J 2016

Evolution of Telomeres in Schizosaccharomyces pombe and Its Possible Relationship to the Diversification of Telomere Binding Proteins

SEPSIOVA, Regina; Ivona NEČASOVÁ; Smaranda WILLCOX; Katarina PROCHAZKOVA; Peter GORILÁK et al.

Základní údaje

Originální název

Evolution of Telomeres in Schizosaccharomyces pombe and Its Possible Relationship to the Diversification of Telomere Binding Proteins

Autoři

SEPSIOVA, Regina; Ivona NEČASOVÁ; Smaranda WILLCOX; Katarina PROCHAZKOVA; Peter GORILÁK; Jozef NOSEK; Ctirad HOFR; Jack D. GRIFFITH a Ĺubomír TOMÁŠKA

Vydání

Plos one, San Francisco, Public Library of Science, 2016, 1932-6203

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10610 Biophysics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.806

Kód RIV

RIV/00216224:14740/16:00088004

Organizační jednotka

Středoevropský technologický institut

UT WoS

000374898500167

EID Scopus

2-s2.0-84964624139

Klíčová slova anglicky

MYB-DOMAIN PROTEIN; FISSION YEAST; HUMAN RAP1; USTILAGO-MAYDIS; TAY1 PROTEIN; DNA; TAZ1; TRF2; IDENTIFICATION; SEQUENCE

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 17. 12. 2019 14:09, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Telomeres of nuclear chromosomes are usually composed of an array of tandemly repeated sequences that are recognized by specific Myb domain containing DNA-binding proteins (telomere-binding proteins, TBPs). Whereas in many eukaryotes the length and sequence of the telomeric repeat is relatively conserved, telomeric sequences in various yeasts are highly variable. Schizosaccharomyces pombe provides an excellent model for investigation of co-evolution of telomeres and TBPs. First, telomeric repeats of S. pombe differ from the canonical mammalian type TTAGGG sequence. Second, S. pombe telomeres exhibit a high degree of intratelomeric heterogeneity. Third, S. pombe contains all types of known TBPs (Rap1p [a version unable to bind DNA], Tay1p/Teb1p, and Taz1p) that are employed by various yeast species to protect their telomeres. With the aim of reconstructing evolutionary paths leading to a separation of roles between Teb1p and Taz1p, we performed a comparative analysis of the DNA-binding properties of both proteins using combined qualitative and quantitative biochemical approaches. Visualization of DNA-protein complexes by electron microscopy revealed qualitative differences of binding of Teb1p and Taz1p to mammalian type and fission yeast telomeres. Fluorescence anisotropy analysis quantified the binding affinity of Teb1p and Taz1p to three different DNA substrates. Additionally, we carried out electrophoretic mobility shift assays using mammalian type telomeres and native substrates (telomeric repeats, histone-box sequences) as well as their mutated versions. We observed relative DNA sequence binding flexibility of Taz1p and higher binding stringency of Teb1p when both proteins were compared directly to each other. These properties may have driven replacement of Teb1p by Taz1p as the TBP in fission yeast.

Návaznosti

GAP205/12/0550, projekt VaV
Název: Dynamika vzniku shelterinového komplexu
Investor: Grantová agentura ČR, Dynamika vzniku shelterinového komplexu
LH13054, projekt VaV
Název: Studium dynamiky telomerových proteinových komplexů zajišťujících stabilitu genomu (Akronym: TeloProtGen)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Studium dynamiky telomerových proteinových komplexů zajišťujících stabilitu genomu