Synthesis and purification of peptide nucleic acids.
Peptide nucleic acids (PNAs) are DNA analogs in which the normal phosphodiester backbone is replaced by 2-aminoethyl glycine linkages. Hybridization of PNAs with RNA or DNA follows normal rules for Watson-Crick base pairing and occurs with high affinity. Thus, PNAs are a promising choice for applications that benefit from high-affinity hybridization. They are assembled using techniques adapted from peptide chemistry. Protocols are given for both automated and manual synthesis of PNAs as well as their purification. The advantages of each method are discussed, as are the different monomers and reagents that are required. Additionally, protocols are given for adding peptides to PNAs (which can enhance hybridization or cell uptake of the PNA) and for adding a biotin label.
Braasch
Dwaine A
DA
University of Texas Southwestern Medical Center at Dallas, Dallas, USA.
Nulf
Christopher J
CJ
Corey
David R
DR
D019921:Biotinylation; D007202:Indicators and Reagents; D008722:Methods; D009693:Nucleic Acid Hybridization; D020135:Peptide Nucleic Acids / Q000138:chemical synthesis* / Q000302:isolation & purification*; D010455:Peptides / Q000737:chemistry
D007202:Indicators and Reagents; D020135:Peptide Nucleic Acids; D010455:Peptides