setup and cost. The main advantage of SYBR Green I chemistry is that it only requires the design and synthesis of two PCR primers, which decreases assay setup and cost. Another advantage for SYBR Green I chemistry is the ability to perform melt curves. The main disadvantage of SYBR Green I chemistry is that since SYBR Green I binds to any dsDNA present during t
