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Cited by 185

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Phosphoinositide-mediated oligomerization of a defensin induces cell lysis

Open access
Poon, Ivan KH, Baxter, Amy A, Lay, Fung T, Mills, Grant D, Adda, Christopher G, Payne, Jennifer AE, Phan, Thanh Kha, Ryan, Gemma F, White, Julie A, Veneer, Prem K, van der Weerden, Nicole L, Anderson, Marilyn A, Kvansakul, Marc, Hulett, Mark D·2014·eLife

Abstract

Cationic antimicrobial peptides (CAPs) such as defensins are ubiquitously found innate immune molecules that often exhibit broad activity against microbial pathogens and mammalian tumor cells. Many CAPs act at the plasma membrane of cells leading to membrane destabilization and permeabilization. In this study, we describe a novel cell lysis mechanism for fungal and tumor cells by the plant defensin NaD1 that acts via direct binding to the plasma membrane phospholipid phosphatidylinositol 4,5-bisphosphate (PIP2). We determined the crystal structure of a NaD1:PIP2 complex, revealing a striking oligomeric arrangement comprising seven dimers of NaD1 that cooperatively bind the anionic headgroups of 14 PIP2 molecules through a unique ‘cationic grip’ configuration. Site-directed mutagenesis of NaD1 confirms that PIP2-mediated oligomerization is important for fungal and tumor cell permeabilization. These observations identify an innate recognition system by NaD1 for direct binding of PIP2 that permeabilizes cells via a novel membrane disrupting mechanism.

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Metadata

Authors
Poon, I. K., Baxter, A. A., Lay, F. T., Mills, G. D., Adda, C. G., Payne, J. A., Phan, T. K., Ryan, G. F., White, J. A., Veneer, P. K., van der Weerden, N. L., Anderson, M. A., Kvansakul, M., & Hulett, M. D.
Venue
eLife
Published
2014-04-01
Volume
3
Pages
e01808-e01808
ISSN
2050-084X (ISSN-L)
OpenAlex
W2109779237
Cited by
185
References
7
FWCI
14.63
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Phosphoinositide-mediated oligomerization of a defensin induces cell lysis. https://app.cochat.ai/papers/10.7554/elife.01808
The paper
Poon, I. K., Baxter, A. A., Lay, F. T., Mills, G. D., Adda, C. G., Payne, J. A., Phan, T. K., Ryan, G. F., White, J. A., Veneer, P. K., van der Weerden, N. L., Anderson, M. A., Kvansakul, M., & Hulett, M. D. (2014). Phosphoinositide-mediated oligomerization of a defensin induces cell lysis. eLife. https://doi.org/10.7554/elife.01808

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