TY - JOUR
T1 - Cell entry of a host targeting protein of oomycetes requires gp96
AU - Trusch, Franziska
AU - Loebach, Lars
AU - Wawra, Stephan
AU - Durward, Elaine
AU - Wuensch, Andreas
AU - Iberahim, Nurul Aqilah
AU - De Bruijn, Irene
AU - MacKenzie, Kevin Scott
AU - Willems, Ariane
AU - Toloczko-Grabarek, Aleksandra
AU - Dieguez-Uribeondo, Javier
AU - Rasmussen, Tim
AU - Schrader, Thomas
AU - Bayer, Peter
AU - Secombes, Christopher John
AU - Van West, Pieter
N1 - This work is supported by the [European Community’s] Seventh Framework Programme [FP7/2007–2013] under grant agreement no. [238550] (L.L., J.D.-U., C.J.S., P.v.W.); BBSRC [BBE007120/1, BB/J018333/1 and BB/G012075/1] (F.T., I.d.B., C.J.S., S.W., P.v.W.); Newton Global Partnership Award [BB/N005058/1] (F.T., P.v.W.), the University of Aberdeen (A.D.T., T.R., C.J.S., P.v.W.) and Deutsche Forschungsgemeinschaft [CRC1093] (P.B., T.S.). We would like to acknowledge the Ministry of Higher Education Malaysia for funding INA. We would like to thank Brian Haas for his bioinformatics support. We would like to acknowledge Neil Gow and Johannes van den Boom for critical reading of the manuscript. We would like to acknowledge Svetlana Rezinciuc for technical help with pH-studies.
PY - 2018/6/14
Y1 - 2018/6/14
N2 - The animal-pathogenic oomycete Saprolegnia parasitica causes serious losses in aquaculture by infecting and killing freshwater fish. Like plant-pathogenic oomycetes, S. parasitica employs similar infection structures and secretes effector proteins that translocate into host cells to manipulate the host. Here, we show that the host-targeting protein SpHtp3 enters fish cells in a pathogen-independent manner. This uptake process is guided by a gp96-like receptor and can be inhibited by supramolecular tweezers. The C-terminus of SpHtp3 (containing the amino acid sequence YKARK), and not the N-terminal RxLR motif, is responsible for the uptake into host cells. Following translocation, SpHtp3 is released from vesicles into the cytoplasm by another host-targeting protein where it degrades nucleic acids. The effector translocation mechanism described here, is potentially also relevant for other pathogen–host interactions as gp96 is found in both animals and plants.
AB - The animal-pathogenic oomycete Saprolegnia parasitica causes serious losses in aquaculture by infecting and killing freshwater fish. Like plant-pathogenic oomycetes, S. parasitica employs similar infection structures and secretes effector proteins that translocate into host cells to manipulate the host. Here, we show that the host-targeting protein SpHtp3 enters fish cells in a pathogen-independent manner. This uptake process is guided by a gp96-like receptor and can be inhibited by supramolecular tweezers. The C-terminus of SpHtp3 (containing the amino acid sequence YKARK), and not the N-terminal RxLR motif, is responsible for the uptake into host cells. Following translocation, SpHtp3 is released from vesicles into the cytoplasm by another host-targeting protein where it degrades nucleic acids. The effector translocation mechanism described here, is potentially also relevant for other pathogen–host interactions as gp96 is found in both animals and plants.
U2 - 10.1038/s41467-018-04796-3
DO - 10.1038/s41467-018-04796-3
M3 - Article
VL - 9
SP - 1
EP - 12
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 2347
ER -