7mdi | pdb_00007mdi

Structure of the Neisseria gonorrhoeae ribonucleotide reductase in the inactive state

spinqualitylabelsall models 7mdi, resolution 4.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7mdi is a 8 chain structure with sequence from Neisseria gonorrhoeae FA 1090. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 4.3Å Ligands: CDP, DTP, FEO, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q5F8Z6_NEIG1 Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides.[RuleBase:RU003410] Publication Abstract from PubMed Ribonucleotide reductase (RNR) is an essential enzyme that converts ribonucleotides to deoxyribonucleotides and is a promising antibiotic target, but few RNRs have been structurally characterized. We present the use of the chameleon, a commercially-available piezoelectric cryogenic electron microscopy plunger, to address complex denaturation in the Neisseria gonorrhoeae class Ia RNR. Here, we characterize the extent of denaturation of the ring-shaped complex following grid preparation using a traditional plunger and using a chameleon with varying dispense-to-plunge times. We also characterize how dispense-to-plunge time influences the amount of protein sample required for grid preparation and preferred orientation of the sample. We demonstrate that the fastest dispense-to-plunge time of 54 ms is sufficient for generation of a data set that produces a high quality structure, and that a traditional plunging technique or slow chameleon dispense-to-plunge times generate data sets limited in resolution by complex denaturation. The 4.3 A resolution structure of Neisseria gonorrhoeae class Ia RNR in the inactive alpha4beta4 oligomeric state solved using the chameleon with a fast dispense-to-plunge time yields molecular information regarding similarities and differences to the well studied Escherichia coli class Ia RNR alpha4beta4 ring. Effects of chameleon dispense-to-plunge speed on particle concentration, complex formation, and final resolution: A case study using the Neisseria gonorrhoeae ribonucleotide reductase inactive complex.,Levitz TS, Brignole EJ, Fong I, Darrow MC, Drennan CL J Struct Biol. 2022 Mar;214(1):107825. doi: 10.1016/j.jsb.2021.107825. Epub 2021 , Dec 11. PMID:34906669 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribonucleotide reductase 3D structures

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