2V9H

Solution Structure of an Escherichia coli YaeT tandem POTRA domain

Summary for 2V9H

• Entry DOI: 10.2210/pdb2v9h/pdb
• NMR Information: BMRB: 15247
• Descriptor: OUTER MEMBRANE PROTEIN ASSEMBLY FACTOR YAET (1 entity in total)
• Functional Keywords: yaet, membrane, potra domain, outer membrane, outer membrane protein folding, protein-binding, protein binding
• Biological source: ESCHERICHIA COLI
• Total number of polymer chains: 1
• Total formula weight: 17991.27

Authors

Knowles, T.J.,Jeeves, M.,Bobat, S.,Dancea, F.,Mcclelland, D.M.,Palmer, T.,Overduin, M.,Henderson, I.R. (deposition date: 2007-08-23, release date: 2008-05-06, Last modification date: 2024-05-15)

Primary citation

Knowles, T.J.,Jeeves, M.,Bobat, S.,Dancea, F.,Mcclelland, D.M.,Palmer, T.,Overduin, M.,Henderson, I.R.
Fold and Function of Polypeptide Transport-Associated Domains Responsible for Delivering Unfolded Proteins to Membranes.
Mol.Microbiol., 68:1216-, 2008

PubMed Abstract: Membranes of Gram-negative bacteria, mitochondria and chloroplasts receive and fold beta-barrel transmembrane proteins through the action of polypeptide transport-associated (POTRA) domains. In Escherichia coli, folding substrates are inserted into the outer membrane by the essential protein YaeT, a prototypic Omp85 protein. Here, the articulation between tandem POTRA domains in solution is defined by nuclear magnetic resonance (NMR) spectroscopy, indicating an unprecedented juxtaposition. The novel solution orientations of all five POTRA domains are revealed by small-angle X-ray scattering of the entire 46 kDa periplasmic region. NMR titration studies show that strands from YaeT's canonical folding substrate, PhoE, bind non-specifically along alternating sides of its mixed beta sheets, thus providing an ideal platform for helping to fold nascent outer-membrane proteins. Together, this provides the first structural model of how multiple POTRA domains recruit substrates from the periplasmic solution into the outer membrane.

PubMed: 18430136
DOI: 10.1111/J.1365-2958.2008.06225.X

Experimental method

SOLUTION NMR