DNA secondary structures: stability and function of G-quadruplex structures

ML Bochman, K Paeschke, VA Zakian - Nature Reviews Genetics, 2012 - nature.com
In addition to the canonical double helix, DNA can fold into various other inter-and
intramolecular secondary structures. Although many such structures were long thought to be …

G-quadruplexes in human promoters: A challenge for therapeutic applications

R Rigo, M Palumbo, C Sissi - Biochimica et Biophysica Acta (BBA)-General …, 2017 - Elsevier
Background G-rich sequences undergo unique structural equilibria to form G-quadruplexes
(G4) both in vitro and in cell systems. Several pathologies emerged to be directly related to …

The Dynamic Character of the BCL2 Promoter i-Motif Provides a Mechanism for Modulation of Gene Expression by Compounds That Bind Selectively to the …

S Kendrick, HJ Kang, MP Alam… - Journal of the …, 2014 - ACS Publications
It is generally accepted that DNA predominantly exists in duplex form in cells. However,
under torsional stress imposed by active transcription, DNA can assume nonduplex …

Insight into the Complexity of the i-Motif and G-Quadruplex DNA Structures Formed in the KRAS Promoter and Subsequent Drug-Induced Gene Repression

CE Kaiser, NA Van Ert, P Agrawal… - Journal of the …, 2017 - ACS Publications
Activating KRAS mutations frequently occur in pancreatic, colorectal, and lung
adenocarcinomas. While many attempts have been made to target oncogenic KRAS, no …

A dynamic G-quadruplex region regulates the HIV-1 long terminal repeat promoter

R Perrone, M Nadai, I Frasson, JA Poe… - Journal of medicinal …, 2013 - ACS Publications
G-Quadruplexes, noncanonical nucleic acid structures, act as silencers in the promoter
regions of human genes; putative G-quadruplex forming sequences are also present in …

Rational design of highly responsive pH sensors based on DNA i-motif

IV Nesterova, EE Nesterov - Journal of the American Chemical …, 2014 - ACS Publications
Availability of strategies for molecular biosensing over a finely adjustable dynamic range is
essential for understanding and controlling vital biological processes. Herein we report …

A Mechanosensor Mechanism Controls the G-Quadruplex/i-Motif Molecular Switch in the MYC Promoter NHE III1

C Sutherland, Y Cui, H Mao… - Journal of the American …, 2016 - ACS Publications
MYC is overexpressed in many different cancer types and is an intensively studied
oncogene because of its contributions to tumorigenesis. The regulation of MYC is complex …

Major G-quadruplex form of HIV-1 LTR reveals a (3+ 1) folding topology containing a stem-loop

E Butovskaya, B Heddi, B Bakalar… - Journal of the …, 2018 - ACS Publications
Nucleic acids can form noncanonical four-stranded structures called G-quadruplexes. G-
quadruplex-forming sequences are found in several genomes including human and viruses …

[HTML][HTML] Structure, properties, and biological relevance of the DNA and RNA G-quadruplexes: Overview 50 years after their discovery

NG Dolinnaya, AM Ogloblina, MG Yakubovskaya - Biochemistry (Moscow), 2016 - Springer
Abstract G-quadruplexes (G4s), which are known to have important roles in regulation of key
biological processes in both normal and pathological cells, are the most actively studied non …

Mutually exclusive formation of G-quadruplex and i-motif is a general phenomenon governed by steric hindrance in duplex DNA

Y Cui, D Kong, C Ghimire, C Xu, H Mao - Biochemistry, 2016 - ACS Publications
G-Quadruplex and i-motif are tetraplex structures that may form in opposite strands at the
same location of a duplex DNA. Recent discoveries have indicated that the two tetraplex …