7jsy

Proteinase K soaked with I3C determined by MicroED from a single milled microcrystal

spinqualitylabelsall models 7jsy, resolution 1.78Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7jsy is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: I3C 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 A high throughout method for soaking ligands into protein microcrystals on TEM grids is presented. Every crystal on the grid is soaked simultaneously using only standard cryoelectron microscopy vitrification equipment. The method is demonstrated using proteinase K microcrystals soaked with the 5-amino-2,4,6-triodoisophthalic acid (I3C) magic triangle. A soaked microcrystal is milled to a thickness of approximately 200 nm using a focused ion beam, and MicroED data are collected. A high-resolution structure of the protein with four ligands at high occupancy is determined. Both the number of ligands bound and their occupancy is higher using on-grid soaking of microcrystals compared with much larger crystals treated similarly and investigated by X-ray crystallography. These results indicate that on-grid soaking ligands into microcrystals results in efficient uptake of ligands into protein microcrystals. Ligand Incorporation into Protein Microcrystals for MicroED by On-Grid Soaking.,Martynowycz MW, Gonen T Structure. 2020 Sep 28. pii: S0969-2126(20)30328-2. doi:, 10.1016/j.str.2020.09.003. PMID:33007196 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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