J 2022

Utilization of Fast Photochemical Oxidation of Proteins and Both Bottom-up and Top-down Mass Spectrometry for Structural Characterization of a Transcription Factor-dsDNA Complex

POLAK, Marek, Ghazaleh YASSAGHI, Daniel KAVAN, Frantisek FILANDR, Jan FIALA et. al.

Základní údaje

Originální název

Utilization of Fast Photochemical Oxidation of Proteins and Both Bottom-up and Top-down Mass Spectrometry for Structural Characterization of a Transcription Factor-dsDNA Complex

Autoři

POLAK, Marek, Ghazaleh YASSAGHI, Daniel KAVAN, Frantisek FILANDR, Jan FIALA, Zdenek KUKACKA, Petr HALADA, Dmitry S LOGINOV a Petr NOVAK

Vydání

Analytical chemistry, WASHINGTON, AMER CHEMICAL SOC, 2022, 0003-2700

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10406 Analytical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 7.400

Kód RIV

RIV/00216224:14740/22:00128777

Organizační jednotka

Středoevropský technologický institut

UT WoS

000758042700001

Klíčová slova anglicky

DNA; Mass spectrometry; Oxidation; Phase separation; Transcription

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 3. 4. 2023 17:37, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

A combination of covalent labeling techniques and mass spectrometry (MS) is currently a progressive approach for deriving insights related to the mapping of protein surfaces or protein-ligand interactions. In this study, we mapped an interaction interface between the DNA binding domain (DBD) of FOXO4 protein and the DNA binding element (DAF16) using fast photochemical oxidation of proteins (FPOP). Residues involved in protein-DNA interaction were identified using the bottom-up approach. To confirm the findings and avoid a misinterpretation of the obtained data, caused by possible multiple radical oxidations leading to the protein surface alteration and oxidation of deeply buried amino acid residues, a top-down approach was employed for the first time in FPOP analysis. An isolation of singly oxidized ions enabled their gas-phase separation from multiply oxidized species followed by CID and ECD fragmentation. Application of both fragmentation techniques allowed generation of complementary fragment sets, out of which the regions shielded in the presence of DNA were deduced. The findings obtained by bottom-up and top-down approaches were highly consistent. Finally, FPOP results were compared with those of the HDX study of the FOXO4-DBD center dot DAF16 complex. No contradictions were found between the methods. Moreover, their combination provides complementary information related to the structure and dynamics of the protein-DNA complex. Data are available via ProteomeXchange with identifier PXD027624.

Návaznosti

90127, velká výzkumná infrastruktura
Název: CIISB II