Crystal structure of the Melampsora lini effector AvrP reveals insights into a possible nuclear function and recognition by the flax disease resistance protein P Xiaoxiao Zhang 1,2 , Nadya Farah 3 , Laura Rolston 3 , Daniel J. Ericsson 1,4 , Ann-Maree Catanzariti 3 , Maud Bernoux 2 , Thomas Ve 1,5 , Katerina Bendak 6 , Chunhong Chen 2 , Joel P. Mackay 6 , Gregory J. Lawrence 2 , Adrienne Hardham 3 , Jeffrey G. Ellis 2 , Simon J. Williams 1,3 , Peter N. Dodds 2 , David A. Jones 3 , and Bostjan Kobe 1,* 1. School of Chemistry and Molecular Biosciences, Australian Infectious Diseases Research Centre and Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia. 2. Commonwealth Scientific and Industrial Research Organisation Agriculture and Food, Canberra, ACT 2601, Australia 3. Division of Plant Sciences, Research School of Biology, Australian National University, Acton ACT 2601, Australia 4. Australian Synchrotron, 800 Blackburn Road, Clayton VIC 3168, Australia 5. Institute for Glycomics, Griffith University, Southport, QLD 4222, Australia. 6. School of Molecular Bioscience, University of Sydney, NSW 2006, Australia *Correspondence: Email: b.kobe@uq.edu.au Running title: Crystal structure of M. lini effector AvrP Word count: 6770 Figures: 7 (colour) Supplementary Information: 1 file (Figure S1-8, Table S1-3, Supplemental Experimental Procedures) This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as an ‘Accepted Article’, doi: 10.1111/mpp.12597 This article is protected by copyright. All rights reserved.