3l3p | pdb_00003l3p

Crystal structure of the C-terminal domain of Shigella type III effector IpaH9.8, with a novel domain swap

spinqualitylabelsall models 3l3p, resolution 3.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3l3p is a 1 chain structure with sequence from Shigella flexneri. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 3ckd, 3cvr Gene: ipaH9.8 (Shigella flexneri) Activity: Ubiquitin--protein ligase, with EC number 6.3.2.19 Resources: FirstGlance, OCA, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed We show that the monomeric form of Shigella IpaH9.8 E3 ligase catalyses the ubiquitination of human U2AF35 in vitro, providing a molecular mechanism for the observed in vivo effect. We further discover that under non-reducing conditions IpaH9.8 undergoes a domain swap driven by the formation of a disulfide bridge involving the catalytic cysteine and that this dimer is unable to catalyse the ubiquitination of U2AF35. The crystal structure of the domain-swapped dimer is presented. The redox inactivation of IpaH9.8 could be a mechanism of regulating the activity of the IpaH9.8 E3 ligase in response to cell damage so that the host cell in which the bacteria resides is maintained in a benign state suitable for bacterial survival. A disulfide driven domain swap switches off the activity of Shigella IpaH9.8 E3 ligase.,Seyedarabi A, Sullivan JA, Sasakawa C, Pickersgill RW FEBS Lett. 2010 Oct 8;584(19):4163-8. Epub 2010 Sep 8. PMID:20831869 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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