6k3b

Crystal structure of Lpg2147-Lpg2149 complex

spinqualitylabelsall models 6k3b, resolution 1.97Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6k3b is a 2 chain structure with sequence from Legionella pneumophila. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.974Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q5ZTL4_LEGPH Publication Abstract from PubMed Protein ubiquitination is one of the most prevalent post-translational modifications, controlling virtually every process in eukaryotic cells. Recently, the Legionella effector MavC was found to mediate a unique ubiquitination through transglutamination, linking ubiquitin (Ub) to UBE2N through Ub(Gln40) in a process that can be inhibited by another Legionella effector, Lpg2149. Here, we report the structures of MavC/UBE2N/Ub ternary complex, MavC/UBE2N-Ub (product) binary complex, and MavC/Lpg2149 binary complex. During the ubiquitination, the loop containing the modification site K92 of UBE2N undergoes marked conformational change, and Lpg2149 inhibits this ubiquitination through competing with Ub to bind MavC. Moreover, we found that MavC itself also exhibits weak deubiquitinase activity towards this non-canonical ubiquitination. Together, our study not only provides insights into the mechanism and inhibition of this transglutaminase-induced ubiquitination by MavC, but also sheds light on the future studies into UBE2N inhibition by this modification and deubiquitinases of this unique ubiquitination. Structural insights into the mechanism and inhibition of transglutaminase-induced ubiquitination by the Legionella effector MavC.,Mu Y, Wang Y, Huang Y, Li D, Han Y, Chang M, Fu J, Xie Y, Ren J, Wang H, Zhang Y, Luo ZQ, Feng Y Nat Commun. 2020 Apr 14;11(1):1774. doi: 10.1038/s41467-020-15645-7. PMID:32286321 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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