6s45

Room temperature structure of the dark state of the LOV2 domain of phototropin-2 from Arabidopsis thaliana determined with a serial crystallography approach

spinqualitylabelsall models 6s45, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6s45 is a 1 chain structure with sequence from Arabidopsis thaliana. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.2Å Ligands: FMN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PHOT2_ARATH Protein kinase that acts as a blue light photoreceptor in a signal-transduction pathway for photo-induced movements. Mediates calcium spiking of extra- and intracellular origins in response to blue light. Involved in hypocotyl phototropism. Contributes to the chloroplast accumulation in low blue light and mediates their translocation (avoidance response) at high fluence. Regulates stomata opening and photomorphogenesis response of leaf tissue. Not involved in hypocotyl elongation inhibition, anthocyanin accumulation or cotyledon opening. Publication Abstract from PubMed The recent development of serial crystallography has popularized time-resolved crystallography as a technique to determine the structure of protein-reaction intermediate states. However, most approaches rely on the availability of thousands to millions of microcrystals. A method is reported here, using monochromatic synchrotron radiation, for the room-temperature collection, processing and merging of X-ray oscillation diffraction data from <100 samples in order to observe the build up of a photoreaction intermediate species. Using this method, we monitored with a time resolution of 63 ms how the population of a blue-light photoreceptor domain in a crystal progressively photoconverts from the dark to the light state. The series of resulting snapshots allows us to visualize in detail the gradual rearrangement of both the protein and chromophore during this process. Millisecond time-resolved serial oscillation crystallography of a blue-light photoreceptor at a synchrotron.,Aumonier S, Santoni G, Gotthard G, von Stetten D, Leonard GA, Royant A IUCrJ. 2020 Jun 24;7(Pt 4):728-736. doi: 10.1107/S2052252520007411. eCollection, 2020 Jul 1. PMID:32695419 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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