Results 31 to 40 of about 39,529 (294)

G-Quadruplex Structures and G-Quadruplex-Interactive Compounds [PDF]

, 2011
G-quadruplexes are noncanonical secondary structures formed in DNA sequences containing consecutive runs of guanines. DNA G-quadruplexes have recently emerged as attractive cancer therapeutic targets. It has been shown that the 3' G-rich single-stranded overhangs of human telomeres can form G-quadruplex structures.
Raveendra I, Mathad, Danzhou, Yang
openaire   +2 more sources

Theoretical Assessment of the Ligand/Metal/Quadruplex Recognition in the Non-Canonical Nucleic Acids Structures

Molecules, 2023
Quadruplexes (GQs), peculiar DNA/RNA motifs concentrated in specific genomic regions, play a vital role in biological processes including telomere stability and, hence, represent promising targets for anticancer therapy. GQs are formed by folding guanine-
Nikoleta Kircheva, Stefan Dobrev, Vladislava Petkova, Snezhana Bakalova, Jose Kaneti, Silvia Angelova   +5 more
doaj   +1 more source

Activity of Human Apurinic/Apyrimidinic Endonuclease APE1 Toward Damaged DNA and Native RNA With Non-canonical Structures

Frontiers in Cell and Developmental Biology, 2020
The primary role of apurinic/apyrimidinic (AP) endonuclease APE1 in human cells is the cleavage of the sugar phosphate backbone 5′ to an AP site in DNA to produce a single-strand break with a 5′-deoxyribose phosphate and 3′-hydroxyl end groups.
Anastasia T. Davletgildeeva, Anastasia T. Davletgildeeva, Alexandra A. Kuznetsova, Olga S. Fedorova, Nikita A. Kuznetsov   +4 more
doaj   +1 more source

Why are G-quadruplexes good at preventing protein aggregation?

RNA Biology, 2023
Maintaining a healthy protein folding environment is essential for cellular function. Recently, we found that nucleic acids, G-quadruplexes in particular, are potent chaperones for preventing protein aggregation.
Theodore J. Litberg, Rajesh Kumar Reddy Sannapureddi, Zijue Huang, Ahyun Son, Bharathwaj Sathyamoorthy, Scott Horowitz   +5 more
doaj   +1 more source

Non-G Base Tetrads

Molecules, 2022
Tetrads (or quartets) are arrangements of four nucleobases commonly involved in the stability of four-stranded nucleic acids structures. Four-stranded or quadruplex structures have attracted enormous attention in the last few years, being the most ...
Núria Escaja, Bartomeu Mir, Miguel Garavís, Carlos González   +3 more
doaj   +1 more source

Structure and possible function of a G-quadruplex in the long terminal repeat of the proviral HIV-1 genome [PDF]

, 2016
open8The long terminal repeat (LTR) of the proviral human immunodeficiency virus (HIV)-1 genome is integral to virus transcription and host cell infection.

core   +1 more source

Transition Mutations in the hTERT Promoter Are Unrelated to Potential i-motif Formation in the C-Rich Strand

Biomolecules, 2023
Increased expression of the human telomere reverse transcriptase (hTERT) in tumors promotes tumor cell survival and diminishes the survival of patients.
James W. Conrad, Mark L. Sowers, Dianne Y. Yap, Ellie Cherryhomes, B. Montgomery Pettitt, Kamil Khanipov, Lawrence C. Sowers   +6 more
doaj   +1 more source

High-Resolution Three-Dimensional NMR Structure Of The KRAS Proto-Oncogene Promoter Reveals Key Features Of A G-Quadruplex Involved In Transcriptional Regulation [PDF]

, 2017
Non-canonical base pairing within guanine-rich DNA and RNA sequences can produce G-quartets, whose stacking leads to the formation of a G-quadruplex (G4).
Ivashchenko, S., Kerkour, A., Marquevielle, J., Mergny, J.-L., Salgado, G. F., Yatsunyk, Liliya A.   +5 more
core   +2 more sources

Conserved presence of G-quadruplex forming sequences in the Long Terminal Repeat Promoter of Lentiviruses [PDF]

, 2017
G-quadruplexes (G4s) are secondary structures of nucleic acids that epigenetically regulate cellular processes. In the human immunodeficiency lentivirus 1 (HIV-1), dynamic G4s are located in the unique viral LTR promoter.
A Ayouba, A Henderson, A Rambaut, AK Todd, AM Fleming, AN Lane, AR Haeusler, B Berkhout, B Zhou, BF Keele, D Piekna-Przybylska, D Qu, D Rhodes, D Sen, DJ Patel, E Tosoni, EA Raiber, F Barre-Sinoussi, F Benachenhou, F Bibollet-Ruche, F Heuverswyn Van, F Turrini, G Biffi, GE Crooks, IT Holder, J Felsenstein, J Norseen, J Qiu, J Song, J Yamaguchi, JE Clements, JF Fisette, JP Taylor, K Tamura, K Tluckova, KA Jones, LA Pereira, M Fry, M Metifiot, M Sala, M Scalabrin, MA Larkin, N Maizels, ND Perkins, NH Campbell, P Fratta, P Ivanov, P Murat, P Sket, R Perrone, R Perrone, R Perrone, R Perrone, RC Edgar, RC Gallo, RJ Gifford, S Amrane, S Artusi, S Artusi, S Balasubramanian, S Bhatia, S Broos, S Burge, S Pohlmann, SE Tong-Starksen, SR Wang, SR Wang, Y Wang   +67 more
core   +1 more source

Identification of G-quadruplex DNA/RNA binders: Structure-based virtual screening and biophysical characterization [PDF]

, 2017
Background Recent findings demonstrated that, in mammalian cells, telomere DNA (Tel) is transcribed into telomeric repeat-containing RNA (TERRA), which is involved in fundamental biological processes, thus representing a promising anticancer target. For
Alcaro, Stefano, Artese, Anna, Costa, Giosu\ue8, Distinto, Simona, Maccioni, Elias, Moraca, Federica, Nadai, Matteo, Ortuso, Francesco, Richter, Sara, Rocca, Roberta, Scalabrin, Matteo, Talarico, Carmine   +11 more
core   +1 more source