J 2014

DNA and RNA Quadruplex-Binding Proteins

BRÁZDA, Václav, Lucia HÁRONÍKOVÁ, JCC LIAO and Miroslav FOJTA

Basic information

Original name

DNA and RNA Quadruplex-Binding Proteins

Authors

BRÁZDA, Václav (203 Czech Republic, guarantor), Lucia HÁRONÍKOVÁ (703 Slovakia), JCC LIAO (36 Australia) and Miroslav FOJTA (203 Czech Republic, belonging to the institution)

Edition

International Journal of Molecular Sciences, Basel, Multidisciplinary Digital Publishing Institute, 2014, 1422-0067

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Genetics and molecular biology

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.862

RIV identification code

RIV/00216224:14740/14:00074408

Organization unit

Central European Institute of Technology

UT WoS

000348039400008

Keywords in English

DNA quadruplex; RNA quadruplex; telomere; protein-DNA binding; regulation

Tags

International impact, Reviewed
Změněno: 24/2/2015 11:48, Martina Prášilová

Abstract

V originále

Four-stranded DNA structures were structurally characterized in vitro by NMR, X-ray and Circular Dichroism spectroscopy in detail. Among the different types of quadruplexes (i-Motifs, minor groove quadruplexes, G-quadruplexes, etc.), the best described are G-quadruplexes which are featured by Hoogsteen base-paring. Sequences with the potential to form quadruplexes are widely present in genome of all organisms. They are found often in repetitive sequences such as telomeric ones, and also in promoter regions and 5' non-coding sequences. Recently, many proteins with binding affinity to G-quadruplexes have been identified. One of the initially portrayed G-rich regions, the human telomeric sequence (TTAGGG)(n), is recognized by many proteins which can modulate telomerase activity. Sequences with the potential to form G-quadruplexes are often located in promoter regions of various oncogenes. The NHE III1 region of the c-MYC promoter has been shown to interact with nucleolin protein as well as other G-quadruplex-binding proteins. A number of G-rich sequences are also present in promoter region of estrogen receptor alpha. In addition to DNA quadruplexes, RNA quadruplexes, which are critical in translational regulation, have also been predicted and observed. For example, the RNA quadruplex formation in telomere-repeat-containing RNA is involved in interaction with TRF2 (telomere repeat binding factor 2) and plays key role in telomere regulation. All these fundamental examples suggest the importance of quadruplex structures in cell processes and their understanding may provide better insight into aging and disease development.

Links

GBP206/12/G151, research and development project
Name: Centrum nových přístupů k bioanalýze a molekulární diagnostice