DNA G-quadruplexes for native mass spectrometry in potassium: a database of validated structures in electrospray-compatible conditions.
DNA G-quadruplexes for native mass spectrometry in potassium: a database of validated structures in electrospray-compatible conditions.
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DOI:
10.1093/nar/gkab039
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发表时间:
2021-02-26
影响因子:
14.9
通讯作者:
Gabelica V
中科院分区:
文献类型:
--
作者:
Ghosh A;Largy E;Gabelica V
G-quadruplex DNA structures have become attractive drug targets, and native mass spectrometry can provide detailed characterization of drug binding stoichiometry and affinity, potentially at high throughput. However, the G-quadruplex DNA polymorphism poses problems for interpreting ligand screening assays. In order to establish standardized MS-based screening assays, we studied 28 sequences with documented NMR structures in (usually ∼100 mM) potassium, and report here their circular dichroism (CD), melting temperature (Tm), NMR spectra and electrospray mass spectra in 1 mM KCl/100 mM trimethylammonium acetate. Based on these results, we make a short-list of sequences that adopt the same structure in the MS assay as reported by NMR, and provide recommendations on using them for MS-based assays. We also built an R-based open-source application to build and consult a database, wherein further sequences can be incorporated in the future. The application handles automatically most of the data processing, and allows generating custom figures and reports. The database is included in the g4dbr package (https://github.com/EricLarG4/g4dbr) and can be explored online (https://ericlarg4.github.io/G4_database.html).
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DOI:
10.1007/s13361-018-2029-4
发表时间:
2018-11-01
影响因子:
3.2
作者:
Gabelica, Valerie;Livet, Sandrine;Rosu, Frederic
通讯作者:
Rosu, Frederic
影响因子:
15
作者:
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通讯作者:
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作者:
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通讯作者:
Salgado, Gilmar F.
影响因子:
4.8
作者:
Karsisiotis, Andreas Ioannis;O'Kane, Christopher;da Silva, Mateus Webba
通讯作者:
da Silva, Mateus Webba
影响因子:
14.9
作者:
Gros J;Rosu F;Amrane S;De Cian A;Gabelica V;Lacroix L;Mergny JL
通讯作者:
Mergny JL