6IJF
Crystal structure of the type VI effector-immunity complex (Tae4-Tai4) from Agrobacterium tumefaciens
Summary for 6IJF
| Entry DOI | 10.2210/pdb6ijf/pdb |
| Descriptor | Tai4, Tae4, PENTAETHYLENE GLYCOL, ... (5 entities in total) |
| Functional Keywords | complex, antitoxin |
| Biological source | Agrobacterium tumefaciens (Rhizobium radiobacter) More |
| Total number of polymer chains | 4 |
| Total formula weight | 59540.63 |
| Authors | Fukuhara, S.,Nakane, T.,Yamashita, K.,Ishii, R.,Ishitani, R.,Nureki, O. (deposition date: 2018-10-09, release date: 2018-12-19, Last modification date: 2024-11-06) |
| Primary citation | Fukuhara, S.,Nakane, T.,Yamashita, K.,Ishii, R.,Ishitani, R.,Nureki, O. Crystal structure of the Agrobacterium tumefaciens type VI effector-immunity complex. Acta Crystallogr F Struct Biol Commun, 74:810-816, 2018 Cited by PubMed Abstract: The type VI secretion system (T6SS) comprises needle-shaped multisubunit complexes that play a role in the microbial defense systems of Gram-negative bacteria. Some Gram-negative bacteria harboring a T6SS deliver toxic effector proteins into the cytoplasm or periplasm of competing bacteria in order to lyse and kill them. To avoid self-cell disruption, these bacteria have cognate immunity proteins that inhibit their toxic effector proteins. T6SS amidase effector protein 4 (Tae4) and T6SS amidase immunity protein 4 (Tai4) are a representative of the toxic effector-immunity pairs of the T6SS. Here, the three-dimensional structures of Tai4 and the Tae4-Tai4 complex from Agrobacterium tumefaciens are reported at 1.55 and 1.9 Å resolution, respectively. A structural comparison with other Tae4-Tai4 homologs revealed similarities and differences in the catalytic and inhibitory mechanisms among the Tae4 and Tai4 family proteins. PubMed: 30511676DOI: 10.1107/S2053230X18016369 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.9 Å) |
Structure validation
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