Design of peptides that bind in the minor groove of DNA at 5'-(A,T)G(A,T)C(A,T)-3' sequences by a dimeric side-by-side motif
摘要:
The designed peptides pyridine-2-carboxamide-netropsin (2-PyN) and 1-methylimidazole-2-carboxamide-netropsin (2-ImN) are crescent-shaped synthetic analogs of the natural products netropsin (N) and distamycin A (D). Footprinting experiments indicate that the peptides 2-PyN and 2-ImN bind specifically the 5 base pair sequence 5'-TGTCA-3'. Affinity cleaving data suggest that the complexes, 2-ImN.5'-TGTCA-3' and 2-PyN.5'-TGTCA-3', are composed of two equivalent orientations which disfavor a 1:1 model. The footprinting and affinity cleaving data are in accord with a 2:1 complex where a novel side-by-side antiparallel dimer binds in the minor groove of double-helical DNA.
[EN] METHODS AND COMPOUNDS FOR THE TREATMENT OF GENETIC DISEASE<br/>[FR] PROCÉDÉS ET COMPOSÉS POUR LE TRAITEMENT D'UNE MALADIE GÉNÉTIQUE
申请人:DESIGN THERAPEUTICS INC
公开号:WO2021158707A1
公开(公告)日:2021-08-12
The present disclosure relates to compounds and methods for modulating the expression of dmpk, and treating diseases and conditions in which dmpk plays an active role. The compound can be a transcription modulator molecule having a first terminus, a second terminus, and oligomeric backbone, wherein: a) the first terminus comprises a DNA-binding moiety capable of noncovalently binding to a nucleotide repeat sequence CAG or CTG; b) the second terminus comprises a protein-binding moiety binding to a regulatory molecule that modulates an expression of a gene comprising the nucleotide repeat sequence CAG or CTG; and c) the oligomeric backbone comprising a linker between the first terminus and the second terminus.
1 and 2, were designed and synthesized as convenient electrochemically active labelingreagents for nucleic acids, which may be used as dually labelingreagents of nucleic acids like Cy3 and Cy5 dyes. These reagents could react with the imino unit of thymine or guanine base on DNA or of uracil base on RNA under a basic buffer condition to yield a labeled product quantitatively in a short period of
Self-Assembling Ligands for Multivalent Nanoscale Heparin Binding
作者:Ana C. Rodrigo、Anna Barnard、James Cooper、David K. Smith
DOI:10.1002/anie.201100019
日期:2011.5.9
Supramolecular string of pearls: Polycationic ligands are designed to self‐assemble into spherical pseudo‐dendrimers that are capable of binding polyanionic heparin with affinities and binding modes similar to covalent nanostructures such as dendrimers and proteins (see picture; purple: heparin, red/blue: self‐assemblingligand). Binding of the ligands to heparin induces nanoscale organization of the
Quantifying the Effect of Surface Ligands on Dendron-DNA Interactions: Insights into Multivalency through a Combined Experimental and Theoretical Approach
作者:Simon P. Jones、Giovanni M. Pavan、Andrea Danani、Sabrina Pricl、David K. Smith
DOI:10.1002/chem.200902546
日期:2010.4.19
modest). In order to provide deeper insight into the experimental data, we performed a molecular dynamics simulation of the interactions between the dendrons and DNA. The results of these simulations demonstrated that, in general terms, the enthalpic contribution to binding was roughly proportional to the dendron surface charge, but that dendrons with DAP (and DAPMA) surface amines had significant entropic
A Bis(guanidinium)alcohol Attached to a Hairpin Polyamide: Synthesis, DNA Binding, and Plasmid Cleavage
作者:Daniela Wirth-Hamdoune、Stefan Ullrich、Ute Scheffer、Toni Radanović、Gerd Dürner、Michael W. Göbel
DOI:10.1002/cbic.201500566
日期:2016.3.15
phosphate diesters and to react by nucleophilic displacement has been attached to a DNA‐binding Dervan‐type hairpin polyamide. The resulting conjugate nicks plasmid DNA at concentrationsranging from micromolar to high nanomolar.