6H0I
Solution structure of Melampsora larici-populina MlpP4.1
Summary for 6H0I
| Entry DOI | 10.2210/pdb6h0i/pdb |
| NMR Information | BMRB: 34298 |
| Descriptor | Secreted protein (1 entity in total) |
| Functional Keywords | cysteine knot protein, poplar rust, effector, unknown function |
| Biological source | Melampsora larici-populina 98AG31 |
| Total number of polymer chains | 1 |
| Total formula weight | 7978.62 |
| Authors | Tsan, P.,Petre, B.,Hecker, A.,Rouhier, N.,Duplessis, S. (deposition date: 2018-07-09, release date: 2018-08-22, Last modification date: 2023-06-14) |
| Primary citation | de Guillen, K.,Lorrain, C.,Tsan, P.,Barthe, P.,Petre, B.,Saveleva, N.,Rouhier, N.,Duplessis, S.,Padilla, A.,Hecker, A. Structural genomics applied to the rust fungus Melampsora larici-populina reveals two candidate effector proteins adopting cystine knot and NTF2-like protein folds. Sci Rep, 9:18084-18084, 2019 Cited by PubMed Abstract: Rust fungi are plant pathogens that secrete an arsenal of effector proteins interfering with plant functions and promoting parasitic infection. Effectors are often species-specific, evolve rapidly, and display low sequence similarities with known proteins. How rust fungal effectors function in host cells remains elusive, and biochemical and structural approaches have been scarcely used to tackle this question. In this study, we produced recombinant proteins of eleven candidate effectors of the leaf rust fungus Melampsora larici-populina in Escherichia coli. We successfully purified and solved the three-dimensional structure of two proteins, MLP124266 and MLP124017, using NMR spectroscopy. Although both MLP124266 and MLP124017 show no sequence similarity with known proteins, they exhibit structural similarities to knottins, which are disulfide-rich small proteins characterized by intricate disulfide bridges, and to nuclear transport factor 2-like proteins, which are molecular containers involved in a wide range of functions, respectively. Interestingly, such structural folds have not been reported so far in pathogen effectors, indicating that MLP124266 and MLP124017 may bear novel functions related to pathogenicity. Our findings show that sequence-unrelated effectors can adopt folds similar to known proteins, and encourage the use of biochemical and structural approaches to functionally characterize effector candidates. PubMed: 31792250DOI: 10.1038/s41598-019-53816-9 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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