6fjs | pdb_00006fjs

Proteinase~K SIRAS phased structure of room-temperature, serially collected synchrotron data

spinqualitylabelsall models 6fjs, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6fjs is a 1 chain structure with sequence from Parengyodontium album. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA Activity: Peptidase K, with EC number 3.4.21.64 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [PRTK_PARAQ] Hydrolyzes keratin at aromatic and hydrophobic residues. Publication Abstract from PubMed During the past few years, serial crystallography methods have undergone continuous development and serial data collection has become well established at high-intensity synchrotron-radiation beamlines and XFEL radiation sources. However, the application of experimental phasing to serial crystallography data has remained a challenging task owing to the inherent inaccuracy of the diffraction data. Here, a particularly gentle method for incorporating heavy atoms into micrometre-sized crystals utilizing lipidic cubic phase (LCP) as a carrier medium is reported. Soaking in LCP prior to data collection offers a new, efficient and gentle approach for preparing heavy-atom-derivative crystals directly before diffraction data collection using serial crystallography methods. This approach supports effective phasing by utilizing a reasonably low number of diffraction patterns. Using synchrotron radiation and exploiting the anomalous scattering signal of mercury for single isomorphous replacement with anomalous scattering (SIRAS) phasing resulted in high-quality electron-density maps that were sufficient for building a complete structural model of proteinase K at 1.9 A resolution using automatic model-building tools. De novo protein structure determination by heavy-atom soaking in lipidic cubic phase and SIRAS phasing using serial synchrotron crystallography.,Botha S, Baitan D, Jungnickel KEJ, Oberthur D, Schmidt C, Stern S, Wiedorn MO, Perbandt M, Chapman HN, Betzel C IUCrJ. 2018 Aug 8;5(Pt 5):524-530. doi: 10.1107/S2052252518009223. eCollection, 2018 Sep 1. PMID:30224955 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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