[HTML][HTML] G-quadruplexes in human telomere: Structures, properties, and applications

Y Xu, M Komiyama - Molecules, 2023 - mdpi.com
G-quadruplexes, intricate four-stranded structures composed of G-tetrads formed by four
guanine bases, are prevalent in both DNA and RNA. Notably, these structures play pivotal …

G-quadruplexes and associated proteins in aging and Alzheimer's disease

MJ Vijay Kumar, R Morales, AS Tsvetkov - Frontiers in Aging, 2023 - frontiersin.org
Aging is a prominent risk factor for many neurodegenerative disorders, such as Alzheimer's
disease (AD). Alzheimer's disease is characterized by progressive cognitive decline …

Pirh2-dependent DNA damage in neurons induced by the G-quadruplex ligand pyridostatin

RD Escarcega, AA Patil, JF Moruno-Manchon… - Journal of Biological …, 2023 - ASBMB
Noncanonical base pairing between four guanines (G) within single-stranded G-rich
sequences leads to formation of а G-quartet. Self-stacking of G-quartets results in a …

The cellular functions and molecular mechanisms of G-quadruplex unwinding helicases in humans

Y Liu, X Zhu, K Wang, B Zhang, S Qiu - Frontiers in Molecular …, 2021 - frontiersin.org
G-quadruplexes (G4s) are stable non-canonical secondary structures formed by G-rich DNA
or RNA sequences. They play various regulatory roles in many biological processes. It is …

DDX21, a host restriction factor of FMDV IRES-dependent translation and replication

SW Abdullah, J Wu, Y Zhang, M Bai, J Guan, X Liu… - Viruses, 2021 - mdpi.com
In cells, the contributions of DEAD-box helicases (DDXs), without which cellular life is
impossible, are of utmost importance. The extremely diverse roles of the nucleolar helicase …

[HTML][HTML] The small nuclear ribonucleoprotein polypeptide A (SNRPA) binds to the G-quadruplex of the BAG-1 5′ UTR

F Bolduc, MA Turcotte, JP Perreault - Biochimie, 2020 - Elsevier
Abstract The protein “BCL-2-associated athanogene-1”(BAG-1), which exists in multiple
isoforms, promotes cancer cell survival and is overexpressed in many different cancers. As a …

The human RNA helicase DDX21 presents a dimerization interface necessary for helicase activity

MJ Marcaida, A Kauzlaric, A Duperrex, J Sülzle… - Iscience, 2020 - cell.com
Members of the DEAD-box helicase family are involved in all fundamental processes of RNA
metabolism, and as such, their malfunction is associated with various diseases. Currently …

2B and 3C Proteins of Senecavirus A Antagonize the Antiviral Activity of DDX21 via the Caspase-Dependent Degradation of DDX21

K Zhao, XR Guo, SF Liu, XN Liu, Y Han… - Frontiers in …, 2022 - frontiersin.org
Senecavirus A (SVA), also known as Seneca Valley virus, is a recently discovered
picornavirus that can cause swine vesicular disease, posing a great threat to the global …

DEAD-box RNA helicase 21 negatively regulates cytosolic RNA-mediated innate immune signaling

J Li, P Fang, Y Zhou, D Wang, L Fang… - Frontiers in …, 2022 - frontiersin.org
DEAD-box RNA helicase 21 (DDX21), also known as RHII/Gu, is an ATP-dependent RNA
helicase. In addition to playing a vital role in regulating cellular RNA splicing, transcription …

[HTML][HTML] Action and function of helicases on RNA G-quadruplexes

M Caterino, K Paeschke - Methods, 2022 - Elsevier
The nucleic acid structure called G-quadruplex (G4) is currently discussed to function in
nucleic acid-based mechanisms that influence several cellular processes. They can …