2020
Vicinal Diol-Tethered Nucleobases as Targets for DNA Redox Labeling with Osmate Complexes
HAVRANOVA-VIDLAKOVA, P.; M. KROMER; V. SYKOROVA; M. TREFULKA; Miroslav FOJTA et al.Základní údaje
Originální název
Vicinal Diol-Tethered Nucleobases as Targets for DNA Redox Labeling with Osmate Complexes
Autoři
HAVRANOVA-VIDLAKOVA, P.; M. KROMER; V. SYKOROVA; M. TREFULKA; Miroslav FOJTA; L. HAVRAN a M. HOCEK
Vydání
Chembiochem, WEINHEIM, WILEY-VCH, 2020, 1439-4227
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.164
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/20:00120577
Organizační jednotka
Středoevropský technologický institut
UT WoS
EID Scopus
Klíčová slova anglicky
DNA; electrochemistry; nucleotides; osmium; redox labeling
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 5. 5. 2022 15:41, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Six-valent osmium (osmate) complexes with nitrogenous ligands have previously been used for the modification and redox labeling of biomolecules involving vicinal diol moieties (typically, saccharides or RNA). In this work, aliphatic (3,4-dihydroxybutyl and 3,4-dihydroxybut-1-ynyl) or cyclic (6-oxo-6-(cis-3,4-dihydroxypyrrolidin-1-yl)hex-2-yn-1-yl, PDI) vicinal diols are attached to nucleobases to functionalize DNA for subsequent redox labeling with osmium(VI) complexes. The diol-linked 2 '-deoxyribonucleoside triphosphates were used for the polymerase synthesis of diol-linked DNA, which, upon treatment with K2OsO3 and bidentate nitrogen ligands, gave the desired Os-labeled DNA, which were characterized by means of the gel-shift assay and ESI-MS. Through ex situ square-wave voltammetry at a basal plane pyrolytic graphite electrode, the efficiency of modification/labeling of individual diols was evaluated. The results show that the cyclic cis-diol (PDI) was a better target for osmylation than that of the flexible aliphatic ones (alkyl- or alkynyl-linked). The osmate adduct-specific voltammetric signal obtained for Os-VI-treated DNA decorated with PDI showed good proportionality to the number of PDI per DNA molecule. The Os-VI reagents (unlike OsO4) do not attack nucleobases; thus offering specificity of modification on the introduced glycol targets.