5m3c | pdb_00005m3c

Structure of the hybrid domain (GGDEF-EAL) of PA0575 from Pseudomonas aeruginosa PAO1 at 2.8 Ang. with GTP and Ca2+ bound to the active site of the GGDEF domain

spinqualitylabelsall models 5m3c, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5m3c is a 2 chain structure with sequence from Pseudomonas aeruginosa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Ligands: CA, GTP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q9I5W1_PSEAE Publication Abstract from PubMed Bis-(3'-5')-cyclic diguanylic acid (c-di-GMP) belongs to the class of cyclic dinucleotides, key carriers of cellular information in prokaryotic and eukaryotic signal transduction pathways. In bacteria, the intracellular levels of c-di-GMP and their complex physiological outputs are dynamically regulated by environmental and internal stimuli, which control the antagonistic activities of diguanylate cyclases (DGCs) and c-di-GMP specific phosphodiesterases (PDEs). Allostery is one of the major modulators of the c-di-GMP-dependent response. Both the c-di-GMP molecule and the proteins interacting with this second messenger are characterized by an extraordinary structural plasticity, which has to be taken into account when defining and possibly predicting c-di-GMP-related processes. Here, we report a structure-function relationship study on the catalytic portion of the PA0575 protein from Pseudomonas aeruginosa, bearing both putative DGC and PDE domains. The kinetic and structural studies indicate that the GGDEF-EAL portion is a GTP-dependent PDE. Moreover, the crystal structure confirms the high degree of conformational flexibility of this module. We combined structural analysis and protein engineering studies to propose the possible molecular mechanism guiding the nucleotide-dependent allosteric control of catalysis; we propose that the role exerted by GTP via the GGDEF domain is to allow the two EAL domains to form a dimer, the species competent to enter PDE catalysis. Insights into the GTP-dependent allosteric control of c-di-GMP hydrolysis from the crystal structure of PA0575 protein from Pseudomonas aeruginosa.,Mantoni F, Paiardini A, Brunotti P, D'Angelo C, Cervoni L, Paone A, Cappellacci L, Petrelli R, Ricciutelli M, Leoni L, Rampioni G, Arcovito A, Rinaldo S, Cutruzzola F, Giardina G FEBS J. 2018 Aug 14. doi: 10.1111/febs.14634. PMID:30106221 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Diguanylate cyclase

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