5kxv | pdb_00005kxv

Structure Proteinase K at 0.98 Angstroms

spinqualitylabelsall models 5kxv, resolution 0.98Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5kxv is a 1 chain structure with sequence from Engyodontium album. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, GOL, NO3 Related: 5kxu Activity: Peptidase K, with EC number 3.4.21.64 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [PRTK_ENGAL] Hydrolyzes keratin at aromatic and hydrophobic residues. Publication Abstract from PubMed Atomic resolution structures (beyond 1.20 A) at ambient temperature, which is usually hampered by the radiation damage in synchrotron X-ray crystallography (SRX), will add to our understanding of the structure-function relationships of enzymes. Serial femtosecond crystallography (SFX) has attracted surging interest by providing a route to bypass such challenges. Yet the progress on atomic resolution analysis with SFX has been rather slow. In this report, we describe the 1.20 A resolution structure of proteinase K using 13 keV photon energy. Hydrogen atoms, water molecules, and a number of alternative side-chain conformations have been resolved. The increase in the value of B-factor in SFX suggests that the residues and water molecules adjacent to active sites were flexible and exhibited dynamic motions at specific substrate-recognition sites. Atomic resolution structure of serine protease proteinase K at ambient temperature.,Masuda T, Suzuki M, Inoue S, Song C, Nakane T, Nango E, Tanaka R, Tono K, Joti Y, Kameshima T, Hatsui T, Yabashi M, Mikami B, Nureki O, Numata K, Iwata S, Sugahara M Sci Rep. 2017 Mar 31;7:45604. doi: 10.1038/srep45604. PMID:28361898 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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