4xwt | pdb_00004xwt

Crystal structure of RNase J complexed with UMP

spinqualitylabelsall models 4xwt, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4xwt is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: GOL, MN, U5P, ZN Related: 4xww Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Publication Abstract from PubMed RNase J is a conserved ribonuclease that belongs to the beta-CASP family of nucleases. It possesses both endo- and exo-ribonuclease activities, which play a key role in pre-rRNA maturation and mRNA decay. Here we report high-resolution crystal structures of Deinococcus radiodurans RNase J complexed with RNA or uridine 5'-monophosphate in the presence of manganese ions. Biochemical and structural studies revealed that RNase J uses zinc ions for two-metal-ion catalysis. One residue conserved among RNase J orthologues (motif B) forms specific electrostatic interactions with the scissile phosphate of the RNA that is critical for the catalysis and product stabilization. The additional manganese ion, which is coordinated by conserved residues at the dimer interface, is critical for RNase J dimerization and exonuclease activity. The structures may also shed light on the mechanism of RNase J exo- and endonucleolytic activity switch. Structural insights into catalysis and dimerization enhanced exonuclease activity of RNase J.,Zhao Y, Lu M, Zhang H, Hu J, Zhou C, Xu Q, Ul Hussain Shah AM, Xu H, Wang L, Hua Y Nucleic Acids Res. 2015 Jun 23;43(11):5550-9. doi: 10.1093/nar/gkv444. Epub 2015 , May 4. PMID:25940620 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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