5w40

Crystal structure of PopP2 F318S in complex with IP6 and AcCoA

spinqualitylabelsall models 5w40, resolution 2.53Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5w40 is a 4 chain structure with sequence from Ralstonia solanacearum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.53Å Ligands: COA, IHP, SCY Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A0S4VB05_RALSL Publication Abstract from PubMed The Yersinia outer protein J (YopJ) family of bacterial effectors depends on a novel acetyltransferase domain to acetylate signalling proteins from plant and animal hosts. However, the underlying mechanism is unclear. Here, we report the crystal structures of PopP2, a YopJ effector produced by the plant pathogen Ralstonia solanacearum, in complex with inositol hexaphosphate (InsP6), acetyl-coenzyme A (AcCoA) and/or substrate Resistance to Ralstonia solanacearum 1 (RRS1-R)WRKY. PopP2 recognizes the WRKYGQK motif of RRS1-RWRKY to position a targeted lysine in the active site for acetylation. Importantly, the PopP2-RRS1-RWRKY association is allosterically regulated by InsP6 binding, suggesting a previously unidentified role of the eukaryote-specific cofactor in substrate interaction. Furthermore, we provide evidence for the reaction intermediate of PopP2-mediated acetylation, an acetyl-cysteine covalent adduct, lending direct support to the 'ping-pong'-like catalytic mechanism proposed for YopJ effectors. Our study provides critical mechanistic insights into the virulence activity of YopJ class of acetyltransferases. Mechanism of host substrate acetylation by a YopJ family effector.,Zhang ZM, Ma KW, Gao L, Hu Z, Schwizer S, Ma W, Song J Nat Plants. 2017 Jul 24;3:17115. doi: 10.1038/nplants.2017.115. PMID:28737762 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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