Applications for PNAs
Since DNA-probes have been utilized in the past rather effectively, one may like to ask, if there is enough justification for the use of PNAs in place of DNA oligonucleotides as molecular probes. Following are the reasons for using PNAs in place of DNA probes, atleast in specific situations :
(i) The greater association constants for PNA hybridization will increase the rate of recognition and allow the use of lower concentration of oligomer, thus improving throughput and reproducibility, while reducing the cost.
(ii) The enhanced affinity of PNA binding will allow recognition of binding sites at lower ionic strengths and higher temperatures.


