9emg

SmNuc1 nuclease from Stenotrophomonas maltophilia in complex with guanosine-5'-monophosphate as a product of c-di-GMP cleavage

spinqualitylabelsall models 9emg, resolution 1.15Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 9emg is a 2 chain structure with sequence from Stenotrophomonas maltophilia. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.148Å Ligands: 5GP, GOL, PEG, SO4, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Nucleases of the S1/P1 family have important applications in biotechnology and molecular biology. We have performed structural analyses of SmNuc1 nuclease from Stenotrophomonas maltophilia, including RNA cleavage product binding and mutagenesis in a newly discovered flexible Arg74-motif, involved in substrate binding and product release and likely contributing to the high catalytic rate. The Arg74Gln mutation shifts substrate preference towards RNA. Purine nucleotide binding differs compared to pyrimidines, confirming the plasticity of the active site. The enzyme-product interactions indicate a gradual, stepwise product release. The activity of SmNuc1 towards c-di-GMP in crystal resulted in a distinguished complex with the emerging product 5'-GMP. This enzyme from an opportunistic pathogen relies on specific architecture enabling high performance under broad conditions, attractive for biotechnologies. Substrate preference, RNA binding and active site versatility of Stenotrophomonas maltophilia nuclease SmNuc1, explained by a structural study.,Adamkova K, Trundova M, Koval T, Hustakova B, Kolenko P, Duskova J, Skalova T, Dohnalek J FEBS J. 2024 Oct 3. doi: 10.1111/febs.17265. PMID:39361520 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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