2MPT
WW3 domain of Nedd4L in complex with its HECT domain PY motif
Summary for 2MPT
| Entry DOI | 10.2210/pdb2mpt/pdb |
| NMR Information | BMRB: 25000 |
| Descriptor | E3 ubiquitin-protein ligase NEDD4-like (2 entities in total) |
| Functional Keywords | ww, nedd4l, nedd4.2, hect, py, ww3, auto-ubiquitination, proteasomal degradation, ubiquitin ligase, ligase |
| Biological source | Homo sapiens (human) More |
| Cellular location | Cytoplasm : Q96PU5 Q96PU5 |
| Total number of polymer chains | 2 |
| Total formula weight | 7272.28 |
| Authors | Escobedo, A.,Macias, M.J.,Gomes, T.,Aragon, E.,Martin-Malpartida, P.,Ruiz, L. (deposition date: 2014-06-02, release date: 2014-10-22, Last modification date: 2024-10-30) |
| Primary citation | Escobedo, A.,Gomes, T.,Aragon, E.,Martin-Malpartida, P.,Ruiz, L.,Macias, M.J. Structural Basis of the Activation and Degradation Mechanisms of the E3 Ubiquitin Ligase Nedd4L. Structure, 22:1446-1457, 2014 Cited by PubMed Abstract: We investigated the mechanisms of activation and degradation of the E3 ubiquitin ligase Nedd4L combining the available biochemical information with complementary biophysical techniques. Using nuclear magnetic resonance spectroscopy, we identified that the C2 domain binds Ca(2+) and inositol 1,4,5-trisphosphate (IP3) using the same interface that is used to interact with the HECT domain. Thus, we propose that the transition from the closed to the active form is regulated by a competition of IP3 and Ca(2+) with the HECT domain for binding to the C2 domain. We performed relaxation experiments and molecular dynamic simulations to determine the flexibility of the HECT structure and observed that its conserved PY motif can become solvent-exposed when the unfolding process is initiated. The structure of the WW3 domain bound to the HECT-PY site reveals the details of this interaction, suggesting a possible auto-ubquitination mechanism using two molecules, a partially unfolded one and a fully functional Nedd4L counterpart. PubMed: 25295397DOI: 10.1016/j.str.2014.08.016 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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