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Structural proteomics of a bacterial mega membrane protein complex: FtsH-HflK-HflC
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1-s2.0-S0141813024027284-main.pdf
Date
2024-06-01
Author
Akkulak, Hatice
İnce, H. Kerim
Goc, Gunce
Lebrilla, Carlito B.
Kabasakal, Burak V.
Özcan Kabasakal, Süreyya
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Recent advances in mass spectrometry (MS) yielding sensitive and accurate measurements along with developments in software tools have enabled the characterization of complex systems routinely. Thus, structural proteomics and cross-linking mass spectrometry (XL-MS) have become a useful method for structural modeling of protein complexes. Here, we utilized commonly used XL-MS software tools to elucidate the protein interactions within a membrane protein complex containing FtsH, HflK, and HflC, over-expressed in E. coli. The MS data were processed using MaxLynx, MeroX, MS Annika, xiSEARCH, and XlinkX software tools. The number of identified inter- and intra-protein cross-links varied among software. Each interaction was manually checked using the raw MS and MS/MS data and distance restraints to verify inter- and intra-protein cross-links. A total of 37 inter-protein and 148 intra-protein cross-links were determined in the FtsH-HflK-HflC complex. The 59 of them were new interactions on the lacking region of recently published structures. These newly identified interactions, when combined with molecular docking and structural modeling, present opportunities for further investigation. The results provide valuable information regarding the complex structure and function to decipher the intricate molecular mechanisms underlying the FtsH-HflK-HflC complex.
Subject Keywords
Cross-linking
,
Mass spectrometry
,
Membrane protein complexes
,
Structural proteomics
URI
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85192168620&origin=inward
https://hdl.handle.net/11511/109650
Journal
International Journal of Biological Macromolecules
DOI
https://doi.org/10.1016/j.ijbiomac.2024.131923
Collections
Department of Chemistry, Article
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BibTeX
H. Akkulak, H. K. İnce, G. Goc, C. B. Lebrilla, B. V. Kabasakal, and S. Özcan Kabasakal, “Structural proteomics of a bacterial mega membrane protein complex: FtsH-HflK-HflC,”
International Journal of Biological Macromolecules
, vol. 269, pp. 0–0, 2024, Accessed: 00, 2024. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85192168620&origin=inward.