6s0q | pdb_00006s0q

Structure of the A2A adenosine receptor determined at SwissFEL using native-SAD at 4.57 keV from 50,000 diffraction patterns

spinqualitylabelsall models 6s0q, resolution 2.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6s0q is a 1 chain structure with sequence from Escherichia coli and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.65Å Ligands: CLR, OLA, OLB, OLC, ZMA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function AA2AR_HUMAN Receptor for adenosine. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase.C562_ECOLX Electron-transport protein of unknown function. Publication Abstract from PubMed Long-wavelength pulses from the Swiss X-ray free-electron laser (XFEL) have been used for de novo protein structure determination by native single-wavelength anomalous diffraction (native-SAD) phasing of serial femtosecond crystallography (SFX) data. In this work, sensitive anomalous data-quality indicators and model proteins were used to quantify improvements in native-SAD at XFELs such as utilization of longer wavelengths, careful experimental geometry optimization, and better post-refinement and partiality correction. Compared with studies using shorter wavelengths at other XFELs and older software versions, up to one order of magnitude reduction in the required number of indexed images for native-SAD was achieved, hence lowering sample consumption and beam-time requirements significantly. Improved data quality and higher anomalous signal facilitate so-far underutilized de novo structure determination of challenging proteins at XFELs. Improvements presented in this work can be used in other types of SFX experiments that require accurate measurements of weak signals, for example time-resolved studies. Advances in long-wavelength native phasing at X-ray free-electron lasers.,Nass K, Cheng R, Vera L, Mozzanica A, Redford S, Ozerov D, Basu S, James D, Knopp G, Cirelli C, Martiel I, Casadei C, Weinert T, Nogly P, Skopintsev P, Usov I, Leonarski F, Geng T, Rappas M, Dore AS, Cooke R, Nasrollahi Shirazi S, Dworkowski F, Sharpe M, Olieric N, Bacellar C, Bohinc R, Steinmetz MO, Schertler G, Abela R, Patthey L, Schmitt B, Hennig M, Standfuss J, Wang M, Milne CJ IUCrJ. 2020 Sep 9;7(Pt 6):965-975. doi: 10.1107/S2052252520011379. eCollection, 2020 Nov 1. PMID:33209311 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Adenosine A2A receptor 3D structures

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