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

Jack Alfred Bryant, Faye C Morris, Timothy J Knowles, Riyaz Maderbocus, Eva Heinz, Gabriela Boelter, Dema Alodaini, Adam Colyer, Peter J Wotherspoon, Kara A Staunton, Mark Jeeves, Douglas F Browning, Yanina R Sevastsyanovich, Timothy J Wells, Amanda E Rossiter, Vassiliy N Bavro, Pooja Sridhar, Douglas G Ward, Zhi-Soon Chong, Emily C A GoodallChristopher Icke, Alvin Teo, Shu-Sin Chng, David I Roper, Trevor Lithgow, Adam F Cunningham, Manuel Banzhaf, Michael Overduin, Ian R Henderson

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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, 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.

Original languageEnglish
Early online date14 Dec 2020
Publication statusPublished - Dec 2020


Dive into the research topics of 'Structure of dual-BON domain protein DolP identifies phospholipid binding as a new mechanism for protein localization'. Together they form a unique fingerprint.

Cite this