Z-DNA and Z-RNA in human disease
نویسندگان
چکیده
منابع مشابه
A Z-DNA binding domain present in the human editing enzyme, double-stranded RNA adenosine deaminase.
Editing of RNA changes the read-out of information from DNA by altering the nucleotide sequence of a transcript. One type of RNA editing found in all metazoans uses double-stranded RNA (dsRNA) as a substrate and results in the deamination of adenosine to give inosine, which is translated as guanosine. Editing thus allows variant proteins to be produced from a single pre-mRNA. A mechanism by whi...
متن کاملTransition between B-DNA and Z-DNA: free energy landscape for the B-Z junction propagation.
Canonical, right-handed B-DNA can be transformed into noncanonical, left-handed Z-DNA in vitro at high salt concentrations or in vivo under physiological conditions. The molecular mechanism of this drastic conformational transition is still unknown despite numerous studies. Inspired by the crystal structure of a B-Z junction and the previous zipper model, we show here, with the aid of molecular...
متن کاملStudying Z-DNA and B- to Z-DNA transitions using a cytosine analogue FRET-pair
Herein, we report on the use of a tricyclic cytosine FRET pair, incorporated into DNA with different base pair separations, to study Z-DNA and B-Z DNA junctions. With its position inside the DNA structure, the FRET pair responds to a B- to Z-DNA transition with a distinct change in FRET efficiency for each donor/acceptor configuration allowing reliable structural probing. Moreover, we show how ...
متن کاملResponse of semi-empirical and AB initio methods to angle strain and conjugation effects in (Z,Z,Z)-Cycloocta-1,3,5-triene
The results of MNDO, AM1 and PM3 semi-empirical calculations and HF/6-31G*, MP/6-31G*, MP2/6-311+G**, and B3LYP/6-311G** and QCISD/6-31G* ab initio methods for angle strain and conjugation effects in twist-boat, boat, and half-chair geometries of (Z,Z,Z)-cycloocta-1,3,5-triene indicate that all methods, except PM3, predict wrong ordering of the conformations.
متن کاملRadiolytic signature of Z-DNA.
Ionizing radiations induce various damages in DNA via the hydroxyl radical OH. generated by the radiolysis of water. We compare here the radiosensitivity of B- and Z-DNA, by using a Z-prone stretch included in a plasmid. In the supercoiled plasmid, the stretch is in the Z-form, whereas it is in the B-form when the plasmid is relaxed. Frank strand breaks (FSB) and alkali-revealed breaks (ARB) we...
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ژورنال
عنوان ژورنال: Communications Biology
سال: 2019
ISSN: 2399-3642
DOI: 10.1038/s42003-018-0237-x