Orsolya Barabas

Publications

2024

Telomeric transposons are pervasive in linear bacterial genomes.
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bioRxiv, ;
A novel mitochondrial pyruvate carrier inhibitor drives stem cell-like memory CAR T cell generation and enhances antitumor efficacy.
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Mol Ther Oncol, ; 32 (4): 200897

2023

First full views of a CRISPR-guided system for gene insertion.
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Nature, ; 613 (7945): 634-635

2022

Landscape of mobile genetic elements and their antibiotic resistance cargo in prokaryotic genomes.
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Nucleic Acids Res, ; 50 (6): 3155-3168
Engineered Sleeping Beauty transposase redirects transposon integration away from genes.
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Nucleic Acids Res, ; 50 (5): 2807-2825

2021

Sequence analysis of tyrosine recombinases allows annotation of mobile genetic elements in prokaryotic genomes.
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Mol Syst Biol, ; 17 (5): e9880
Towards Dissecting the Mechanism of Protein Phosphatase-1 Inhibition by Its C-Terminal Phosphorylation.
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Chembiochem, ; 22 (5): 834-838

2020

A single amino acid switch converts the Sleeping Beauty transposase into an efficient unidirectional excisionase with utility in stem cell reprogramming.
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Nucleic Acids Res, ; 48 (1): 316-331

2019

Jump ahead with a twist: DNA acrobatics drive transposition forward.
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Curr Opin Struct Biol, ; 59 : 168-177
A highly soluble Sleeping Beauty transposase improves control of gene insertion.
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Nat Biotechnol, ; 37 (12): 1502-1512
The USTC co-opts an ancient machinery to drive piRNA transcription in C. elegans.
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Genes Dev, ; 33 (1-2): 90-102

2018

Effects of stably incorporated iron on protein phosphatase-1 structure and activity.
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FEBS Lett, ; 592 (24): 4028-4038
Targeting IS608 transposon integration to highly specific sequences by structure-based transposon engineering.
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Nucleic Acids Res, ; 46 (8): 4152-4163
Transposase-DNA Complex Structures Reveal Mechanisms for Conjugative Transposition of Antibiotic Resistance.
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Cell, ; 173 (1): 208-220.e20
Conjugative transposition of the vancomycin resistance carrying Tn1549: enzymatic requirements and target site preferences.
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Mol Microbiol, ; 107 (5): 639-658

2017

Intermolecular base stacking mediates RNA-RNA interaction in a crystal structure of the RNA chaperone Hfq.
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Sci Rep, ; 7 (1): 9903

2016

Structural snapshots of Xer recombination reveal activation by synaptic complex remodeling and DNA bending.
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Elife, ; 5
Structural Determinants of Sleeping Beauty Transposase Activity.
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Mol Ther, ; 24 (8): 1369-1377
Sleeping Beauty transposase structure allows rational design of hyperactive variants for genetic engineering.
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Nat Commun, ; 7 : 11126

2014

An integrated approach for genome annotation of the eukaryotic thermophile Chaetomium thermophilum.
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Nucleic Acids Res, ; 42 (22): 13525-13533
Structure of an Escherichia coli Hfq:RNA complex at 0.97 Å resolution.
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Acta Crystallogr F Struct Biol Commun, ; 70 (Pt 11): 1492-1497

2013

Acquisition of an Archaea-like ribonuclease H domain by plant L1 retrotransposons supports modular evolution.
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Proc Natl Acad Sci U S A, ; 110 (50): 20140-20145
Catalytic mechanism of α-phosphate attack in dUTPase is revealed by X-ray crystallographic snapshots of distinct intermediates, 31P-NMR spectroscopy and reaction path modelling.
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Nucleic Acids Res, ; 41 (22): 10542-10555

2012

Crystal structure of the primary piRNA biogenesis factor Zucchini reveals similarity to the bacterial PLD endonuclease Nuc.
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RNA, ; 18 (12): 2128-2134

2010

DNA recognition and the precleavage state during single-stranded DNA transposition in D. radiodurans.
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EMBO J, ; 29 (22): 3840-3852

2009

Helicobacter Pylori's plasticity zones are novel transposable elements.
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PLoS One, ; 4 (9): e6859
Resetting the site: redirecting integration of an insertion sequence in a predictable way.
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Mol Cell, ; 34 (5): 612-619
Molecular shape and prominent role of beta-strand swapping in organization of dUTPase oligomers.
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FEBS Lett, ; 583 (5): 865-871

2008

Active site of mycobacterial dUTPase: structural characteristics and a built-in sensor.
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Biochem Biophys Res Commun, ; 373 (1): 8-13
Methylene substitution at the alpha-beta bridging position within the phosphate chain of dUDP profoundly perturbs ligand accommodation into the dUTPase active site.
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Proteins, ; 71 (1): 308-319
Revisiting the mechanism of the autoactivation of the complement protease C1r in the C1 complex: structure of the active catalytic region of C1r.
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Mol Immunol, ; 45 (6): 1752-1760
In vitro reconstitution of a single-stranded transposition mechanism of IS608.
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Mol Cell, ; 29 (3): 302-312
Mechanism of IS200/IS605 family DNA transposases: activation and transposon-directed target site selection.
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Cell, ; 132 (2): 208-220

2007

Active site closure facilitates juxtaposition of reactant atoms for initiation of catalysis by human dUTPase.
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FEBS Lett, ; 581 (24): 4783-4788
Flexible segments modulate co-folding of dUTPase and nucleocapsid proteins.
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Nucleic Acids Res, ; 35 (2): 495-505

2006

Crystallization and preliminary X-ray studies of dUTPase from Mason-Pfizer monkey retrovirus.
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Acta Crystallogr Sect F Struct Biol Cryst Commun, ; 62 (Pt 4): 399-401

2004

Structural insights into the catalytic mechanism of phosphate ester hydrolysis by dUTPase.
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J Biol Chem, ; 279 (41): 42907-42915
Altered active site flexibility and a structural metal-binding site in eukaryotic dUTPase: kinetic characterization, folding, and crystallographic studies of the homotrimeric Drosophila enzyme.
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J Biol Chem, ; 279 (17): 17932-17944

2003

dUTPase and nucleocapsid polypeptides of the Mason-Pfizer monkey virus form a fusion protein in the virion with homotrimeric organization and low catalytic efficiency.
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J Biol Chem, ; 278 (40): 38803-38812

2002

Synthesis and stereochemistry of dispiro substituted pyridazines: application of ellipticity-absorbance ratio spectra for proving enantiomeric relationship by HPLC-CD/UV detection.
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Chirality, ; 14 (5): 365-371