Formation and Stability of a Janus-Wedge Type of DNA Triplex
作者:Dongli Chen、Meena、Sunil K. Sharma、Larry W. McLaughlin
DOI:10.1021/ja038081x
日期:2004.1.1
A new type of DNA targeting with the formation of a Janus-Wedge (J-W) triple helix is described. The "wedge" residue (W) attached to a PNA backbone is designed to insert itself into double-stranded DNA and base pair with both Watson-Crick faces. To study the stability of such an assembly, we have examined the formation of the J-W triplex with dC8 - T8 target sequence. The use of this target sequence permits the study of this new helix form without competing Watson-Crick interactions between the two target residues. Studies indicate that the W strand binds to both target strands, with defined polarity and a stability (-15.2 kcal/mol) that is roughly the sum of the two independent duplex interactions.
[EN] BIFACIAL PEPTIDE NUCLEIC ACID PROBES AND METHODS OF USING THEREOF<br/>[FR] SONDES D'ACIDES NUCLÉIQUES PEPTIDIQUES BIFACIALES ET LEURS PROCÉDÉS D'UTILISATION
申请人:[en]OHIO STATE INNOVATION FOUNDATION
公开号:WO2024010977A1
公开(公告)日:2024-01-11
Disclosed herein are bifacial peptide nucleic acid probes. These probes can include a triplex hybrid forming moiety (e.g., a plurality of binding motifs disposed along a peptidyl backbone) conjugated to a prosthetic group. The triplex hybrid forming moiety can bind to a non-canonical base pairing site in a target nucleic acid via triplex hybridization. In this way, a variety of prosthetic groups (e.g., dyes, labels, reactive groups, etc.) can be selectively delivered to a target nucleic acid (e.g.,in vivo,in vitro, orex vivo).