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© Research
Publication : Biomolecular NMR assignments

Secondary structure and 1H, 15 N & 13C resonance assignments of the periplasmic domain of OutG, major pseudopilin from Dickeya dadantii type II secretion system.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Biomolecular NMR assignments - 28 Apr 2022

Jacobsen T, Dazzoni R, Renault MG, Bardiaux B, Nilges M, Shevchik V, Izadi-Pruneyre N,

Link to Pubmed [PMID] – 35482172

Link to DOI – 10.1007/s12104-022-10085-4

Biomol NMR Assign 2022 Apr; ():

The ability to interact and adapt to the surrounding environment is vital for bacteria that colonise various niches and organisms. One strategy developed by Gram-negative bacteria is to secrete exoprotein substrates via the type II secretion system (T2SS). The T2SS is a proteinaceous complex spanning the bacterial envelope that translocates folded proteins such as toxins and enzymes from the periplasm to the extracellular milieu. In the T2SS, a cytoplasmic ATPase elongates in the periplasm the pseudopilus, a non-covalent polymer composed of protein subunits named pseudopilins, and anchored in the inner membrane by a transmembrane helix. The pseudopilus polymerisation is coupled to the secretion of substrates. The T2SS of Dickeya dadantii secretes more than 15 substrates, essentially plant cell wall degrading enzymes. In D. dadantii, the major pseudopilin or the major subunit of the pseudopilus is called OutG. To better understand the mechanism of secretion of these numerous substrates via the pseudopilus, we have been studying the structure of OutG by NMR. Here, as the first part of this study, we report the 1H, 15N and 13C backbone and sidechain chemical shift assignment of the periplasmic domain of OutG and its NMR derived secondary structure.

https://pubmed.ncbi.nlm.nih.gov/35482172