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Structure of dual BON-domain protein DolP identifies phospholipid binding as a new mechanism for protein localisation

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Bryant, J.A, Morris, F.C, Knowles, T, Maderbocus, R, Heinz, Eva ORCID: https://orcid.org/0000-0003-4413-3756, Boelter, G, Alodaini, D, Coyler, A, Wotherspoon, P, Staunton, K, Jeeves, M, Browning, D, Sevastsyanovich, Y, Wells, T, Rossiter, A, Bavro, V, Sridhar, P, Ward, D, Chong, Z-S, Goodhall, E, Icke, C, Teo, A, Chng, S-S, Roper, D, Lithgow, T, Cunningham, A, Banzhaf, M, Overduin, M and Henderson, I (2020) 'Structure of dual BON-domain protein DolP identifies phospholipid binding as a new mechanism for protein localisation'. eLife, Vol 2020, Issue 9, e62614.

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Official URL: https://elifesciences.org/articles/62614

Abstract

The Gram-negative outer membrane envelops the bacterium and functions as a permeability barrier against antibiotics, detergents and environmental stresses. Some virulence factors serve to maintain the integrity of the outer membrane, 30 including DolP (formerly YraP) a protein of unresolved structure and function. Here we reveal DolP is a lipoprotein functionally conserved among Gram-negative bacteria and that loss of DolP increases membrane fluidity. We present the NMR solution structure for Escherichia coli DolP, which is composed of two BON domains that form an interconnected opposing pair. The C-terminal BON domain binds anionic phospholipids through an extensive membrane:protein interface. This interaction is essential for DolP function and is required for sub-cellular localization of the protein to the cell division site, providing evidence of subcellular localization of these phospholipids within the outer membrane. The structure of DolP provides a new target for developing therapies that disrupt the integrity of the bacterial cell
envelope.

Item Type:	Article
Subjects:	QU Biochemistry > QU 4 General works QW Microbiology and Immunology > Bacteria > QW 131 Gram-negative bacteria. QW Microbiology and Immunology > Bacteria > QW 138 Enterobacteriaceae
Faculty: Department:	Biological Sciences > Vector Biology Department
Digital Object Identifer (DOI):	https://doi.org/10.7554/eLife.62614
Depositing User:	Stacy Murtagh
Date Deposited:	23 Dec 2020 14:33
Last Modified:	14 Jan 2021 10:12
URI:	https://archive.lstmed.ac.uk/id/eprint/16398

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